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2,181 results on '"D'Agostini, G."'

1. Direct tests of T, CP, CPT symmetries in transitions of neutral K mesons with the KLOE experiment

Author

Babusci, D., Berłowski, M., Bloise, C., Bossi, F., Branchini, P., Cao, B., Ceradini, F., Ciambrone, P., Curciarello, F., Czerwiński, E., D'Agostini, G., D'Amico, R., Danè, E., De Leo, V., De Lucia, E., De Santis, A., De Simone, P., Di Domenico, A., Diociaiuti, E., Domenici, D., D'Uffizi, A., Fantini, G., Gajos, A., Gamrat, S., Gauzzi, P., Giovannella, S., Graziani, E., Kang, X., Kupść, A., Mandaglio, G., Martini, M., Miscetti, S., Moskal, P., Passeri, A., del Rio, E. Pérez, Schioppa, M., Selce, A., Silarski, M., Sirghi, F., Solodov, E. P., Wiślicki, W., Wolke, M., and Bernabéu, J.

Subjects
High Energy Physics - Experiment
Abstract

Tests of the T, CP and CPT symmetries in the neutral kaon system are performed by the direct comparison of the probabilities of a kaon transition process to its symmetry-conjugate. The exchange of in and out states required for a genuine test involving an anti-unitary transformation implied by time-reversal is implemented exploiting the entanglement of $K^0\bar{K}{}^0$ pairs produced at a $\phi$-factory. A data sample collected by the KLOE experiment at DA$\Phi$NE corresponding to an integrated luminosity of about 1.7 fb$^{-1}$ is analysed to study the $\Delta$t distributions of the $\phi\to K_{S}K_{L}\to \pi^+\pi^- \: \pi^{\pm}e^{\mp}\nu$ and $\phi\to K_{S}K_{L}\to \pi^{\pm}e^{\mp}\nu \: 3\pi^0$ processes, with $\Delta$t the difference of the kaon decay times. A comparison of the measured $\Delta$t distributions in the asymptotic region $\Delta t \gg \tau_{S}$ allows to test for the first time T and CPT symmetries in kaon transitions with a precision of few percent, and to observe CP violation with this novel method., Comment: 26 pages, 10 figures. Minor style corrections applied before journal submission. Sumbmitted to Physics Letters B

Published
2022

2. Measurement of the $K_S \to \pi e \nu$ branching fraction with the KLOE experiment

Author

Babusci, D., Berlowski, M., Bloise, C., Bossi, F., Branchini, P., Cao, B., Ceradini, F., Ciambrone, P., Curciarello, F., Czerwiński, E., D'Agostini, G., D'Amico, R., Danè, E., De Leo, V., De Lucia, E., De Santis, A., De Simone, P., Di Cicco, A., Di Domenico, A., Diociaiuti, E., Domenici, D., D'Uffizi, A., Fantini, G., Gajos, A., Gamrat, S., Gauzzi, P., Giovannella, S., Graziani, E., Kang, X., Kupsc, A., Mandaglio, G., Martini, M., Miscetti, S., Moskal, P., Passeri, A., del Rio, E. Perez, Schioppa, M., Selce, A., Silarski, M., Sirghi, F., Solodov, E. P., Wiślicki, W., and Wolke, M.

Subjects
High Energy Physics - Experiment
Abstract

The branching fraction for the decay $K_S \to \pi e \nu$ has been measured with a sample of 300 million $K_S$ mesons produced in $\phi \to K_L K_S$ decays recorded by the KLOE experiment at the DA$\Phi$NE $e^+e^-$ collider. Signal decays are selected by a boosted decision tree built with kinematic variables and time-of-flight measurements. Data control samples of $K_L \to \pi e \nu$ decays are used to evaluate signal selection efficiencies. A fit to the reconstructed electron mass distribution finds 49647$\pm$316 signal events. Normalising to the $K_S \to \pi^+\pi^-$ decay events the result for the branching fraction is $\mathcal{B}(K_S \to \pi e \nu) = (7.211 \pm 0.046_{\rm stat} \pm 0.052_{\rm syst}) \times10^{-4}$. The combination with our previous measurement gives $\mathcal{B}(K_S \to \pi e \nu) = (7.153 \pm 0.037_{\rm stat} \pm 0.043_{\rm syst}) \times10^{-4}$. From this value we derive $f_+(0)|V_{us}| = 0.2170 \pm 0.009$., Comment: arXiv admin note: substantial text overlap with arXiv:1912.05990

Published
2022

3. Precision tests of Quantum Mechanics and CPT symmetry with entangled neutral kaons at KLOE

Author

Babusci, D., Berlowski, M., Bloise, C., Bossi, F., Branchini, P., Budano, A., Cao, B., Ceradini, F., Ciambrone, P., Curciarello, F., Czerwiński, E., D'Agostini, G., D'Amico, R., Danè, E., De Leo, V., De Lucia, E., De Santis, A., De Simone, P., Di Cicco, A., Di Domenico, A., Diociaiuti, E., Domenici, D., D'Uffizi, A., Fantini, A., Fantini, G., Fermani, P., Fiore, S., Gajos, A., Gauzzi, P., Giovannella, S., Graziani, E., Ivanov, V. L., Johansson, T., Kang, X., Kisielewska-Kamińska, D., Kozyrev, E. A., Krzemien, W., Kupsc, A., Lukin, P. A., Mandaglio, G., Martini, M., Messi, R., Miscetti, S., Moricciani, D., Moskal, P., Passeri, A., Patera, V., del Rio, E. Perez, Santangelo, P., Schioppa, M., Selce, A., Silarski, M., Sirghi, F., Solodov, E. P., Tortora, L., Venanzoni, G., Wiślicki, W., and Wolke, M.

Subjects
High Energy Physics - Experiment
Abstract

The quantum interference between the decays of entangled neutral kaons is studied in the process $\phi\rightarrow K_S K_L \rightarrow\pi^+\pi^-\pi^+\pi^-$, which exhibits the characteristic Einstein--Podolsky--Rosen correlations that prevent both kaons to decay into $\pi^+\pi^-$ at the same time. This constitutes a very powerful tool for testing at the utmost precision the quantum coherence of the entangled kaon pair state, and to search for tiny decoherence and CPT violation effects, which may be justified in a quantum gravity framework. The analysed data sample was collected with the KLOE detector at DA$\Phi$NE, the Frascati $\phi$-factory, and corresponds to an integrated luminosity of about 1.7 fb$^{-1}$, i.e. to about $1.7 \times 10^9$ $\phi\rightarrow K_S K_L$ decays produced. From the fit of the observed $\Delta t$ distribution, being $\Delta t$ the difference of the kaon decay times, the decoherence and CPT violation parameters of various phenomenological models are measured with a largely improved accuracy with respect to previous analyses. The results are consistent with no deviation from quantum mechanics and CPT symmetry, while for some parameters the precision reaches the interesting level at which -- in the most optimistic scenarios -- quantum gravity effects might show up. They provide the most stringent limits up to date on the considered models., Comment: 17 pages 6 figures

Published
2021

4. Cancellation of the central singularity of the Schwarzschild solution with natural mass inversion process

Author

Petit, J. P. and D'Agostini, G.

Subjects
General Relativity and Quantum Cosmology
Abstract

We reconsider the classical Schwarzschild solution in the context of a Janus cosmological model. We show that the central singularity can be eliminated through a simple coordinate change and that the subsequent transit from one fold to the other is accompanied by mass inversion. In such scenario matter swallowed by black holes could be ejected as invisible negative mass and dispersed in space., Comment: 11 pages , 12 figures

Published
2021
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5. Upper limit on the $\eta\to\pi^{+}\pi^{-}$ branching fraction with the KLOE experiment

Author

Babusci, D., Berlowski, M., Bloise, C., Bossi, F., Branchini, P., Budano, A., Cao, B., Ceradini, F., Ciambrone, P., Curciarello, F., Czerwiński, E., D'Agostini, G., Danè, E., De Leo, V., De Lucia, E., De Santis, A., De Simone, P., Di Cicco, A., Di Domenico, A., Domenici, D., D'Uffizi, A., Fantini, A., Fermani, P., Fiore, S., Gajos, A., Gauzzi, P., Giovannella, S., Graziani, E., Ivanov, V. L., Johansson, T., Kang, X., Kisielewska-Kamińska, D., Kozyrev, E. A., Krzemien, W., Kupsc, A., Lukin, P. A., Mandaglio, G., Martini, M., Messi, R., Miscetti, S., Moricciani, D., Moskal, P., Parzych, S., Passeri, A., Patera, V., del Rio, E. Perez, Santangelo, P., Schioppa, M., Selce, A., Silarski, M., Sirghi, F., Solodov, E. P., Tortora, L., Venanzoni, G., Wiślicki, W., and Wolke, M.

Subjects
High Energy Physics - Experiment
Abstract

Based on an integrated luminosity of 1.61 fb$^{-1}$ $e^+e^-$ collision data collected with the KLOE detector at DA$\Phi$NE, the Frascati $\phi$-factory, a search for the $P$- and $CP$-violating decay $\eta\to\pi^{+}\pi^{-}$ has been performed. Radiative $\phi\to\eta\gamma$ decay is exploited to access the $\eta$ mesons. No signal is observed in the $\pi^{+}\pi^{-}$ invariant mass spectrum, and the upper limit on the branching fraction at 90\% confidence level is determined to be ${\mathcal B}(\eta\to\pi^{+}\pi^{-})<4.9\times10^{-6}$, which is approximately three times smaller than the previous KLOE result. From the combination of these two measurements we get ${\mathcal B}(\eta\to\pi^{+}\pi^{-}) < 4.4\times10^{-6}$ at 90\% confidence level., Comment: 11 pages, 3 figures

Published
2020
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6. Improved calorimetric particle identification in NA62 using machine learning techniques

Author

Cortina Gil, E., Kleimenova, A., Minucci, E., Padolski, S., Petrov, P., Shaikhiev, A., Volpe, R., Fedorko, W., Numao, T., Petrov, Y., Velghe, B., Wong, V. W. S., Yu, M., Bryman, D., Fu, J., Hives, Z., Husek, T., Jerhot, J., Kampf, K., Zamkovsky, M., De Martino, B., Perrin-Terrin, M., Akmete, A. T., Aliberti, R., Khoriauli, G., Kunze, J., Lomidze, D., Peruzzo, L., Vormstein, M., Wanke, R., Dalpiaz, P., Fiorini, M., Mazzolari, A., Neri, I., Norton, A., Petrucci, F., Soldani, M., Wahl, H., Bandiera, L., Cotta Ramusino, A., Gianoli, A., Romagnoni, M., Sytov, A., Iacopini, E., Latino, G., Lenti, M., Lo Chiatto, P., Panichi, I., Parenti, A., Bizzeti, A., Bucci, F., Antonelli, A., Georgiev, G., Kozhuharov, V., Lanfranchi, G., Martellotti, S., Moulson, M., Spadaro, T., Tinti, G., Ambrosino, F., Capussela, T., Corvino, M., D’Errico, M., Di Filippo, D., Fiorenza, R., Giordano, R., Massarotti, P., Mirra, M., Napolitano, M., Rosa, I., Saracino, G., Anzivino, G., Brizioli, F., Imbergamo, E., Lollini, R., Piandani, R., Santoni, C., Barbanera, M., Cenci, P., Checcucci, B., Lubrano, P., Lupi, M., Pepe, M., Piccini, M., Costantini, F., Di Lella, L., Doble, N., Giorgi, M., Giudici, S., Lamanna, G., Lari, E., Pedreschi, E., Sozzi, M., Cerri, C., Fantechi, R., Pontisso, L., Spinella, F., Mannelli, I., D’Agostini, G., Raggi, M., Biagioni, A., Cretaro, P., Frezza, O., Leonardi, E., Lonardo, A., Turisini, M., Valente, P., Vicini, P., Ammendola, R., Bonaiuto, V., Fucci, A., Salamon, A., Sargeni, F., Arcidiacono, R., Bloch-Devaux, B., Boretto, M., Menichetti, E., Migliore, E., Soldi, D., Biino, C., Filippi, A., Marchetto, F., Briano Olvera, A., Engelfried, J., Estrada-Tristan, N., Reyes Santos, M. A., Boboc, P., Bragadireanu, A. M., Ghinescu, S. A., Hutanu, O. E., Bician, L., Blazek, T., Cerny, V., Kucerova, Z., Bernhard, J., Ceccucci, A., Ceoletta, M., Danielsson, H., De Simone, N., Duval, F., Döbrich, B., Federici, L., Gamberini, E., Gatignon, L., Guida, R., Hahn, F., Holzer, E. B., Jenninger, B., Koval, M., Laycock, P., Lehmann Miotto, G., Lichard, P., Mapelli, A., Marchevski, R., Massri, K., Noy, M., Palladino, V., Pinzino, J., Ryjov, V., Schuchmann, S., Venditti, S., Bache, T., Brunetti, M. B., Duk, V., Fascianelli, V., Fry, J. R., Gonnella, F., Goudzovski, E., Henshaw, J., Iacobuzio, L., Kenworthy, C., Lazzeroni, C., Lurkin, N., Newson, F., Parkinson, C., Romano, A., Sanders, J., Sergi, A., Sturgess, A., Swallow, J., Tomczak, A., Heath, H., Page, R., Trilov, S., Angelucci, B., Britton, D., Graham, C., Protopopescu, D., Carmignani, J., Dainton, J. B., Jones, R. W. L., Ruggiero, G., Fulton, L., Hutchcroft, D., Maurice, E., Wrona, B., Conovaloff, A., Cooper, P., Coward, D., Rubin, P., Baeva, A., Baigarashev, D., Emelyanov, D., Enik, T., Falaleev, V., Fedotov, S., Gorshanov, K., Gushchin, E., Kekelidze, V., Kereibay, D., Kholodenko, S., Khotyantsev, A., Korotkova, A., Kudenko, Y., Kurochka, V., Kurshetsov, V., Litov, L., Madigozhin, D., Medvedeva, M., Mefodev, A., Misheva, M., Molokanova, N., Movchan, S., Obraztsov, V., Okhotnikov, A., Ostankov, A., Polenkevich, I., Potrebenikov, Yu., Sadovskiy, A., Semenov, V., Shkarovskiy, S., Sugonyaev, V., Yushchenko, O., and Zinchenko, A.

Published
2023
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7. A study of the K+→ π0e+νγ decay

Author

Cortina Gil, E., Kleimenova, A., Minucci, E., Padolski, S., Petrov, P., Shaikhiev, A., Volpe, R., Numao, T., Petrov, Y., Velghe, B., Wong, V. W. S., Bryman, D., Fu, J., Hives, Z., Husek, T., Jerhot, J., Kampf, K., Zamkovsky, M., De Martino, B., Perrin-Terrin, M., Akmete, A. T., Aliberti, R., Khoriauli, G., Kunze, J., Lomidze, D., Peruzzo, L., Vormstein, M., Wanke, R., Dalpiaz, P., Fiorini, M., Mazzolari, A., Neri, I., Norton, A., Petrucci, F., Soldani, M., Wahl, H., Bandiera, L., Cotta Ramusino, A., Gianoli, A., Romagnoni, M., Sytov, A., Iacopini, E., Latino, G., Lenti, M., Lo Chiatto, P., Panichi, I., Parenti, A., Bizzeti, A., Bucci, F., Antonelli, A., Georgiev, G., Kozhuharov, V., Lanfranchi, G., Martellotti, S., Moulson, M., Spadaro, T., Tinti, G., Ambrosino, F., Capussela, T., Corvino, M., D’Errico, M., Di Filippo, D., Fiorenza, R., Giordano, R., Massarotti, P., Mirra, M., Napolitano, M., Rosa, I., Saracino, G., Anzivino, G., Brizioli, F., Imbergamo, E., Lollini, R., Piandani, R., Santoni, C., Barbanera, M., Cenci, P., Checcucci, B., Lubrano, P., Lupi, M., Pepe, M., Piccini, M., Costantini, F., Di Lella, L., Doble, N., Giorgi, M., Giudici, S., Lamanna, G., Lari, E., Pedreschi, E., Sozzi, M., Cerri, C., Fantechi, R., Pontisso, L., Spinella, F., Mannelli, I., D’Agostini, G., Raggi, M., Biagioni, A., Cretaro, P., Frezza, O., Leonardi, E., Lonardo, A., Turisini, M., Valente, P., Vicini, P., Ammendola, R., Bonaiuto, V., Fucci, A., Salamon, A., Sargeni, F., Arcidiacono, R., Bloch-Devaux, B., Boretto, M., Menichetti, E., Migliore, E., Soldi, D., Biino, C., Filippi, A., Marchetto, F., Briano Olvera, A., Engelfried, J., Estrada-Tristan, N., Reyes Santos, M. A., Boboc, P., Bragadireanu, A. M., Ghinescu, S. A., Hutanu, O. E., Bician, L., Blazek, T., Cerny, V., Kucerova, Z., Bernhard, J., Ceccucci, A., Ceoletta, M., Danielsson, H., De Simone, N., Duval, F., Döbrich, B., Federici, L., Gamberini, E., Gatignon, L., Guida, R., Hahn, F., Holzer, E. B., Jenninger, B., Koval, M., Laycock, P., Lehmann Miotto, G., Lichard, P., Mapelli, A., Marchevski, R., Massri, K., Noy, M., Palladino, V., Pinzino, J., Ryjov, V., Schuchmann, S., Venditti, S., Bache, T., Brunetti, M. B., Duk, V., Fascianelli, V., Fry, J. R., Gonnella, F., Goudzovski, E., Henshaw, J., Iacobuzio, L., Kenworthy, C., Lazzeroni, C., Lurkin, N., Newson, F., Parkinson, C., Romano, A., Sanders, J., Sergi, A., Sturgess, A., Swallow, J., Tomczak, A., Heath, H., Page, R., Trilov, S., Angelucci, B., Britton, D., Graham, C., Protopopescu, D., Carmignani, J., Dainton, J. B., Jones, R. W. L., Ruggiero, G., Fulton, L., Hutchcroft, D., Maurice, E., Wrona, B., Conovaloff, A., Cooper, P., Coward, D., Rubin, P., Baeva, A., Baigarashev, D., Emelyanov, D., Enik, T., Falaleev, V., Fedotov, S., Gorshanov, K., Gushchin, E., Kekelidze, V., Kereibay, D., Kholodenko, S., Khotyantsev, A., Korotkova, A., Kudenko, Y., Kurochka, V., Kurshetsov, V., Litov, L., Madigozhin, D., Medvedeva, M., Mefodev, A., Misheva, M., Molokanova, N., Movchan, S., Obraztsov, V., Okhotnikov, A., Ostankov, A., Polenkevich, I., Potrebenikov, Yu., Sadovskiy, A., Semenov, V., Shkarovskiy, S., Sugonyaev, V., Yushchenko, O., and Zinchenko, A.

Published
2023
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8. Measurement of the branching fraction for the decay $K_S \to \pi \mu \nu$ with the KLOE detector

Author

Babusci, D., Berlowski, M., Bloise, C., Bossi, F., Branchini, P., Budano, A., Cao, B., Ceradini, F., Ciambrone, P., Curciarello, F., Czerwisnski, E., D'Agostini, G., Danè, E., De Leo, V., De Lucia, E., De Santis, A., De Simone, P., Di Cicco, A., Di Domenico, A., Domenici, D., D'Uffizi, A., Fantini, A., Fermani, P., Fiore, S., Gajos, A., Gauzzi, P., Giovannella, S., Graziani, E., Ivanov, V. L., Johansson, T., Kang, X., Kisielewska-Kamisnska, D., Kozyrev, E. A., Krzemien, W., Kupsc, A., Lukin, P. A., Mandaglio, G., Martini, M., Messi, R., Miscetti, S., Moricciani, D., Moskal, P., Parzych, S., Passeri, A., Patera, V., del Rio, E. Perez, Santangelo, P., Schioppa, M., Selce, A., Silarski, M., Sirghi, F., Solodov, E. P., Tortora, L., Venanzoni, G., Wislicki, W., and Wolke, M.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

Based on a sample of 300 million $K_S$ mesons produced in $\phi \to K_L K_S$ decays recorded by the KLOE experiment at the DA$\Phi$NE $e^+e^-$ collider we have measured the branching fraction for the decay $K_S \to \pi \mu \nu$. The $K_S$ mesons are identified by the interaction of $K_L$ mesons in the detector. The $K_S \to \pi \mu \nu$ decays are selected by a boosted decision tree built with kinematic variables and by a time-of-flight measurement. Signal efficiencies are evaluated with data control samples of $K_L \to \pi \mu \nu$ decays. A fit to the reconstructed muon mass distribution finds $7223 \pm 180$ signal events. Normalising to the $K_S \to \pi^+ \pi^-$ decay events the result for the branching fraction is $\mathcal{B}(K_S \to \pi \mu \nu) = (4.56 \pm 0.11_{\rm stat} \pm 0.17_{\rm syst})\times10^{-4}$., Comment: 16 pages, 12 figures, Accepted in PLB

Published
2019
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9. Addendum to: A measurement of the K+→ π+μ+μ− decay

Author

Cortina Gil, E., Kleimenova, A., Minucci, E., Padolski, S., Petrov, P., Shaikhiev, A., Volpe, R., Numao, T., Petrov, Y., Velghe, B., Wong, V. W. S., Bryman, D., Fu, J., Husek, T., Jerhot, J., Kampf, K., Zamkovsky, M., Aliberti, R., Khoriauli, G., Kunze, J., Lomidze, D., Peruzzo, L., Vormstein, M., Wanke, R., Dalpiaz, P., Fiorini, M., Neri, I., Norton, A., Petrucci, F., Wahl, H., Cotta Ramusino, A., Gianoli, A., Iacopini, E., Latino, G., Lenti, M., Parenti, A., Bizzeti, A., Bucci, F., Antonelli, A., Georgiev, G., Kozhuharov, V., Lanfranchi, G., Martellotti, S., Moulson, M., Spadaro, T., Tinti, G., Ambrosino, F., Capussela, T., Corvino, M., Di Filippo, D., Fiorenza, R., Massarotti, P., Mirra, M., Napolitano, M., Saracino, G., Anzivino, G., Brizioli, F., Imbergamo, E., Lollini, R., Piandani, R., Santoni, C., Barbanera, M., Cenci, P., Checcucci, B., Lubrano, P., Lupi, M., Pepe, M., Piccini, M., Costantini, F., Di Lella, L., Doble, N., Giorgi, M., Giudici, S., Lamanna, G., Lari, E., Pedreschi, E., Sozzi, M., Cerri, C., Fantechi, R., Pontisso, L., Spinella, F., Mannelli, I., D’Agostini, G., Raggi, M., Biagioni, A., Cretaro, P., Frezza, O., Leonardi, E., Lonardo, A., Turisini, M., Valente, P., Vicini, P., Ammendola, R., Bonaiuto, V., Fucci, A., Salamon, A., Sargeni, F., Arcidiacono, R., Bloch-Devaux, B., Boretto, M., Menichetti, E., Migliore, E., Soldi, D., Biino, C., Filippi, A., Marchetto, F., Engelfried, J., Estrada-Tristan, N., Bragadireanu, A. M., Ghinescu, S. A., Hutanu, O. E., Baeva, A., Baigarashev, D., Emelyanov, D., Enik, T., Falaleev, V., Kekelidze, V., Korotkova, A., Litov, L., Madigozhin, D., Misheva, M., Molokanova, N., Movchan, S., Polenkevich, I., Potrebenikov, Yu., Shkarovskiy, S., Zinchenko, A., Fedotov, S., Gushchin, E., Khotyantsev, A., Kudenko, Y., Kurochka, V., Medvedeva, M., Mefodev, A., Kholodenko, S., Kurshetsov, V., Obraztsov, V., Ostankov, A., Semenov, V., Sugonyaev, V., Yushchenko, O., Bician, L., Blazek, T., Cerny, V., Kucerova, Z., Bernhard, J., Ceccucci, A., Danielsson, H., De Simone, N., Duval, F., Döbrich, B., Federici, L., Gamberini, E., Gatignon, L., Guida, R., Hahn, F., Holzer, E. B., Jenninger, B., Koval, M., Laycock, P., Lehmann Miotto, G., Lichard, P., Mapelli, A., Marchevski, R., Massri, K., Noy, M., Palladino, V., Perrin-Terrin, M., Pinzino, J., Ryjov, V., Schuchmann, S., Venditti, S., Bache, T., Brunetti, M. B., Duk, V., Fascianelli, V., Fry, J. R., Gonnella, F., Goudzovski, E., Henshaw, J., Iacobuzio, L., Lazzeroni, C., Lurkin, N., Newson, F., Parkinson, C., Romano, A., Sergi, A., Sturgess, A., Swallow, J., Tomczak, A., Heath, H., Page, R., Trilov, S., Angelucci, B., Britton, D., Graham, C., Protopopescu, D., Carmignani, J., Dainton, J. B., Jones, R. W. L., Ruggiero, G., Fulton, L., Hutchcroft, D., Maurice, E., Wrona, B., Conovaloff, A., Cooper, P., Coward, D., and Rubin, P.

Published
2023
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10. Performance of the NA62 trigger system

Author

Cortina Gil, E., Kleimenova, A., Minucci, E., Padolski, S., Petrov, P., Shaikhiev, A., Volpe, R., Numao, T., Petrov, Y., Velghe, B., Wong, V. W. S., Bryman, D., Fu, J., Husek, T., Jerhot, J., Kampf, K., Zamkovsky, M., Aliberti, R., Khoriauli, G., Kunze, J., Lomidze, D., Peruzzo, L., Vormstein, M., Wanke, R., Dalpiaz, P., Fiorini, M., Neri, I., Norton, A., Petrucci, F., Wahl, H., Cotta Ramusino, A., Gianoli, A., Iacopini, E., Latino, G., Lenti, M., Parenti, A., Bizzeti, A., Bucci, F., Antonelli, A., Georgiev, G., Kozhuharov, V., Lanfranchi, G., Martellotti, S., Moulson, M., Spadaro, T., Tinti, G., Ambrosino, F., Capussela, T., Corvino, M., Di Filippo, D., Fiorenza, R., Massarotti, P., Mirra, M., Napolitano, M., Saracino, G., Anzivino, G., Brizioli, F., Imbergamo, E., Lollini, R., Piandani, R., Santoni, C., Barbanera, M., Cenci, P., Checcucci, B., Lubrano, P., Lupi, M., Pepe, M., Piccini, M., Costantini, F., Di Lella, L., Doble, N., Giorgi, M., Giudici, S., Lamanna, G., Lari, E., Pedreschi, E., Sozzi, M., Cerri, C., Fantechi, R., Pontisso, L., Spinella, F., Mannelli, I., D’Agostini, G., Raggi, M., Biagioni, A., Cretaro, P., Frezza, O., Leonardi, E., Lonardo, A., Turisini, M., Valente, P., Vicini, P., Ammendola, R., Bonaiuto, V., Fucci, A., Salamon, A., Sargeni, F., Arcidiacono, R., Bloch-Devaux, B., Boretto, M., Menichetti, E., Migliore, E., Soldi, D., Biino, C., Filippi, A., Marchetto, F., Engelfried, J., Estrada-Tristan, N., Bragadireanu, A. M., Ghinescu, S. A., Hutanu, O. E., Baeva, A., Baigarashev, D., Emelyanov, D., Enik, T., Falaleev, V., Kekelidze, V., Korotkova, A., Litov, L., Madigozhin, D., Misheva, M., Molokanova, N., Movchan, S., Polenkevich, I., Potrebenikov, Yu., Shkarovskiy, S., Zinchenko, A., Fedotov, S., Gushchin, E., Khotyantsev, A., Kudenko, Y., Kurochka, V., Medvedeva, M., Mefodev, A., Kholodenko, S., Kurshetsov, V., Obraztsov, V., Ostankov, A., Semenov, V., Sugonyaev, V., Yushchenko, O., Bician, L., Blazek, T., Cerny, V., Kucerova, Z., Bernhard, J., Ceccucci, A., Danielsson, H., De Simone, N., Duval, F., Döbrich, B., Federici, L., Gamberini, E., Gatignon, L., Guida, R., Hahn, F., Holzer, E. B., Jenninger, B., Koval, M., Laycock, P., Lehmann Miotto, G., Lichard, P., Mapelli, A., Marchevski, R., Massri, K., Noy, M., Palladino, V., Perrin-Terrin, M., Pinzino, J., Ryjov, V., Schuchmann, S., Venditti, S., Bache, T., Brunetti, M. B., Duk, V., Fascianelli, V., Fry, J. R., Gonnella, F., Goudzovski, E., Henshaw, J., Iacobuzio, L., Lazzeroni, C., Lurkin, N., Newson, F., Parkinson, C., Romano, A., Sergi, A., Sturgess, A., Swallow, J., Tomczak, A., Heath, H., Page, R., Trilov, S., Angelucci, B., Britton, D., Graham, C., Protopopescu, D., Carmignani, J., Dainton, J. B., Jones, R. W. L., Ruggiero, G., Fulton, L., Hutchcroft, D., Maurice, E., Wrona, B., Conovaloff, A., Cooper, P., Coward, D., and Rubin, P.

Published
2023
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11. Search for $K^{+}\rightarrow\pi^{+}\nu\overline{\nu}$ at NA62

Author

NA62 Collaboration, Rinella, G. Aglieri, Aliberti, R., Ambrosino, F., Ammendola, R., Angelucci, B., Antonelli, A., Anzivino, G., Arcidiacono, R., Azhinenko, I., Balev, S., Barbanera, M., Bendotti, J., Biagioni, A., Bician, L., Biino, C., Bizzeti, A., Blazek, T., Blik, A., Bloch-Devaux, B., Bolotov, V., Bonaiuto, V., Boretto, M., Bragadireanu, M., Britton, D., Britvich, G., Brunetti, M. B., Bryman, D., Bucci, F., Butin, F., Calvo, J., Capitolo, E., Capoccia, C., Capussela, T., Cassese, A., Catinaccio, A., Cecchetti, A., Ceccucci, A., Cenci, P., Cerny, V., Cerri, C., Checcucci, B., Chikilev, O., Chiozzi, S., Ciaranfi, R., Collazuol, G., Conovaloff, A., Cooke, P., Cooper, P., Corradi, G., Gil, E. Cortina, Costantini, F., Cotorobai, F., Ramusino, A. Cotta, Coward, D., D'Agostini, G., Dainton, J., Dalpiaz, P., Danielsson, H., Degrange, J., De Simone, N., Di Filippo, D., Di Lella, L., Di Lorenzo, S., Dixon, N., Doble, N., Dobrich, B., Duk, V., Elsha, V., Engelfried, J., Enik, T., Estrada, N., Falaleev, V., Fantechi, R., Fascianelli, V., Federici, L., Fedotov, S., Filippi, A., Fiorini, M., Fry, J., Fu, J., Fucci, A., Fulton, L., Gallorini, S., Galeotti, S., Gamberini, E., Gatignon, L., Georgiev, G., Ghinescu, S., Gianoli, A., Giorgi, M., Giudici, S., Glonti, L., Martins, A. Goncalves, Gonnella, F., Goudzovski, E., Guida, R., Gushchin, E., Hahn, F., Hallgren, B., Heath, H., Herman, F., Husek, T., Hutanu, O., Hutchcroft, D., Iacobuzio, L., Iacopini, E., Imbergamo, E., Jamet, O., Jarron, P., Jones, E., Kampf, T. Jones K., Kaplon, J., Kekelidze, V., Kholodenko, S., Khoriauli, G., Khotyantsev, A., Khudyakov, A., Kiryushin, Yu., Kleimenova, A., Kleinknecht, K., Kluge, A., Koval, M., Kozhuharov, V., Krivda, M., Kucerova, Z., Kudenko, Yu., Kunze, J., Lamanna, G., Latino, G., Lazzeroni, C., Lehmann-Miotto, G., Lenci, R., Lenti, M., Leonardi, E., Lichard, P., Lietava, R., Likhacheva, V., Litov, L., Lollini, R., Lomidze, D., Lonardo, A., Lupi, M., Lurkin, N., McCormick, K., Madigozhin, D., Maire, G., Mandeiro, C., Mannelli, I., Mannocchi, G., Mapelli, A., Marchetto, F., Marchevski, R., Martellotti, S., Massarotti, P., Massri, K., Matak, P., Maurice, E., Medvedeva, M., Mefodev, A., Menichetti, E., Migliore, E., Minucci, E., Mirra, M., Misheva, M., Molokanova, N., Morant, J., Morel, M., Moulson, M., Movchan, S., Munday, D., Napolitano, M., Neri, I., Newson, F., Noël, J., Norton, A., Noy, M., Nuessle, G., Numao, T., Obraztsov, V., Ostankov, A., Padolski, S., Page, R., Palladino, V., Paoluzzi, G., Parkinson, C., Pedreschi, E., Pepe, M., Gomez, F. Perez, Perrin-Terrin, M., Peruzzo, L., Petrov, P., Petrucci, F., Piandani, R., Piccini, M., Pietreanu, D., Pinzino, J., Polenkevich, I., Pontisso, L., Potrebenikov, Yu., Protopopescu, D., Raffaelli, F., Raggi, M., Riedler, P., Romano, A., Rubin, P., Ruggiero, G., Russo, V., Ryjov, V., Salamon, A., Salina, G., Samsonov, V., Santoni, C., Saracino, G., Sargeni, F., Semenov, V., Sergi, A., Serra, M., Shaikhiev, A., Shkarovskiy, S., Skillicorn, I., Soldi, D., Sotnikov, A., Sugonyaev, V., Sozzi, M., Spadaro, T., Spinella, F., Staley, R., Sturgess, A., Sutcliffe, P., Szilasi, N., Tagnani, D., Trilov, S., Valdata-Nappi, M., Valente, P., Vasile, M., Vassilieva, T., Velghe, B., Veltri, M., Venditti, S., Vicini, P., Volpe, R., Vormstein, M., Wahl, H., Wanke, R., Wertelaers, P., Winhart, A., Winston, R., Wrona, B., Yushchenko, O., Zamkovsky, M., and Zinchenko, A.

Subjects
High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract

$K^{+}\rightarrow\pi^{+}\nu\overline{\nu}$ is one of the theoretically cleanest meson decay where to look for indirect effects of new physics complementary to LHC searches. The NA62 experiment at CERN SPS is designed to measure the branching ratio of this decay with 10\% precision. NA62 took data in pilot runs in 2014 and 2015 reaching the final designed beam intensity. The quality of 2015 data acquired, in view of the final measurement, will be presented., Comment: proceeding of the conference New Trends in High-Energy Physics 2016

Published
2018

12. Measurement of the charge asymmetry for the $K_S \rightarrow \pi e \nu$ decay and test of CPT symmetry with the KLOE detector

Author

Anastasi, A., Babusci, D., Berłowski, M., Bloise, C., Bossi, F., Branchini, P., Budano, A., Cao, B., Capon, G., Ceradini, F., Ciambrone, P., Curciarello, F., Czerwiński, E., D'Agostini, G., Danè, E., De Leo, V., De Lucia, E., De Santis, A., De Simone, P., Di Cicco, A., Di Domenico, A., Domenici, D., D'Uffizi, A., Fantini, A., Fantini, G., Fermani, P., Fiore, S., Gajos, A., Gauzzi, P., Giovannella, S., Graziani, E., Ivanov, V. L., Johansson, T., Kang, X., Kisielewska-Kamińska, D., Kozyrev, E. A., Krzemień, W., Kupść, A., Loffredo, S., Lukin, P. A., Mandaglio, G., Martini, M., Messi, R., Miscetti, S., Moricciani, D., Moskal, P., Passeri, A., Patera, V., del Rio, E. Perez, Raha, N., Santangelo, P., Schioppa, M., Selce, A., Silarski, M., Sirghi, F., Solodov, E. P., Tortora, L., Venanzoni, G., Wiślicki, W., and Wolke, M.

Subjects
High Energy Physics - Experiment
Abstract

Using 1.63 fb$^{-1}$ of integrated luminosity collected by the KLOE experiment about $7\times 10^4$ $K_S \rightarrow \pi^{\pm}e^{\mp}\nu$ decays have been reconstructed. The measured value of the charge asymmetry for this decay is $A_S = (-4.9 \pm 5.7_{stat} \pm 2.6_{syst}) \times 10^{-3}$, which is almost twice more precise than the previous KLOE result. The combination of these two measurements gives $A_S = (-3.8 \pm 5.0_{stat} \pm 2.6_{syst}) \times 10^{-3}$ and, together with the asymmetry of the $K_L$ semileptonic decay, provides significant tests of the CPT symmetry. The obtained results are in agreement with CPT invariance., Comment: submitted to JHEP

Published
2018
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13. On the Japanese Multiplication Method. A father-and-daughter dialogue

Author

D'Agostini, G.

Subjects
Mathematics - History and Overview
Abstract

Recently the media broadcast the news, together with illustrative videos, of a so-called Japanese method to perform multiplication by hand without using the multiplication tables. "Goodbye multiplication tables" was the headline of several websites, including important ones, where news are however too often `re-posted' uncritically. The easy numerical examples could induce naive internauts to believe that, in a short future, multiplications could be really done without the knowledge of multiplication tables. This is what a girl expresses, with great enthusiasm, to her father. The dialogues described here, although not real, are likely and have been inspired by this episode, being Maddalena the daughter of the author. Obviously the revolutionary value of the new method is easily disassembled, while its educational utility is highlighted to show (or remember) the reasoning on which the method learned in elementary school is based, although mostly applied mechanically., Comment: 14 pages, 15 figures, in Italian, published in Progetto Alice, Rivista di Matematica e Didattica

Published
2018

15. Measurement of the KS→ πeν branching fraction with the KLOE experiment

Author

Babusci, D., Berlowski, M., Bloise, C., Bossi, F., Branchini, P., Cao, B., Ceradini, F., Ciambrone, P., Curciarello, F., Czerwiński, E., D’Agostini, G., D’Amico, R., Danè, E., De Leo, V., De Lucia, E., De Santis, A., De Simone, P., Di Cicco, A., Di Domenico, A., Diociaiuti, E., Domenici, D., D’Uffizi, A., Fantini, G., Gajos, A., Gamrat, S., Gauzzi, P., Giovannella, S., Graziani, E., Kang, X., Kupsc, A., Mandaglio, G., Martini, M., Miscetti, S., Moskal, P., Passeri, A., Perez del Rio, E., Schioppa, M., Selce, A., Silarski, M., Sirghi, F., Solodov, E. P., Wiślicki, W., and Wolke, M.

Published
2023
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16. Combination of KLOE $\sigma\big(e^+e^-\rightarrow\pi^+\pi^-\gamma(\gamma)\big)$ measurements and determination of $a_{\mu}^{\pi^+\pi^-}$ in the energy range $0.10 < s < 0.95$ GeV$^2$

Author

Collaboration, The KLOE-2, Anastasi, A., Babusci, D., Berlowski, M., Bloise, C., Bossi, F., Branchini, P., Budano, A., Balkeståhl, L. Caldeira, Cao, B., Ceradini, F., Ciambrone, P., Curciarello, F., Czerwiński, E., D'Agostini, G., Danè, E., De Leo, V., De Lucia, E., De Santis, A., De Simone, P., Di Cicco, A., Di Domenico, A., Domenici, D., D'Uffizi, A., Fantini, A., Fantini, G., Fermani, P., Fiore, S., Gajos, A., Gauzzi, P., Giovannella, S., Graziani, E., Ivanov, V. L., Johansson, T., Kisielewska-Kamińska, D., Kang, X., Kozyrev, E. A., Krzemien, W., Kupsc, A., Loffredo, S., Lukin, P. A., Mandaglio, G., Martini, M., Messi, R., Miscetti, S., Morello, G., Moricciani, D., Moskal, P., Passeri, A., Patera, V., del Rio, E. Perez, Raha, N., Santangelo, P., Schioppa, M., Selce, A., Silarski, M., Sirghi, F., Solodov, E. P., Tortora, L., Venanzoni, G., Wiślicki, W., Wolke, M., Keshavarzi, A., Müller, S. E., and Teubner, T.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

The three precision measurements of the cross section $\sigma\big(e^+e^-\rightarrow\pi^+\pi^-\gamma(\gamma)\big)$ using initial state radiation by the KLOE collaboration provide an important input for the prediction of the hadronic contribution to the anomalous magnetic moment of the muon. These measurements are correlated for both statistical and systematic uncertainties and, therefore, the simultaneous use of these measurements requires covariance matrices that fully describe the correlations. We present the construction of these covariance matrices and use them to determine a combined KLOE measurement for $\sigma\big(e^+e^-\rightarrow\pi^+\pi^-\gamma(\gamma)\big)$. We find, from this combination, a two-pion contribution to the muon magnetic anomaly in the energy range $0.10 < s < 0.95$ GeV$^2$ of $a_{\mu}^{\pi^+\pi^-} = (489.8 \pm 1.7_{\rm stat} \pm 4.8_{\rm sys} ) \times 10^{-10}$., Comment: 20 pages, 8 figures. Version as published in JHEP 1803 (2018) 173

Published
2017

17. A measurement of the K+→ π+μ+μ− decay

Author

Cortina Gil, E., Kleimenova, A., Minucci, E., Padolski, S., Petrov, P., Shaikhiev, A., Volpe, R., Numao, T., Petrov, Y., Velghe, B., Wong, V. W. S., Bryman, D., Fu, J., Husek, T., Jerhot, J., Kampf, K., Zamkovsky, M., Aliberti, R., Khoriauli, G., Kunze, J., Lomidze, D., Peruzzo, L., Vormstein, M., Wanke, R., Dalpiaz, P., Fiorini, M., Neri, I., Norton, A., Petrucci, F., Wahl, H., Cotta Ramusino, A., Gianoli, A., Iacopini, E., Latino, G., Lenti, M., Parenti, A., Bizzeti, A., Bucci, F., Antonelli, A., Georgiev, G., Kozhuharov, V., Lanfranchi, G., Martellotti, S., Moulson, M., Spadaro, T., Tinti, G., Ambrosino, F., Capussela, T., Corvino, M., Di Filippo, D., Fiorenza, R., Massarotti, P., Mirra, M., Napolitano, M., Saracino, G., Anzivino, G., Brizioli, F., Imbergamo, E., Lollini, R., Piandani, R., Santoni, C., Barbanera, M., Cenci, P., Checcucci, B., Lubrano, P., Lupi, M., Pepe, M., Piccini, M., Costantini, F., Di Lella, L., Doble, N., Giorgi, M., Giudici, S., Lamanna, G., Lari, E., Pedreschi, E., Sozzi, M., Cerri, C., Fantechi, R., Pontisso, L., Spinella, F., Mannelli, I., D’Agostini, G., Raggi, M., Biagioni, A., Cretaro, P., Frezza, O., Leonardi, E., Lonardo, A., Turisini, M., Valente, P., Vicini, P., Ammendola, R., Bonaiuto, V., Fucci, A., Salamon, A., Sargeni, F., Arcidiacono, R., Bloch-Devaux, B., Boretto, M., Menichetti, E., Migliore, E., Soldi, D., Biino, C., Filippi, A., Marchetto, F., Engelfried, J., Estrada-Tristan, N., Bragadireanu, A. M., Ghinescu, S. A., Hutanu, O. E., Baeva, A., Baigarashev, D., Emelyanov, D., Enik, T., Falaleev, V., Kekelidze, V., Korotkova, A., Litov, L., Madigozhin, D., Misheva, M., Molokanova, N., Movchan, S., Polenkevich, I., Potrebenikov, Yu., Shkarovskiy, S., Zinchenko, A., Fedotov, S., Gushchin, E., Khotyantsev, A., Kudenko, Y., Kurochka, V., Medvedeva, M., Mefodev, A., Kholodenko, S., Kurshetsov, V., Obraztsov, V., Ostankov, A., Semenov, V., Sugonyaev, V., Yushchenko, O., Bician, L., Blazek, T., Cerny, V., Kucerova, Z., Bernhard, J., Ceccucci, A., Danielsson, H., De Simone, N., Duval, F., Döbrich, B., Federici, L., Gamberini, E., Gatignon, L., Guida, R., Hahn, F., Holzer, E. B., Jenninger, B., Koval, M., Laycock, P., Lehmann Miotto, G., Lichard, P., Mapelli, A., Marchevski, R., Massri, K., Noy, M., Palladino, V., Perrin-Terrin, M., Pinzino, J., Ryjov, V., Schuchmann, S., Venditti, S., Bache, T., Brunetti, M. B., Duk, V., Fascianelli, V., Fry, J. R., Gonnella, F., Goudzovski, E., Henshaw, J., Iacobuzio, L., Lazzeroni, C., Lurkin, N., Newson, F., Parkinson, C., Romano, A., Sergi, A., Sturgess, A., Swallow, J., Tomczak, A., Heath, H., Page, R., Trilov, S., Angelucci, B., Britton, D., Graham, C., Protopopescu, D., Carmignani, J., Dainton, J. B., Jones, R. W. L., Ruggiero, G., Fulton, L., Hutchcroft, D., Maurice, E., Wrona, B., Conovaloff, A., Cooper, P., Coward, D., and Rubin, P.

Published
2022
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18. Status of searches for rare kaon decays at NA62 & HIKE

Author

Martellotti, Silvia, primary, Akmete, A., additional, Aliberti, R., additional, Ambrosino, F., additional, Ammendola, R., additional, Angelucci, B., additional, Antonelli, A., additional, Anzivino, G., additional, Arcidiacono, R., additional, Bache, T., additional, Baeva, A., additional, Baigarashev, D., additional, Bandiera, L., additional, Barbanera, M., additional, Bernhard, J., additional, Biagioni, A., additional, Bician, L., additional, Biino, C., additional, Bizzeti, A., additional, Blazek, T., additional, Bloch Devaux, B., additional, Boboc, P., additional, Bonaiuto, V., additional, Boretto, M., additional, Bragadireanu, M., additional, Briano Olvera, A., additional, Britton, D., additional, Brizioli, F., additional, Brunetti, M.B., additional, Bryman, D., additional, Bucci, F., additional, Capussela, T., additional, Carmignani, J., additional, Ceccucci, A., additional, Cenci, P., additional, Cerny, V., additional, Cerri, C., additional, Checcucci, B., additional, Conovaloff, A., additional, Cooper, P., additional, Cortina Gil, E., additional, Corvino, M., additional, Costantini, F., additional, Cotta Ramusino, A., additional, Coward, D., additional, Cretaro, P., additional, D’Agostini, G., additional, Dainton, J., additional, Dalpiaz, P., additional, Danielsson, H., additional, D’Errico, M., additional, De Simone, N., additional, Di Filippo, D., additional, Di Lella, L., additional, Doble, N., additional, Dobrich, B., additional, Duval, F., additional, Duk, V., additional, Emelyanov, D., additional, Engelfried, J., additional, Enik, T., additional, Estrada-Tristan, N., additional, Falaleev, V., additional, Fantechi, R., additional, Fascianelli, V., additional, Federici, L., additional, Fedotov, S., additional, Filippi, A., additional, Fiorenza, R., additional, Fiorini, M., additional, Frezza, O., additional, Fry, J., additional, Fu, J., additional, Fucci, A., additional, Fulton, L., additional, Gamberini, E., additional, Gatignon, L., additional, Georgiev, G., additional, Ghinescu, S., additional, Gianoli, A., additional, Giorgi, M., additional, Giudici, S., additional, Gonnella, F., additional, Gorshanov, K., additional, Goudzovski, E., additional, Graham, C., additional, Guida, R., additional, Gushchin, E., additional, Hahn, F., additional, Heath, H., additional, Henshaw, J., additional, Hives, Z., additional, Holzer, E. B., additional, Husek, T., additional, Hutanu, O., additional, Hutchcroft, D., additional, Iacobuzio, L., additional, Iacopini, E., additional, Imbergamo, E., additional, Jenninger, B., additional, R.W. Jones, J. Jerhot, additional, Kampf, K., additional, Kekelidze, V., additional, Kereibay, D., additional, Kholodenko, S., additional, Khoriauli, G., additional, Khotyantsev, A., additional, Kleimenova, A., additional, Korotkova, A., additional, Koval, M., additional, Kozhuharov, V., additional, Kucerova, Z., additional, Kudenko, Y., additional, Kunze, J., additional, Kurochka, V., additional, Kurshetsov, V., additional, Lanfranchi, G., additional, Lamanna, G., additional, Lari, E., additional, Latino, G., additional, Laycock, P., additional, Lazzeroni, C., additional, Lenti, M., additional, Lehmann Miotto, G., additional, Leonardi, E., additional, Lichard, P., additional, Litov, L., additional, Lo Chiatto, P., additional, Lollini, R., additional, Lomidze, D., additional, Lonardo, A., additional, Lubrano, P., additional, Lupi, M., additional, Lurkin, N., additional, Madigozhin, D., additional, Mannelli, I., additional, Mapelli, A., additional, Marchetto, F., additional, Marchevski, R., additional, Martellotti, S., additional, Massarotti, P., additional, Massri, K., additional, Maurice, E., additional, Mazzolari, A., additional, Medvedeva, M., additional, Mefodev, A., additional, Menichetti, E., additional, Migliore, E., additional, Minucci, E., additional, Mirra, M., additional, Misheva, M., additional, Molokanova, N., additional, Moulson, M., additional, Movchan, S., additional, Napolitano, M., additional, Neri, I., additional, Newson, F., additional, Norton, A., additional, Noy, M., additional, Numao, T., additional, Obraztsov, V., additional, Okhotnikov, A., additional, Ostankov, A., additional, Padolski, S., additional, Page, R., additional, Palladino, V., additional, Panichi, I., additional, Parenti, A., additional, Parkinson, C., additional, Pedreschi, E., additional, Pepe, M., additional, Perrin-Terrin, M., additional, Peruzzo, L., additional, Petrov, P., additional, Petrov, Y., additional, Petrucci, F., additional, Piandani, R., additional, Piccini, M., additional, Pinzino, J., additional, Polenkevich, I., additional, Pontisso, L., additional, Potrebenikov, Y., additional, Protopopescu, D., additional, Raggi, M., additional, Reyes Santos, M., additional, Romagnoni, M., additional, Romano, A., additional, Rubin, P., additional, Ruggiero, G., additional, Ryjov, V., additional, Sadovsky, A., additional, Salamon, A., additional, Santoni, C., additional, Saracino, G., additional, Sargeni, F., additional, Schuchmann, S., additional, Semenov, V., additional, Sergi, A., additional, Shaikhiev, A., additional, Shkarovskiy, S., additional, Soldani, M., additional, Soldi, D., additional, Sozzi, M., additional, Spadaro, T., additional, Spinella, F., additional, Sturgess, A., additional, Sugonyaev, V., additional, Swallow, J., additional, Sytov, A., additional, Tinti, G., additional, Tomczak, A., additional, Trilov, S., additional, Turisini, M., additional, Valente, P., additional, Velghe, B., additional, Venditti, S., additional, Vicini, P., additional, Volpe, R., additional, Vormstein, M., additional, Wahl, H., additional, Wanke, R., additional, Wong, V., additional, Wrona, B., additional, Yushchenko, O., additional, Zamkovsky, M., additional, and Zinchenko, A., additional

Published
2024
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19. Measurement of the K+ → π+γγ decay

Author

Cortina Gil, E., primary, Kleimenova, A., additional, Minucci, E., additional, Padolski, S., additional, Petrov, P., additional, Shaikhiev, A., additional, Volpe, R., additional, Numao, T., additional, Petrov, Y., additional, Velghe, B., additional, Wong, V.W.S., additional, Bryman, D., additional, Fu, J., additional, Hives, Z., additional, Husek, T., additional, Jerhot, J., additional, Kampf, K., additional, Zamkovsky, M., additional, De Martino, B., additional, Perrin-Terrin, M., additional, Döbrich, B., additional, Lezki, S., additional, Akmete, A.T., additional, Aliberti, R., additional, Khoriauli, G., additional, Kunze, J., additional, Lomidze, D., additional, Peruzzo, L., additional, Vormstein, M., additional, Wanke, R., additional, Dalpiaz, P., additional, Fiorini, M., additional, Mazzolari, A., additional, Neri, I., additional, Norton, A., additional, Petrucci, F., additional, Soldani, M., additional, Wahl, H., additional, Bandiera, L., additional, Cotta Ramusino, A., additional, Gianoli, A., additional, Romagnoni, M., additional, Sytov, A., additional, Iacopini, E., additional, Latino, G., additional, Lenti, M., additional, Lo Chiatto, P., additional, Panichi, I., additional, Parenti, A., additional, Bizzeti, A., additional, Bucci, F., additional, Antonelli, A., additional, Georgiev, G., additional, Kozhuharov, V., additional, Lanfranchi, G., additional, Martellotti, S., additional, Moulson, M., additional, Spadaro, T., additional, Tinti, G., additional, Ambrosino, F., additional, Capussela, T., additional, Corvino, M., additional, D'Errico, M., additional, Di Filippo, D., additional, Fiorenza, R., additional, Giordano, R., additional, Massarotti, P., additional, Mirra, M., additional, Napolitano, M., additional, Rosa, I., additional, Saracino, G., additional, Anzivino, G., additional, Brizioli, F., additional, Imbergamo, E., additional, Lollini, R., additional, Piandani, R., additional, Santoni, C., additional, Barbanera, M., additional, Cenci, P., additional, Checcucci, B., additional, Lubrano, P., additional, Lupi, M., additional, Pepe, M., additional, Piccini, M., additional, Costantini, F., additional, Di Lella, L., additional, Doble, N., additional, Giorgi, M., additional, Giudici, S., additional, Lamanna, G., additional, Lari, E., additional, Pedreschi, E., additional, Sozzi, M., additional, Cerri, C., additional, Fantechi, R., additional, Pontisso, L., additional, Spinella, F., additional, Mannelli, I., additional, D'Agostini, G., additional, Raggi, M., additional, Biagioni, A., additional, Cretaro, P., additional, Frezza, O., additional, Leonardi, E., additional, Lonardo, A., additional, Turisini, M., additional, Valente, P., additional, Vicini, P., additional, Ammendola, R., additional, Bonaiuto, V., additional, Fucci, A., additional, Salamon, A., additional, Sargeni, F., additional, Arcidiacono, R., additional, Bloch-Devaux, B., additional, Boretto, M., additional, Menichetti, E., additional, Migliore, E., additional, Soldi, D., additional, Biino, C., additional, Filippi, A., additional, Marchetto, F., additional, Briano Olvera, A., additional, Engelfried, J., additional, Estrada-Tristan, N., additional, Reyes Santos, M.A., additional, Rodriguez Rivera, K.A., additional, Boboc, P., additional, Bragadireanu, A.M., additional, Ghinescu, S.A., additional, Hutanu, O.E., additional, Bician, L., additional, Blazek, T., additional, Cerny, V., additional, Kucerova, Z., additional, Bernhard, J., additional, Ceccucci, A., additional, Ceoletta, M., additional, Danielsson, H., additional, De Simone, N., additional, Duval, F., additional, Federici, L., additional, Gamberini, E., additional, Gatignon, L., additional, Guida, R., additional, Hahn, F., additional, Holzer, E.B., additional, Jenninger, B., additional, Koval, M., additional, Laycock, P., additional, Lehmann Miotto, G., additional, Lichard, P., additional, Mapelli, A., additional, Marchevski, R., additional, Massri, K., additional, Noy, M., additional, Palladino, V., additional, Pinzino, J., additional, Ryjov, V., additional, Schuchmann, S., additional, Venditti, S., additional, Bache, T., additional, Brunetti, M.B., additional, Duk, V., additional, Fascianelli, V., additional, Fry, J.R., additional, Gonnella, F., additional, Goudzovski, E., additional, Henshaw, J., additional, Iacobuzio, L., additional, Kenworthy, C., additional, Lazzeroni, C., additional, Lurkin, N., additional, Newson, F., additional, Parkinson, C., additional, Romano, A., additional, Sanders, J., additional, Sergi, A., additional, Sturgess, A., additional, Swallow, J., additional, Tomczak, A., additional, Heath, H., additional, Page, R., additional, Trilov, S., additional, Angelucci, B., additional, Britton, D., additional, Graham, C., additional, Protopopescu, D., additional, Carmignani, J., additional, Dainton, J.B., additional, Jones, R.W.L., additional, Ruggiero, G., additional, Fulton, L., additional, Hutchcroft, D., additional, Maurice, E., additional, Wrona, B., additional, Conovaloff, A., additional, Cooper, P., additional, Coward, D., additional, Rubin, P., additional, Baeva, A., additional, Baigarashev, D., additional, Emelyanov, D., additional, Enik, T., additional, Falaleev, V., additional, Fedotov, S., additional, Gorshanov, K., additional, Gushchin, E., additional, Kekelidze, V., additional, Kereibay, D., additional, Kholodenko, S., additional, Khotyantsev, A., additional, Korotkova, A., additional, Kudenko, Y., additional, Kurochka, V., additional, Kurshetsov, V., additional, Litov, L., additional, Madigozhin, D., additional, Medvedeva, M., additional, Mefodev, A., additional, Misheva, M., additional, Molokanova, N., additional, Movchan, S., additional, Obraztsov, V., additional, Okhotnikov, A., additional, Ostankov, A., additional, Polenkevich, I., additional, Potrebenikov, Yu., additional, Sadovskiy, A., additional, Semenov, V., additional, Shkarovskiy, S., additional, Sugonyaev, V., additional, Yushchenko, O., additional, and Zinchenko, A., additional

Published
2024
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20. Measurement of the running of the fine structure constant below 1 GeV with the KLOE Detector

Author

Collaboration, The KLOE-2, Anastasi, A., Babusci, D., Bencivenni, G., Berlowski, M., Bloise, C., Bossi, F., Branchini, P., Budano, A., Balkeståhl, L. Caldeira, Cao, B., Ceradini, F., Ciambrone, P., Curciarello, F., Czerwiński, E., D'Agostini, G., Dané, E., De Leo, V., De Lucia, E., De Santis, A., De Simone, P., Di Cicco, A., Di Domenico, A., Di Salvo, R., Domenici, D., D'Uffizi, A., Fantini, A., Felici, G., Fiore, S., Gajos, A., Gauzzi, P., Giardina, G., Giovannella, S., Graziani, E., Happacher, F., Heijkenskjöld, L., Johansson, T., Kamińska, D., Krzemien, W., Kupsc, A., Loffredo, S., Lukin, P. A., Mandaglio, G., Martini, M., Mascolo, M., Messi, R., Miscetti, S., Morello, G., Moricciani, D., Moskal, P., Papenbrock, M., Passeri, A., Patera, V., del Rio, E. Perez, Ranieri, A., Santangelo, P., Sarra, I., Schioppa, M., Selce, A., Silarski, M., Sirghi, F., Tortora, L., Venanzoni, G., Wiślicki, W., Wolke, M., and Jegerlehner, F.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

We have measured the running of the effective QED coupling constant $\alpha(s)$ in the time-like region $0.6<\sqrt s< 0.975$ GeV with the KLOE detector at DA$\Phi$NE using the Initial State Radiation process $e^+e^-\to\mu^+ \mu^-\gamma$. It represents the first measurement of the running of $\alpha(s)$ in this energy region. Our results show a more than 5$\sigma$ significance of the hadronic contribution to the running of $\alpha(s)$, which is the strongest direct evidence both in time- and space-like regions achieved in a single measurement. By using the $e^+e^-\to\pi^+\pi^-$ cross section measured by KLOE, the real and imaginary part of the shift $\Delta\alpha(s)$ has been extracted. By a fit of the real part of $\Delta\alpha(s)$ and assuming the lepton universality the branching ratio $BR(\omega\to\mu^+\mu^-) = (6.6\pm1.4_{stat}\pm1.7_{syst})\cdot 10^{-5} $ has been determined., Comment: 19 pages, 8 figures, version accepted for publication in Phys. Lett. B

Published
2016
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21. Limit on the production of a new vector boson in $\mathrm{e^+ e^-}\rightarrow {\rm U}\gamma$, U$\rightarrow \pi^+\pi^-$ with the KLOE experiment

Author

Collaboration, KLOE-2, Anastasi, A., Babusci, D., Bencivenni, G., Berlowski, M., Bloise, C., Bossi, F., Branchini, P., Budano, A., Balkeståhl, L. Caldeira, Cao, B., Ceradini, F., Ciambrone, P., Curciarello, F., Czerwinski, E., D'Agostini, G., Danè, E., De Leo, V., De Lucia, E., De Santis, A., De Simone, P., Di Cicco, A., Di Domenico, A., Di Salvo, R., Domenici, D., D'Uffizi, A., Fantini, A., Felici, G., Fiore, S., Gajos, A., Gauzzi, P., Giardina, G., Giovannella, S., Graziani, E., Happacher, F., Heijkenskjöld, L., Andersson, W. Ikegami, Johansson, T., Kamińska, D., Krzemien, W., Kupsc, A., Loffredo, S., Mandaglio, G., Martini, M., Mascolo, M., Messi, R., Miscetti, S., Morello, G., Moricciani, D., Moskal, P., Palladino, A., Papenbrock, M., Passeri, A., Patera, V., del Rio, E. Perez, Ranieri, A., Santangelo, P., Sarra, I., Schioppa, M., Silarski, M., Sirghi, F., Tortora, L., Venanzoni, G., Wiślicki, W., and Wolke, M.

Subjects
High Energy Physics - Experiment
Abstract

The recent interest in a light gauge boson in the framework of an extra U(1) symmetry motivates searches in the mass range below 1 GeV. We present a search for such a particle, the dark photon, in ${\rm e^+ e^-}\rightarrow {\rm U}\gamma$, U$\rightarrow \pi^+\pi^-$ based on 28 million $\mathrm{e^+ e^-} \rightarrow \pi^+ \pi^-\gamma$ events collected at DA$\Phi$NE by the KLOE experiment. The $\pi^+ \pi^-$ production by initial-state radiation compensates for a loss of sensitivity of previous KLOE ${\rm U} \rightarrow \mathrm{e^+ e^-}$, $\mu^+\mu^-$ searches due to the small branching ratios in the $\rho-\omega$ resonance region. We found no evidence for a signal and set a limit at 90\% CL on the mixing strength between the photon and the dark photon, $\varepsilon^2$, in the U mass range between $527$ and $987$~MeV. Above 700 MeV this new limit is more stringent than previous ones., Comment: 6 pages, 9 figures, 1 table, submitted to Phys. Lett. B

Published
2016
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22. ChPT tests at the NA48 and NA62 experiments at CERN

Author

NA48/2, Collaborations, NA62, Ambrosino, F., Antonelli, A., Anzivino, G., Arcidiacono, R., Baldini, W., Balev, S., Batley, J. R., Behler, M., Bifani, S., Biino, C., Bizzeti, A., Bloch-Devaux, B., Bocquet, G., Bolotov, V., Bucci, F., Cabibbo, N., Calvetti, M., Cartiglia, N., Ceccucci, A., Cenci, P., Cerri, C., Cheshkov, C., Chèze, J. B., Clemencic, M., Collazuol, G., Costantini, F., Ramusino, A. Cotta, Coward, D., Cundy, D., Dabrowski, A., D'Agostini, G., Dalpiaz, P., Damiani, C., Danielsson, H., De Beer, M., Dellacasa, G., Derré, J., Dibon, H., Di Filippo, D., DiLella, L., Doble, N., Duk, V., Engelfried, J., Eppard, K., Falaleev, V., Fantechi, R., Fidecaro, M., Fiorini, L., Fiorini, M., Martin, T. Fonseca, Frabetti, P. L., Fucci, A., Gallorini, S., Gatignon, L., Gersabeck, E., Gianoli, A., Giudici, S., Gonidec, A., Goudzovski, E., Lopez, S. Goy, Gushchin, E., Hallgren, B., Hita-Hochgesand, M., Holder, M., Hristov, P., Iacopini, E., Imbergamo, E., Jeitler, M., Kalmus, G., Kekelidze, V., Kleinknecht, K., Kozhuharov, V., Kubischta, W., Kurshetsov, V., Lamanna, G., Lazzeroni, C., Lenti, M., Leonardi, E., Litov, L., Madigozhin, D., Maier, A., Mannelli, I., Marchetto, F., Marel, G., Markytan, M., Marouelli, P., Martini, M., Masetti, L., Massarotti, P., Mazzucato, E., Michetti, A., Mikulec, I., Misheva, M., Molokanova, N., Monnier, E., Moosbrugger, U., Morales, C. Morales, Moulson, M., Movchan, S., Munday, D. J., Napolitano, M., Nappi, A., Neuhofer, G., Norton, A., Numao, T., Obraztsov, V., Palladino, V., Patel, M., Pepe, M., Peters, A., Petrucci, F., Petrucci, M. C., Peyaud, B., Piandani, R., Piccini, M., Pierazzini, G., Polenkevich, I., Popov, I., Potrebenikov, Yu., Raggi, M., Renk, B., Retière, F., Riedler, P., Romano, A., Rubin, P., Ruggiero, G., Salamon, A., Saracino, G., Savrié, M., Scarpa, M., Semenov, V., Sergi, A., Serra, M., Shieh, M., Shkarovskiy, S., Slater, M. W., Sozzi, M., Spadaro, T., Stoynev, S., Swallow, E., Szleper, M., Valdata-Nappi, M., Valente, P., Vallage, B., Velasco, M., Veltri, M., Venditti, S., Wache, M., Wahl, H., Walker, A., Wanke, R., Widhalm, L., Winhart, A., Winston, R., Wood, M. D., Wotton, S. A., Yushchenko, O., Zinchenko, A., and Ziolkowski, M.

Subjects
High Energy Physics - Experiment
Abstract

The NA48/2 Collaboration at CERN has accumulated unprecedented statistics of rare kaon decays in the Ke4 modes: Ke4(+-) ($K^\pm \to \pi^+ \pi^- e^\pm \nu$) and Ke4(00) ($K^\pm \to \pi^0 \pi^0 e^\pm \nu$) with nearly one percent background contamination. The detailed study of form factors and branching rates, based on these data, has been completed recently. The results brings new inputs to low energy strong interactions description and tests of Chiral Perturbation Theory (ChPT) and lattice QCD calculations. In particular, new data support the ChPT prediction for a cusp in the $\pi^0\pi^0$ invariant mass spectrum at the two charged pions threshold for Ke4(00) decay. New final results from an analysis of about 400 $K^\pm \to \pi^\pm \gamma \gamma$ rare decay candidates collected by the NA48/2 and NA62 experiments at CERN during low intensity runs with minimum bias trigger configurations are presented. The results include a model-independent decay rate measurement and fits to ChPT description., Comment: XIIth International Conference on Heavy Quarks and Leptons 2014, Mainz, Germany

Published
2016

23. Precision measurement of the $\eta\to\pi^+\pi^-\pi^0$ Dalitz plot distribution with the KLOE detector

Author

Collaboration, KLOE-2, Anastasi, A., Babusci, D., Bencivenni, G., Berlowski, M., Bloise, C., Bossi, F., Branchini, P., Budano, A., Balkeståhl, L. Caldeira, Cao, B., Ceradini, F., Ciambrone, P., Curciarello, F., Czerwiński, E., D'Agostini, G., Dané, E., De Leo, V., De Lucia, E., De Santis, A., De Simone, P., Di Cicco, A., Di Domenico, A., Di Salvo, R., Domenici, D., D'Uffizi, A., Fantini, A., Felici, G., Fiore, S., Gajos, A., Gauzzi, P., Giardina, G., Giovannella, S., Graziani, E., Happacher, F., Heijkenskjöld, L., Andersson, W. Ikegami, Johansson, T., Kamińska, D., Krzemien, W., Kupsc, A., Loffredo, S., Mandaglio, G., Martini, M., Mascolo, M., Messi, R., Miscetti, S., Morello, G., Moricciani, D., Moskal, P., Papenbrock, M., Passeri, A., Patera, V., del Rio, E. Perez, Ranieri, A., Santangelo, P., Sarra, I., Schioppa, M., Silarski, M., Sirghi, F., Tortora, L., Venanzoni, G., Wiślicki, W., and Wolke, M.

Subjects
High Energy Physics - Experiment, Nuclear Experiment
Abstract

Using $1.6$ fb$^{-1}$ of $e^+ e^-\to\phi\to\eta\gamma$ data collected with the KLOE detector at DA$\Phi$NE, the Dalitz plot distribution for the $\eta \to \pi^+ \pi^- \pi^0$ decay is studied with the world's largest sample of $\sim 4.7 \cdot 10^6$ events. The Dalitz plot density is parametrized as a polynomial expansion up to cubic terms in the normalized dimensionless variables $X$ and $Y$. The experiment is sensitive to all charge conjugation conserving terms of the expansion, including a $gX^2Y$ term. The statistical uncertainty of all parameters is improved by a factor two with respect to earlier measurements., Comment: 11 pages, 9 figures, supplement: an ascii table

Published
2016

24. Measurement of the $\phi \to \pi^0 e^+e^-$ transition form factor with the KLOE detector

Author

Collaboration, KLOE-2, Anastasi, A., Babusci, D., Bencivenni, G., Berlowski, M., Bloise, C., Bossi, F., Branchini, P., Budano, A., Balkeståhl, L. Caldeira, Cao, B., Ceradini, F., Ciambrone, P., Curciarello, F., Czerwiński, E., D'Agostini, G., Danè, E., De Leo, V., De Lucia, E., De Santis, A., De Simone, P., Di Cicco, A., Di Domenico, A., Di Salvo, R., Domenici, D., D'Uffizi, A., Fantini, A., Felici, G., Fiore, S., Gajos, A., Gauzzi, P., Giardina, G., Giovannella, S., Graziani, E., Happacher, F., Heijkenskjöld, L., Andersson, W. Ikegami, Johansson, T., Kamińska, D., Krzemien, W., Kupsc, A., Loffredo, S., Mandaglio, G., Martini, M., Mascolo, M., Messi, R., Miscetti, S., Morello, G., Moricciani, D., Moskal, P., Papenbrock, M., Passeri, A., Patera, V., del Rio, E. Perez, Ranieri, A., Santangelo, P. Salabura P., Sarra, I., Schioppa, M., Silarski, M., Sirghi, F., Tortora, L., Venanzoni, G., Wiślicki, W., and Wolke, M.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

A measurement of the vector to pseudoscalar conversion decay $\phi \to \pi^0 e^+e^-$ with the KLOE experiment is presented. A sample of $\sim 9500$ signal events was selected from a data set of 1.7 fb$^{-1}$ of $e^+e^-$ collisions at $\sqrt{s} \sim m_{\phi}$ collected at the DA$\Phi$NE $e^+e^-$ collider. These events were used to obtain the first measurement of the transition form factor $| F_{\phi \pi^0}(q^2) |$ and a new measurement of the branching ratio of the decay: $\rm{BR}\,(\phi \to \pi^0 e^+e^-) = (\,1.35 \pm 0.05^{\,\,+0.05}_{\,\,-0.10}\,) \times 10 ^{-5}$. The result improves significantly on previous measurements and is in agreement with theoretical predictions., Comment: 13 pages, 4 figures; matches published version

Published
2016
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25. Limit on the production of a low-mass vector boson in $\mathrm{e}^{+}\mathrm{e}^{-} \to \mathrm{U}\gamma$, $\mathrm{U} \to \mathrm{e}^{+}\mathrm{e}^{-}$ with the KLOE experiment

Author

Anastasi, A., Babusci, D., Bencivenni, G., Berlowski, M., Bloise, C., Bossi, F., Branchini, P., Budano, A., Balkeståhl, L. Caldeira, Cao, B., Ceradini, F., Ciambrone, P., Curciarello, F., Czerwiński, E., D'Agostini, G., Danè, E., De Leo, V., De Lucia, E., De Santis, A., De Simone, P., Di Cicco, A., Di Domenico, A., Di Salvo, R., Domenici, D., D'Uffizi, A., Fantini, A., Felici, G., Fiore, S., Gajos, A., Gauzzi, P., Giardina, G., Giovannella, S., Graziani, E., Happacher, F., Heijkenskjöld, L., Andersson, W. Ikegami, Johansson, T., Kamińska, D., Krzemien, W., Kupsc, A., Loffredo, S., Mandaglio, G., Martini, M., Mascolo, M., Messi, R., Miscetti, S., Morello, G., Moricciani, D., Moskal, P., Palladino, A., Papenbrock, M., Passeri, A., Patera, V., del Rio, E. Perez, Ranieri, A., Santangelo, P., Sarra, I., Schioppa, M., Silarski, M., Sirghi, F., Tortora, L., Venanzoni, G., Wiślicki, W., and Wolke, M.

Subjects
High Energy Physics - Experiment
Abstract

The existence of a new force beyond the Standard Model is compelling because it could explain several striking astrophysical observations which fail standard interpretations. We searched for the light vector mediator of this dark force, the $\mathrm{U}$ boson, with the KLOE detector at the DA$\Phi$NE $\mathrm{e}^{+}\mathrm{e}^{-}$ collider. Using an integrated luminosity of 1.54 fb$^{-1}$, we studied the process $\mathrm{e}^{+}\mathrm{e}^{-} \to \mathrm{U}\gamma$, with $\mathrm{U} \to \mathrm{e}^{+}\mathrm{e}^{-}$, using radiative-return to search for a resonant peak in the dielectron invariant-mass distribution. We did not find evidence for a signal, and set a 90\%~CL upper limit on the mixing strength between the Standard Model photon and the dark photon, $\varepsilon^2$, at $10^{-6}$--$10^{-4}$ in the 5--520~MeV/c$^2$ mass range.

Published
2015
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26. Erratum to: Precision tests of quantum mechanics and CPT symmetry with entangled neutral kaons at KLOE

Author

Babusci, D., Berlowski, M., Bloise, C., Bossi, F., Branchini, P., Budano, A., Cao, B., Ceradini, F., Ciambrone, P., Curciarello, F., Czerwiński, E., D’Agostini, G., D’Amico, R., Danè, E., De Leo, V., De Lucia, E., De Santis, A., De Simone, P., Di Cicco, A., Di Domenico, A., Diociaiuti, E., Domenici, D., D’Uffizi, A., Fantini, A., Fantini, G., Fermani, P., Fiore, S., Gajos, A., Gauzzi, P., Giovannella, S., Graziani, E., Ivanov, V. L., Johansson, T., Kang, X., Kisielewska-Kamińska, D., Kozyrev, E. A., Krzemien, W., Kupsc, A., Lukin, P. A., Mandaglio, G., Martini, M., Messi, R., Miscetti, S., Moricciani, D., Moskal, P., Passeri, A., Patera, V., Perez del Rio, E., Santangelo, P., Schioppa, M., Selce, A., Silarski, M., Sirghi, F., Solodov, E. P., Tortora, L., Venanzoni, G., Wiślicki, W., and Wolke, M.

Published
2022
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27. Precision tests of quantum mechanics and CPT symmetry with entangled neutral kaons at KLOE

Author

Babusci, D., Berlowski, M., Bloise, C., Bossi, F., Branchini, P., Budano, A., Cao, B., Ceradini, F., Ciambrone, P., Curciarello, F., Czerwiński, E., D’Agostini, G., D’Amico, R., Danè, E., De Leo, V., De Lucia, E., De Santis, A., De Simone, P., Di Cicco, A., Di Domenico, A., Diociaiuti, E., Domenici, D., D’Uffizi, A., Fantini, A., Fantini, G., Fermani, P., Fiore, S., Gajos, A., Gauzzi, P., Giovannella, S., Graziani, E., Ivanov, V. L., Johansson, T., Kang, X., Kisielewska-Kamińska, D., Kozyrev, E. A., Krzemien, W., Kupsc, A., Lukin, P. A., Mandaglio, G., Martini, M., Messi, R., Miscetti, S., Moricciani, D., Moskal, P., Passeri, A., Patera, V., Perez del Rio, E., Santangelo, P., Schioppa, M., Selce, A., Silarski, M., Sirghi, F., Solodov, E. P., Tortora, L., Venanzoni, G., Wiślicki, W., and Wolke, M.

Published
2022
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28. Prospects for $K^+ \to \pi^+ \nu \bar{ \nu }$ at CERN in NA62

Author

Rinella, G. Aglieri, Aliberti, R., Ambrosino, F., Angelucci, B., Antonelli, A., Anzivino, G., Arcidiacono, R., Azhinenko, I., Balev, S., Bendotti, J., Biagioni, A., Biino, C., Bizzeti, A., Blazek, T., Blik, A., Bloch-Devaux, B., Bolotov, V., Bonaiuto, V., Bragadireanu, M., Britton, D., Britvich, G., Brook, N., Bucci, F., Buescher, V., Butin, F., Capitolo, E., Capoccia, C., Capussela, T., Carassiti, V., Cartiglia, N., Cassese, A., Catinaccio, A., Cecchetti, A., Ceccucci, A., Cenci, P., Cerny, V., Cerri, C., Chikilev, O., Ciaranfi, R., Collazuol, G., Cooke, P., Cooper, P., Corradi, G., Gil, E. Cortina, Costantini, F., Ramusino, A. Cotta, Coward, D., D'Agostini, G., Dainton, J., Dalpiaz, P., Danielsson, H., Degrange, J., De Simone, N., Di Filippo, D., Di Lella, L., Dixon, N., Doble, N., Duk, V., Elsha, V., Engelfried, J., Enik, T., Falaleev, V., Fantechi, R., Federici, L., Fiorini, M., Fry, J., Fucci, A., Fulton, L., Gallorini, S., Gatignon, L., Gianoli, A., Giudici, S., Glonti, L., Martins, A. Goncalves, Gonnella, F., Goudzovski, E., Guida, R., Gushchin, E., Hahn, F., Hallgren, B., Heath, H., Herman, F., Hutchcroft, D., Iacopini, E., Jamet, O., Jarron, P., Kampf, K., Kaplon, J., Karjavin, V., Kekelidze, V., Kholodenko, S., Khoriauli, G., Khudyakov, A., Kiryushin, Yu., Kleinknecht, K., Kluge, A., Koval, M., Kozhuharov, V., Krivda, M., Kudenko, Y., Kunze, J., Lamanna, G., Lazzeroni, C., Leitner, R., Lenci, R., Lenti, M., Leonardi, E., Lichard, P., Lietava, R., Litov, L., Lomidze, D., Lonardo, A., Lurkin, N., Madigozhin, D., Maire, G., Makarov, A., Mannelli, I., Mannocchi, G., Mapelli, A., Marchetto, F., Massarotti, P., Massri, K., Matak, P., Mazza, G., Menichetti, E., Mirra, M., Misheva, M., Molokanova, N., Morant, J., Morel, M., Moulson, M., Movchan, S., Munday, D., Napolitano, M., Newson, F., Norton, A., Noy, M., Nuessle, G., Obraztsov, V., Padolski, S., Page, R., Palladino, V., Pardons, A., Pedreschi, E., Pepe, M., Gomez, F. Perez, Perrin-Terrin, M., Petrov, P., Petrucci, F., Piandani, R., Piccini, M., Pietreanu, D., Pinzino, J., Pivanti, M., Polenkevich, I., Popov, I., Potrebenikov, Yu., Protopopescu, D., Raffaelli, F., Raggi, M., Riedler, P., Romano, A., Rubin, P., Ruggiero, G., Russo, V., Ryjov, V., Salamon, A., Salina, G., Samsonov, V., Santovetti, E., Saracino, G., Sargeni, F., Schifano, S., Semenov, V., Sergi, A., Serra, M., Shkarovskiy, S., Sotnikov, A., Sougonyaev, V., Sozzi, M., Spadaro, T., Spinella, F., Staley, R., Statera, M., Sutcliffe, P., Szilasi, N., Tagnani, D., Valdata-Nappi, M., Valente, P., Vasile, M., Vassilieva, V., Velghe, B., Veltri, M., Venditti, S., Vormstein, M., Wahl, H., Wanke, R., Wertelaers, P., Winhart, A., Winston, R., Wrona, B., Yushchenko, O., Zamkovsky, M., and Zinchenko, A.

Subjects
High Energy Physics - Experiment
Abstract

The NA62 experiment will begin taking data in 2015. Its primary purpose is a 10% measurement of the branching ratio of the ultrarare kaon decay $K^+ \to \pi^+ \nu \bar{ \nu }$, using the decay in flight of kaons in an unseparated beam with momentum 75 GeV/c.The detector and analysis technique are described here., Comment: 8 pages for proceedings of 50 Years of CPV

Published
2014

29. Recent NA48/2 and NA62 results

Author

Ambrosino, F., Antonelli, A., Anzivino, G., Arcidiacono, R., Baldini, W., Balev, S., Batley, J. R., Behler, M., Bifani, S., Biino, C., Bizzeti, A., Bloch-Devaux, B., Bocquet, G., Bolotov, V., Bucci, F., Cabibbo, N., Calvetti, M., Cartiglia, N., Ceccucci, A., Cenci, P., Cerri, C., Cheshkov, C., Cheze, J. B., Clemencic, M., Collazuol, G., Costantini, F., Ramusino, A. Cotta, Coward, D., Cundy, D., Dabrowski, A., D'Agostini, G., Dalpiaz, P., Damiani, C., Danielsson, H., De Beer, M., Dellacasa, G., Derre, J., Dibon, H., Di Filippo, D., DiLella, L., Doble, N., Duk, V., Engelfried, J., Eppard, K., Falaleev, V., Fantechi, R., Fidecaro, M., Fiorini, L., Fiorini, M., Martin, T. Fonseca, Frabetti, P. L., Fucci, A., Gallorini, S., Gatignon, L., Gersabeck, E., Gianoli, A., Giudici, S., Gonidec, A., Goudzovski, E., Lopez, S. Goy, Gushchin, E., Hallgren, B., Hita-Hochgesand, M., Holder, M., Hristov, P., Iacopini, E., Imbergamo, E., Jeitler, M., Kalmus, G., Kekelidze, V., Kleinknecht, K., Kozhuharov, V., Kubischta, W., Kurshetsov, V., Lamanna, G., Lazzeroni, C., Lenti, M., Leonardi, E., Litov, L., Madigozhin, D., Maier, A., Mannelli, I., Marchetto, F., Marel, G., Markytan, M., Marouelli, P., Martini, M., Masetti, L., Massarotti, P., Mazzucato, E., Michetti, A., Mikulec, I., Misheva, M., Molokanova, N., Monnier, E., Moosbrugger, U., Morales, C. Morales, Moulson, M., Movchan, S., Munday, D. J., Napolitano, M., Nappi, A., Neuhofer, G., Norton, A., Numao, T., Obraztsov, V., Palladino, V., Patel, M., Pepe, M., Peters, A., Petrucci, F., Petrucci, M. C., Peyaud, B., Piandani, R., Piccini, M., Pierazzini, G., Polenkevich, I., Popov, I., Potrebenikov, Yu., Raggi, M., Renk, B., Retiere, F., Riedler, P., Romano, A., Rubin, P., Ruggiero, G., Salamon, A., Saracino, G., Savrie, M., Scarpa, M., Semenov, V., Sergi, A., Serra, M., Shieh, M., Shkarovskiy, S., Slater, M. W., Sozzi, M., Spadaro, T., Stoynev, S., Swallow, E., Szleper, M., Valdata-Nappi, M., Valente, P., Vallage, B., Velasco, M., Veltri, M., Venditti, S., Wache, M., Wahl, H., Walker, A., Wanke, R., Widhalm, L., Winhart, A., Winston, R., Wood, M. D., Wotton, S. A., Yushchenko, O., Zinchenko, A., and Ziolkowski, M.

Subjects
High Energy Physics - Experiment
Abstract

The NA48/2 Collaboration at CERN has accumulated and analysed unprecedented statistics of rare kaon decays in the $K_{e4}$ modes: $K_{e4}(+-)$ ($K^\pm \to \pi^+ \pi^- e^\pm \nu$) and $K_{e4}(00)$ ($K^\pm \to \pi^0 \pi^0 e^\pm \nu$) with nearly one percent background contamination. It leads to the improved measurement of branching fractions and detailed form factor studies. New final results from the analysis of 381 $K^\pm \to \pi^\pm \gamma \gamma$ rare decay candidates collected by the NA48/2 and NA62 experiments at CERN are presented. The results include a decay rate measurement and fits to Chiral Perturbation Theory (ChPT) description., Comment: Prepared for the Proceedings of "Moriond QCD and High Energy Interactions. March 22-29 2014." conference

Published
2014

30. Further studies of the photoproduction of isolated photons with a jet at HERA

Author

ZEUS Collaboration, Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aggarwal, R., Antonelli, S., Arslan, O., Aushev, V., Aushev, Y., Bachynska, O., Barakbaev, A. N., Bartosik, N., Behnke, O., Behr, J., Behrens, U., Bertolin, A., Bhadra, S., Bloch, I., Bokhonov, V., Boos, E. G., Borras, K., Brock, I., Brugnera, R., Bruni, A., Brzozowska, B., Bussey, P. J., Caldwell, A., Capua, M., Catterall, C. D., Chwastowski, J., Ciborowski, J., Ciesielski, R., Cooper-Sarkar, A. M., Corradi, M., Corriveau, F., D'Agostini, G., Dementiev, R. K., Devenish, R. C. E., Dolinska, G., Drugakov, V., Dusini, S., Ferrando, J., Figiel, J., Foster, B., Gach, G., Garfagnini, A., Geiser, A., Gizhko, A., Gladilin, L. K., Gogota, O., Golubkov, Yu. A., Grebenyuk, J., Gregor, I., Grzelak, G., Gueta, O., Guzik, M., Hain, W., Hartner, G., Hochman, D., Hori, R., Ibrahim, Z. A., Iga, Y., Ishitsuka, M., Iudin, A., Januschek, F., Kadenko, I., Kananov, S., Kanno, T., Karshon, U., Kaur, M., Kaur, P., Khein, L. A., Kisielewska, D., Klanner, R., Klein, U., Kondrashova, N., Kononenko, O., Korol, Ie., Korzhavina, I. A., Kotanski, A., Kotz, U., Kovalchuk, N., Kowalski, H., Kuprash, O., Kuze, M., Levchenko, B. B., Levy, A., Libov, V., Limentani, S., Lisovyi, M., Lobodzinska, E., Lohmann, W., Lohr, B., Lohrmann, E., Longhin, A., Lontkovskyi, D., Lukina, O. Yu., Maeda, J., Makarenko, I., Malka, J., Martin, J. F., Mergelmeyer, S., Idris, F. Mohamad, Mujkic, K., Myronenko, V., Nagano, K., Nigro, A., Nobe, T., Notz, D., Nowak, R. J., Olkiewicz, K., Onishchuk, Yu., Paul, E., Perlanski, W., Perrey, H., Pokrovskiy, N. S., Proskuryakov, A. S., Przybycien, M., Raval, A., Roloff, P., Rubinsky, I., Ruspa, M., Samojlov, V., Saxon, D. H., Schioppa, M., Schmidke, W. B., Schneekloth, U., Schorner-Sadenius, T., Schwartz, J., Shcheglova, L. M., Shevchenko, R., Shkola, O., Singh, I., Skillicorn, I. O., Slominski, W., Sola, V., Solano, A., Spiridonov, A., Stanco, L., Stefaniuk, N., Stern, A., Stewart, T. P., Stopa, P., Sztuk-Dambietz, J., Szuba, D., Szuba, J., Tassi, E., Temiraliev, T., Tokushuku, K., Tomaszewska, J., Trofymov, A., Trusov, V., Tsurugai, T., Turcato, M., Turkot, O., Tymieniecka, T., Verbytskyi, A., Viazlo, O., Walczak, R., Abdullah, W. A. T. Wan, Wichmann, K., Wing, M., Wolf, G., Yamada, S., Yamazaki, Y., Zakharchuk, N., Zarnecki, A. F., Zawiejski, L., Zenaiev, O., Zhautykov, B. O., Zhmak, N., and Zotkin, D. S.

Subjects
High Energy Physics - Experiment
Abstract

In this extended analysis using the ZEUS detector at HERA, the photoproduction of isolated photons together with a jet is measured for different ranges of the fractional photon energy, $x_\gamma^{\mathrm{meas}}$, contributing to the photon-jet final state. Cross sections are evaluated in the photon transverse-energy and pseudorapidity ranges $6 < E_T^{\gamma} < 15$ GeV and $-0.7 < \eta^{\gamma} < 0.9$, and for jet transverse-energy and pseudorapidity ranges $4 < E_T^{\rm jet} < 35$ GeV and $-1.5 < \eta^{\rm jet} < 1.8$, for an integrated luminosity of 374 $\mathrm{pb}^{-1}$. The kinematic observables studied comprise the transverse energy and pseudorapidity of the photon and the jet, the azimuthal difference between them, the fraction of proton energy taking part in the interaction, and the difference between the pseudorapidities of the photon and the jet. Higher-order theoretical calculations are compared to the results., Comment: 26 pages, 7 figures. Updated with small corrections from journal referee and journal reference

Published
2014

31. Measurement of beauty and charm production in deep inelastic scattering at HERA and measurement of the beauty-quark mass

Author

ZEUS collaboration, Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aggarwal, R., Antonelli, S., Arslan, O., Aushev, V., Aushev, Y., Bachynska, O., Barakbaev, A. N., Bartosik, N., Behnke, O., Behr, J., Behrens, U., Bertolin, A., Bhadra, S., Bloch, I., Bokhonov, V., Boos, E. G., Borras, K., Brock, I., Brugnera, R., Bruni, A., Brzozowska, B., Bussey, P. J., Caldwell, A., Capua, M., Catterall, C. D., Chwastowski, J., Ciborowski, J., Ciesielski, R., Cooper-Sarkar, A. M., Corradi, M., Corriveau, F., D'Agostini, G., Dementiev, R. K., Devenish, R. C. E., Dolinska, G., Drugakov, V., Dusini, S., Ferrando, J., Figiel, J., Foster, B., Gach, G., Garfagnini, A., Geiser, A., Gizhko, A., Gladilin, L. K., Gogota, O., Golubkov, Yu. A., Grebenyuk, J., Gregor, I., Grzelak, G., Gueta, O., Guzik, M., Hain, W., Hartner, G., Hochman, D., Hori, R., Ibrahim, Z. A., Iga, Y., Ishitsuka, M., Iudin, A., Januschek, F., Kadenko, I., Kananov, S., Kanno, T., Karshon, U., Kaur, M., Kaur, P., Khein, L. A., Kisielewska, D., Klanner, R., Klein, U., Kondrashova, N., Kononenko, O., Korol, Ie., Korzhavina, I. A., Kotański, A., Kötz, U., Kovalchuk, N., Kowalski, H., Kuprash, O., Kuze, M., Levchenko, B. B., Levy, A., Libov, V., Limentani, S., Lisovyi, M., Lobodzinska, E., Lohmann, W., Löhr, B., Lohrmann, E., Longhin, A., Lontkovskyi, D., Lukina, O. Yu., Maeda, J., Makarenko, I., Malka, J., Martin, J. F., Mergelmeyer, S., Idris, F. Mohamad, Mujkic, K., Myronenko, V., Nagano, K., Nigro, A., Nobe, T., Notz, D., Nowak, R. J., Olkiewicz, K., Onishchuk, Yu., Paul, E., Perlański, W., Perrey, H., Pokrovskiy, N. S., Proskuryakov, A. S., Przybycień, M., Raval, A., Roloff, P., Rubinsky, I., Ruspa, M., Samojlov, V., Saxon, D. H., Schioppa, M., Schmidke, W. B., Schneekloth, U., Schörner-Sadenius, T., Schwartz, J., Shcheglova, L. M., Shehzadi, R., Shevchenko, R., Shkola, O., Singh, I., Skillicorn, I. O., Słomiński, W., Sola, V., Solano, A., Spiridonov, A., Stanco, L., Stefaniuk, N., Stern, A., Stewart, T. P., Stopa, P., Sztuk-Dambietz, J., Szuba, D., Szuba, J., Tassi, E., Temiraliev, T., Tokushuku, K., Tomaszewska, J., Trofymov, A., Trusov, V., Tsurugai, T., Turcato, M., Turkot, O., Tymieniecka, T., Verbytskyi, A., Viazlo, O., Walczak, R., Abdullah, W. A. T. Wan, Wichmann, K., Wing, M., Wolf, G., Yamada, S., Yamazaki, Y., Zakharchuk, N., Żarnecki, A. F., Zawiejski, L., Zenaiev, O., Zhautykov, B. O., Zhmak, N., and Zotkin, D. S.

Subjects
High Energy Physics - Experiment
Abstract

The production of beauty and charm quarks in ep interactions has been studied with the ZEUS detector at HERA for exchanged four-momentum squared 5 < Q^2 < 1000 GeV^2 using an integrated luminosity of 354 pb^{-1}. The beauty and charm content in events with at least one jet have been extracted using the invariant mass of charged tracks associated with secondary vertices and the decay-length significance of these vertices. Differential cross sections as a function of Q^2, Bjorken x, jet transverse energy and pseudorapidity were measured and compared with next-to-leading-order QCD calculations. The beauty and charm contributions to the proton structure functions were extracted from the double-differential cross section as a function of x and Q^2. The running beauty-quark mass, m_b at the scale m_b, was determined from a QCD fit at next-to-leading order to HERA data for the first time and found to be 4.07 \pm 0.14 (fit} ^{+0.01}_{-0.07} (mod.) ^{+0.05}_{-0.00} (param.) ^{+0.08}_{-0.05} (theo) GeV., Comment: 63 pages, 14 figures, 20 tables. Version accepted by JHEP

Published
2014
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32. Measurement of D* photoproduction at three different centre-of-mass energies at HERA

Author

ZEUS Collaboration, Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aggarwal, R., Antonelli, S., Arslan, O., Aushev, V., Aushev, Y., Bachynska, O., Barakbaev, A. N., Bartosik, N., Behnke, O., Behr, J., Behrens, U., Bertolin, A., Bhadra, S., Bloch, I., Bokhonov, V., Boos, E. G., Borras, K., Brock, I., Brugnera, R., Bruni, A., Brzozowska, B., Bussey, P. J., Caldwell, A., Capua, M., Catterall, C. D., Chwastowski, J., Ciborowski, J., Ciesielski, R., Cooper-Sarkar, A. M., Corradi, M., Corriveau, F., D'Agostini, G., Dementiev, R. K., Devenish, R. C. E., Dolinska, G., Drugakov, V., Dusini, S., Ferrando, J., Figiel, J., Foster, B., Gach, G., Garfagnini, A., Geiser, A., Gizhko, A., Gladilin, L. K., Gogota, O., Golubkov, Yu. A., Grebenyuk, J., Gregor, I., Grzelak, G., Gueta, O., Guzik, M., Hain, W., Hartner, G., Hochman, D., Hori, R., Ibrahim, Z. A., Iga, Y., Ishitsuka, M., Iudin, A., Januschek, F., Kadenko, I., Kananov, S., Kanno, T., Karshon, U., Kaur, M., Kaur, P., Khein, L. A., Kisielewska, D., Klanner, R., Klein, U., Kondrashova, N., Kononenko, O., Korol, Ie., Korzhavina, I. A., Kotanski, A., Kotz, U., Kovalchuk, N., Kowalski, H., Kuprash, O., Kuze, M., Levchenko, B. B., Levy, A., Libov, V., Limentani, S., Lisovyi, M., Lobodzinska, E., Lohmann, W., Lohr, B., Lohrmann, E., Longhin, A., Lontkovskyi, D., Lukina, O. Yu., Maeda, J., Makarenko, I., Malka, J., Martin, J. F., Mergelmeyer, S., Idris, F. Mohamad, Mujkic, K., Myronenko, V., Nagano, K., Nigro, A., Nobe, T., Notz, D., Nowak, R. J., Olkiewicz, K., Onishchuk, Yu., Paul, E., Perlanski, W., Perrey, H., Pokrovskiy, N. S., Proskuryakov, A. S., Przybycien, M., Raval, A., Roloff, P., Rubinsky, I., Ruspa, M., Samojlov, V., Saxon, D. H., Schioppa, M., Schmidke, W. B., Schneekloth, U., Schorner-Sadenius, T., Schwartz, J., Shcheglova, L. M., Shevchenko, R., Shkola, O., Singh, I., Skillicorn, I. O., Slominski, W., Sola, V., Solano, A., Spiridonov, A., Stanco, L., Stefaniuk, N., Stern, A., Stewart, T. P., Stopa, P., Sztuk-Dambietz, J., Szuba, D., Szuba, J., Tassi, E., Temiraliev, T., Tokushuku, K., Tomaszewska, J., Trofymov, A., Trusov, V., Tsurugai, T., Turcato, M., Turkot, O., Tymieniecka, T., Verbytskyi, A., Viazlo, O., Walczak, R., Abdullah, W. A. T. Wan, Wichmann, K., Wing, M., Wolf, G., Yamada, S., Yamazaki, Y., Zakharchuk, N., Zarnecki, A. F., Zawiejski, L., Zenaiev, O., Zhautykov, B. O., Zhmak, N., and Zotkin, D. S.

Subjects
High Energy Physics - Experiment
Abstract

The photoproduction of $D^{*\pm}$ mesons has been measured with the ZEUS detector at HERA at three different ep centre-of-mass energies, $\sqrt{s}$, of 318, 251 and 225 GeV. For each data set, $D^*$ mesons were required to have transverse momentum, $p_T^{D^*}$, and pseudorapidity, $\eta^{D^*}$, in the ranges $1.9 < p_T^{D^*} < 20$ GeV and $|\eta^{D^*}|<1.6$. The events were required to have a virtuality of the incoming photon, $Q^2$, of less than 1 GeV$^2$. The dependence on $\sqrt{s}$ was studied by normalising to the high-statistics measurement at $\sqrt{s} =318$ GeV. This led to the cancellation of a number of systematic effects both in data and theory. Predictions from next-to-leading-order QCD describe the $\sqrt{s}$ dependence of the data well., Comment: 17 pages, 7 figures, accepted by JHEP. Updated version includes comments from journal referee

Published
2014

33. Deep inelastic cross-section measurements at large y with the ZEUS detector at HERA

Author

ZEUS Collaboration, Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aggarwal, R., Antonelli, S., Arslan, O., Aushev, V., Aushev, Y., Bachynska, O., Barakbaev, A. N., Bartosik, N., Behnke, O., Behr, J., Behrens, U., Bertolin, A., Bhadra, S., Bloch, I., Bokhonov, V., Boos, E. G., Borras, K., Brock, I., Brugnera, R., Bruni, A., Brzozowska, B., Bussey, P. J., Caldwell, A., Capua, M., Catterall, C. D., Chwastowski, J., Ciborowski, J., Ciesielski, R., Cooper-Sarkar, A. M., Corradi, M., Corriveau, F., D'Agostini, G., Dementiev, R. K., Devenish, R. C. E., Dolinska, G., Drugakov, V., Dusini, S., Ferrando, J., Figiel, J., Foster, B., Gach, G., Garfagnini, A., Geiser, A., Gizhko, A., Gladilin, L. K., Gogota, O., Golubkov, Yu. A., Grebenyuk, J., Gregor, I., Grzelak, G., Gueta, O., Guzik, M., Hain, W., Hartner, G., Hochman, D., Hori, R., Ibrahim, Z. A., Iga, Y., Ishitsuka, M., Iudin, A., Januschek, F., Kadenko, I., Kananov, S., Kanno, T., Karshon, U., Kaur, M., Kaur, P., Khein, L. A., Kisielewska, D., Klanner, R., Klein, U., Kondrashova, N., Kononenko, O., Korol, Ie., Korzhavina, I. A., Kotanski, A., Kotz, U., Kovalchuk, N., Kowalski, H., Kuprash, O., Kuze, M., Levchenko, B. B., Levy, A., Libov, V., Limentani, S., Lisovyi, M., Lobodzinska, E., Lohmann, W., Lohr, B., Lohrmann, E., Longhin, A., Lontkovskyi, D., Lukina, O. Yu., Maeda, J., Makarenko, I., Malka, J., Martin, J. F., Mergelmeyer, S., Idris, F. Mohamad, Mujkic, K., Myronenko, V., Nagano, K., Nigro, A., Nobe, T., Notz, D., Nowak, R. J., Olkiewicz, K., Onishchuk, Yu., Paul, E., Perlanski, W., Perrey, H., Pokrovskiy, N. S., Proskuryakov, A. S., Przybycien, M., Raval, A., Roloff, P., Rubinsky, I., Ruspa, M., Samojlov, V., Saxon, D. H., Schioppa, M., Schmidke, W. B., Schneekloth, U., Schorner-Sadenius, T., Schwartz, J., Shcheglova, L. M., Shevchenko, R., Shkola, O., Singh, I., Skillicorn, I. O., Slominski, W., Sola, V., Solano, A., Spiridonov, A., Stanco, L., Stefaniuk, N., Stern, A., Stewart, T. P., Stopa, P., Sztuk-Dambietz, J., Szuba, D., Szuba, J., Tassi, E., Temiraliev, T., Tokushuku, K., Tomaszewska, J., Trofymov, A., Trusov, V., Tsurugai, T., Turcato, M., Turkot, O., Tymieniecka, T., Verbytskyi, A., Viazlo, O., Walczak, R., Abdullah, W. A. T. Wan, Wichmann, K., Wing, M., Wolf, G., Yamada, S., Yamazaki, Y., Zakharchuk, N., Zarnecki, A. F., Zawiejski, L., Zenaiev, O., Zhautykov, B. O., Zhmak, N., and Zotkin, D. S.

Subjects
High Energy Physics - Experiment
Abstract

The reduced cross sections for $e^{+}p$ deep inelastic scattering have been measured with the ZEUS detector at HERA at three different centre-of-mass energies, $318$, $251$ and $225$ GeV. The cross sections, measured double differentially in Bjorken $x$ and the virtuality, $Q^2$, were obtained in the region $0.13\ \leq\ y\ \leq\ 0.75$, where $y$ denotes the inelasticity and $5\ \leq\ Q^2\ \leq\ 110$ GeV$^2$. The proton structure functions $F_2$ and $F_L$ were extracted from the measured cross sections., Comment: 39 pages, 9 figures. To be submitted to Phys. Lett

Published
2014
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34. Measurement of neutral current e+/-p cross sections at high Bjorken x with the ZEUS detector

Author

ZEUS Collaboration, Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aggarwal, R., Antonelli, S., Arslan, O., Aushev, V., Aushev, Y., Bachynska, O., Barakbaev, A. N., Bartosik, N., Behnke, O., Behr, J., Behrens, U., Bertolin, A., Bhadra, S., Bloch, I., Bokhonov, V., Boos, E. G., Borras, K., Brock, I., Brugnera, R., Bruni, A., Brzozowska, B., Bussey, P. J., Caldwell, A., Capua, M., Catterall, C. D., Chwastowski, J., Ciborowski, J., Ciesielski, R., Cooper-Sarkar, A. M., Corradi, M., Corriveau, F., Agostini, G. D, Dementiev, R. K., Devenish, R. C. E., Dolinska, G., Drugakov, V., Dusini, S., Ferrando, J., Figiel, J., Foster, B., Gach, G., Garfagnini, A., Geiser, A., Gizhko, A., Gladilin, L. K., Gogota, O., Golubkov, Yu. A., Grebenyuk, J., Gregor, I., Grzelak, G., Gueta, O., Guzik, M., Hain, W., Hartner, G., Hochman, D., Hori, R., Ibrahim, Z. A., Iga, Y., Ishitsuka, M., Iudin, A., Januschek, F., Kadenko, I., Kananov, S., Kanno, T., Karshon, U., Kaur, M., Kaur, P., Khein, L. A., Kisielewska, D., Klanner, R., Klein, U., Kondrashova, N., Kononenko, O., Korol, Ie., Korzhavina, I. A., Kotanski, A., Koetz, U., Kovalchuk, N., Kowalski, H., Kuprash, O., Kuze, M., Levchenko, B. B., Levy, A., Libov, V., Limentani, S., Lisovyi, M., Lobodzinska, E., Lohmann, W., Loehr, B., Lohrmann, E., Longhin, A., Lontkovskyi, D., Lukina, O. Yu., Maeda, J., Makarenko, I., Malka, J., Martin, J. F., Mergelmeyer, S., Idris, F. Mohamad, Mujkic, K., Myronenko, V., Nagano, K., Nigro, A., Nobe, T., Notz, D., Nowak, R. J., Olkiewicz, K., Onishchuk, Yu., Paul, E., Perlanski, W., Perrey, H., Pokrovskiy, N. S., Proskuryakov, A. S., Przybycien, M., Raval, A., Roloff, P., Rubinsky, I., Ruspa, M., Samojlov, V., Saxon, D. H., Schioppa, M., Schmidke, W. B., Schneekloth, U., Schoerner-Sadenius, T., Schwartz, J., Shcheglova, L. M., Shevchenko, R., Shkola, O., Singh, I., Skillicorn, I. O., Slominski, W., Sola, V., Solano, A., Spiridonov, A., Stanco, L., Stefaniuk, N., Stern, A., Stewart, T. P., Stopa, P., Sztuk-Dambietz, J., Szuba, D., Szuba, J., Tassi, E., Temiraliev, T., Tokushuku, K., Tomaszewska, J., Trofymov, A., Trusov, V., Tsurugai, T., Turcato, M., Turkot, O., Tymieniecka, T., Verbytskyi, A., Viazlo, O., Walczak, R., Abdullah, W. A. T. Wan, Wichmann, K., Wing, M., Wolf, G., Yamada, S., Yamazaki, Y., Zakharchuk, N., Zarnecki, A. F., Zawiejski, L., Zenaiev, O., Zhautykov, B. O., Zhmak, N., and Zotkin, D. S.

Subjects
High Energy Physics - Experiment
Abstract

The neutral current e+/-p cross section has been measured up to values of Bjorken x of approximately 1 with the ZEUS detector at HERA using an integrated luminosity of 187 inv. pb of e-p and 142 inv. pb of e+p collisions at sqrt(s) = 318GeV. Differential cross sections in x and Q2, the exchanged boson virtuality, are presented for Q2 geq 725GeV2. An improved reconstruction method and greatly increased amount of data allows a finer binning in the high-x region of the neutral current cross section and leads to a measurement with much improved precision compared to a similar earlier analysis. The measurements are compared to Standard Model expectations based on a variety of recent parton distribution functions., Comment: 39 pages, 9 figures

Published
2013
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36. Production of Z0 bosons in elastic and quasi-elastic ep collisions at HERA

Author

ZEUS collaboration, Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aggarwal, R., Antonelli, S., Antonioli, P., Antonov, A., Arneodo, M., Arslan, O., Aushev, V., Aushev, Y., Bachynska, O., Bamberger, A., Barakbaev, A. N., Barbagli, G., Bari, G., Barreiro, F., Bartosik, N., Bartsch, D., Basile, M., Behnke, O., Behr, J., Behrens, U., Bellagamba, L., Bertolin, A., Bhadra, S., Bindi, M., Blohm, C., Bokhonov, V., Bołd, T., Bondarenko, K., Boos, E. G., Borras, K., Boscherini, D., Bot, D., Brock, I., Brownson, E., Brugnera, R., Brümmer, N., Bruni, A., Bruni, G., Brzozowska, B., Bussey, P. J., Bylsma, B., Caldwell, A., Capua, M., Carlin, R., Catterall, C. D., Chekanov, S., Chwastowski, J., Ciborowski, J., Ciesielski, R., Cifarelli, L., Cindolo, F., Contin, A., Cooper-Sarkar, A. M., Coppola, N., Corradi, M., Corriveau, F., Costa, M., D'Agostini, G., Corso, F. Dal, del Peso, J., Dementiev, R. K., De Pasquale, S., Derrick, M., Devenish, R. C. E., Dobur, D., Dolgoshein, B. A., Dolinska, G., Doyle, A. T., Drugakov, V., Durkin, L. S., Dusini, S., Eisenberg, Y., Ermolov, P. F., Eskreys, A., Fang, S., Fazio, S., Ferrando, J., Ferrero, M. I., Figiel, J., Foster, B., Gach, G., Galas, A., Gallo, E., Garfagnini, A., Geiser, A., Gialas, I., Gizhko, A., Gladilin, L. K., Gladkov, D., Glasman, C., Gogota, O., Golubkov, Yu. A., Göttlicher, P., Grabowska-Bołd, I., Grebenyuk, J., Gregor, I., Grigorescu, G., Grzelak, G., Gueta, O., Guzik, M., Gwenlan, C., Haas, T., Hain, W., Hamatsu, R., Hart, J. C., Hartmann, H., Hartner, G., Hilger, E., Hochman, D., Hori, R., Hüttmann, A., Ibrahim, Z. A., Iga, Y., Ingbir, R., Ishitsuka, M., Jakob, H. -P., Januschek, F., Jones, T. W., Jüngst, M., Kadenko, I., Kahle, B., Kananov, S., Kanno, T., Karshon, U., Karstens, F., Katkov, I. I., Kaur, M., Kaur, P., Keramidas, A., Khein, L. A., Kim, J. Y., Kisielewska, D., Kitamura, S., Klanner, R., Klein, U., Koffeman, E., Kondrashova, N., Kononenko, O., Kooijman, P., Korol, Ie., Korzhavina, I. A., Kotański, A., Kötz, U., Kowalski, H., Kuprash, O., Kuze, M., Lee, A., Levchenko, B. B., Levy, A., Libov, V., Limentani, S., Ling, T. Y., Lisovyi, M., Lobodzinska, E., Lohmann, W., Löhr, B., Lohrmann, E., Long, K. R., Longhin, A., Lontkovskyi, D., Lukina, O. Yu., Maeda, J., Magill, S., Makarenko, I., Malka, J., Mankel, R., Margotti, A., Marini, G., Martin, J. F., Mastroberardino, A., Mattingly, M. C. K., Melzer-Pellmann, I. -A., Mergelmeyer, S., Miglioranzi, S., Idris, F. Mohamad, Monaco, V., Montanari, A., Morris, J. D., Mujkic, K., Musgrave, B., Nagano, K., Namsoo, T., Nania, R., Nigro, A., Ning, Y., Nobe, T., Notz, D., Nowak, R. J., Nuncio-Quiroz, A. E., Oh, B. Y., Okazaki, N., Olkiewicz, K., Onishchuk, Yu., Papageorgiu, K., Parenti, A., Paul, E., Pawlak, J. M., Pawlik, B., Pelfer, P. G., Pellegrino, A., Perlański, W., Perrey, H., Piotrzkowski, K., Pluciński, P., Pokrovskiy, N. S., Polini, A., Proskuryakov, A. S., Przybycień, M., Raval, A., Reeder, D. D., Reisert, B., Ren, Z., Repond, J., Ri, Y. D., Robertson, A., Roloff, P., Rubinsky, I., Ruspa, M., Sacchi, R., Samson, U., Sartorelli, G., Savin, A. A., Saxon, D. H., Schioppa, M., Schlenstedt, S., Schleper, P., Schmidke, W. B., Schneekloth, U., Schönberg, V., Schörner-Sadenius, T., Schwartz, J., Sciulli, F., Shcheglova, L. M., Shehzadi, R., Shimizu, S., Singh, I., Skillicorn, I. O., Słomiński, W., Smith, W. H., Sola, V., Solano, A., Son, D., Sosnovtsev, V., Spiridonov, A., Stadie, H., Stanco, L., Stefaniuk, N., Stern, A., Stewart, T. P., Stifutkin, A., Stopa, P., Suchkov, S., Susinno, G., Suszycki, L., Sztuk-Dambietz, J., Szuba, D., Szuba, J., Tapper, A. D., Tassi, E., Terrón, J., Theedt, T., Tiecke, H., Tokushuku, K., Tomaszewska, J., Trusov, V., Tsurugai, T., Turcato, M., Turkot, O., Tymieniecka, T., Vázquez, M., Verbytskyi, A., Viazlo, O., Vlasov, N. N., Walczak, R., Abdullah, W. A. T. Wan, Whitmore, J. J., Wichmann, K., Wiggers, L., Wing, M., Wlasenko, M., Wolf, G., Wolfe, H., Wrona, K., Yagües-Molina, A. G., Yamada, S., Yamazaki, Y., Yoshida, R., Youngman, C., Zabiegalov, O., Żarnecki, A. F., Zawiejski, L., Zenaiev, O., Zeuner, W., Zhautykov, B. O., Zhmak, N., Zichichi, A., Zolkapli, Z., and Zotkin, D. S.

Subjects
High Energy Physics - Experiment
Abstract

The production of Z0 bosons in the reaction ep -> eZ0p*, where p* stands for a proton or a low-mass nucleon resonance, has been studied in ep collisions at HERA using the ZEUS detector. The analysis is based on a data sample collected between 1996 and 2007, amounting to 496 pb-1 of integrated luminosity. The Z0 was measured in the hadronic decay mode. The elasticity of the events was ensured by a cut on eta_max < 3.0, where eta_max is the maximum pseudorapidity of energy deposits in the calorimeter defined with respect to the proton beam direction. A signal was observed at the Z0 mass. The cross section of the reaction ep -> eZ0p* was measured to be sigma(ep -> eZ0p*) = 0.13 +/- 0.06 (stat.) +/- 0.01 (syst.) pb, in agreement with the Standard Model prediction of 0.16 pb. This is the first measurement of Z0 production in ep collisions., Comment: 13 pages, 3 figures, submitted to PLB

Published
2012
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37. Measurement of high-Q2 neutral current deep inelastic e+p scattering cross sections with a longitudinally polarised positron beam at HERA

Author

ZEUS Collaboration, Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aggarwal, R., Antonelli, S., Antonioli, P., Antonov, A., Arneodo, M., Arslan, O., Aushev, V., Aushev, Y., Bachynska, O., Bamberger, A., Barakbaev, A. N., Barbagli, G., Bari, G., Barreiro, F., Bartosik, N., Bartsch, D., Basile, M., Behnke, O., Behr, J., Behrens, U., Bellagamba, L., Bertolin, A., Bhadra, S., Bindi, M., Blohm, C., Bokhonov, V., Bold, T., Bondarenko, K., Boos, E. G., Borras, K., Boscherini, D., Bot, D., Brock, I., Brownson, E., Brugnera, R., Brummer, N., Bruni, A., Bruni, G., Brzozowska, B., Bussey, P. J., Bylsma, B., Caldwell, A., Capua, M., Carlin, R., Catterall, C. D., Chekanov, S., Chwastowski, J., Ciborowski, J., Ciesielski, R., Cifarelli, L., Cindolo, F., Contin, A., Cooper-Sarkar, A. M., Coppola, N., Corradi, M., Corriveau, F., Costa, M., D'Agostini, G., Corso, F. Dal, del Peso, J., Dementiev, R. K., De Pasquale, S., Derrick, M., Devenish, R. C. E., Dobur, D., Dolgoshein, B. A., Dolinska, G., Doyle, A. T., Drugakov, V., Durkin, L. S., Dusini, S., Eisenberg, Y., Ermolov, P. F., Eskreys, A., Fang, S., Fazio, S., Ferrando, J., Ferrero, M. I., Figiel, J., Foster, B., Gach, G., Galas, A., Gallo, E., Garfagnini, A., Geiser, A., Gialas, I., Gizhko, A., Gladilin, L. K., Gladkov, D., Glasman, C., Gogota, O., Golubkov, Yu. A., Gottlicher, P., Grabowska-Bold, I., Grebenyuk, J., Gregor, I., Grigorescu, G., Grzelak, G., Gueta, O., Guzik, M., Gwenlan, C., Haas, T., Hain, W., Hamatsu, R., Hart, J. C., Hartmann, H., Hartner, G., Hilger, E., Hochman, D., Hori, R., Huttmann, A., Ibrahim, Z. A., Iga, Y., Ingbir, R., Ishitsuka, M., Jakob, H. -P., Januschek, F., Jones, T. W., Jungst, M., Kadenko, I., Kahle, B., Kananov, S., Kanno, T., Karshon, U., Karstens, F., Katkov, I. I., Kaur, M., Kaur, P., Keramidas, A., Khein, L. A., Kim, J. Y., Kisielewska, D., Kitamura, S., Klanner, R., Klein, U., Koffeman, E., Kondrashova, N., Kononenko, O., Kooijman, P., Korol, Ie., Korzhavina, I. A., Kotanski, A., Kotz, U., Kowalski, H., Kuprash, O., Kuze, M., Lee, A., Levchenko, B. B., Levy, A., Libov, V., Limentani, S., Ling, T. Y., Lisovyi, M., Lobodzinska, E., Lohmann, W., Lohr, B., Lohrmann, E., Long, K. R., Longhin, A., Lontkovskyi, D., Lukina, O. Yu., Maeda, J., Magill, S., Makarenko, I., Malka, J., Mankel, R., Margotti, A., Marini, G., Martin, J. F., Mastroberardino, A., Mattingly, M. C. K., Melzer-Pellmann, I. -A., Mergelmeyer, S., Miglioranzi, S., Idris, F. Mohamad, Monaco, V., Montanari, A., Morris, J. D., Mujkic, K., Musgrave, B., Nagano, K., Namsoo, T., Nania, R., Nigro, A., Ning, Y., Nobe, T., Notz, D., Nowak, R. J., Nuncio-Quiroz, A. E., Oh, B. Y., Okazaki, N., Olkiewicz, K., Onishchuk, Yu., Papageorgiu, K., Parenti, A., Paul, E., Pawlak, J. M., Pawlik, B., Pelfer, P. G., Pellegrino, A., Perlanski, W., Perrey, H., Piotrzkowski, K., Plucinski, P., Pokrovskiy, N. S., Polini, A., Proskuryakov, A. S., Przybycien, M., Raval, A., Reeder, D. D., Reisert, B., Ren, Z., Repond, J., Ri, Y. D., Robertson, A., Roloff, P., Rubinsky, I., Ruspa, M., Sacchi, R., Samson, U., Sartorelli, G., Savin, A. A., Saxon, D. H., Schioppa, M., Schlenstedt, S., Schleper, P., Schmidke, W. B., Schneekloth, U., Schonberg, V., Schorner-Sadenius, T., Schwartz, J., Sciulli, F., Shcheglova, L. M., Shehzadi, R., Shimizu, S., Singh, I., Skillicorn, I. O., Slominski, W., Smith, W. H., Sola, V., Solano, A., Son, D., Sosnovtsev, V., Spiridonov, A., Stadie, H., Stanco, L., Stefaniuk, N., Stern, A., Stewart, T. P., Stifutkin, A., Stopa, P., Suchkov, S., Susinno, G., Suszycki, L., Sztuk-Dambietz, J., Szuba, D., Szuba, J., Tapper, A. D., Tassi, E., Terron, J., Theedt, T., Tiecke, H., Tokushuku, K., Tomaszewska, J., Trusov, V., Tsurugai, T., Turcato, M., Turkot, O., Tymieniecka, T., Vazquez, M., Verbytskyi, A., Viazlo, O., Vlasov, N. N., Walczak, R., Abdullah, W. A. T. Wan, Whitmore, J. J., Wichmann, K., Wiggers, L., Wing, M., Wlasenko, M., Wolf, G., Wolfe, H., Wrona, K., Yagues-Molina, A. G., Yamada, S., Yamazaki, Y., Yoshida, R., Youngman, C., Zabiegalov, O., Zarnecki, A. F. ., Zawiejski, L., Zenaiev, O., Zeuner, W., Zhautykov, B. O., Zhmak, N., Zichichi, A., Zolkapli, Z., and Zotkin, D. S.

Subjects
High Energy Physics - Experiment
Abstract

Measurements of neutral current cross sections for deep inelastic scattering in e+p collisions at HERA with a longitudinally polarised positron beam are presented. The single-differential cross-sections d(sigma)/dQ2, d(sigma)/dx and d(sigma)/dy and the reduced cross-section were measured in the kinematic region Q2 > 185 GeV2 and y < 0.9, where Q2 is the four-momentum transfer squared, x the Bjorken scaling variable, and y the inelasticity of the interaction. The measurements were performed separately for positively and negatively polarised positron beams. The measurements are based on an integrated luminosity of 135.5 pb-1 collected with the ZEUS detector in 2006 and 2007 at a centre-of-mass energy of 318 GeV. The structure functions F3 and F3(gamma)Z were determined by combining the e+p results presented in this paper with previously published e-p neutral current results. The asymmetry parameter A+ is used to demonstrate the parity violation predicted in electroweak interactions. The measurements are well described by the predictions of the Standard Model., Comment: 46 pages, 10 figures and 15 tables. Version updated after journal review and including full list of authors

Published
2012
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38. The large-angle photon veto system for the NA62 experiment at the CERN SPS

Author

Ambrosino, F., Angelucci, B., Antonelli, A., Costantini, F., D'Agostini, G., Di Filippo, D., Fantechi, R., Gallorini, S., Giudici, S., Leonardi, E., Mannelli, I., Massarotti, P., Moulson, M., Napolitano, M., Palladino, V., Rafaelli, F., Raggi, M., Saracino, G., Serra, M., Spadaro, T., Valente, P., and Venditti, S.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

The branching ratio (BR) for the decay K^+ \to \pi^+\nu\bar{\nu} is a sensitive probe for new physics. The NA62 experiment at the CERN SPS will measure this BR to within about 10%. To reject the background from dominant kaon decays with final state photons, the large-angle photon vetoes (LAVs) must detect photons of energy as low as 200 MeV with an inefficiency of less than 10^{-4}. The LAV detectors make use of lead glass blocks recycled from the OPAL electromagnetic calorimeter barrel. We describe the mechanical design and challenges faced during construction, the characterization of the lead glass blocks and solutions adopted for monitoring their performance, and the development of front-end electronics to allow simultaneous time and energy measurements over an extended dynamic range using the time over-threshold technique. Our results are based on test-beam data and are reproduced by a detailed Monte Carlo simulation that includes the readout chain., Comment: LaTeX, 7 pages, 11 attached .eps files. Prepared for the Proceedings of the XVth International Conference on Calorimetry in High Energy Physics (Calor 2012), Santa Fe, NM, 4-8 June 2012

Published
2012
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39. Inclusive-jet photoproduction at HERA and determination of alphas

Author

ZEUS Collaboration, Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aggarwal, R., Antonelli, S., Antonioli, P., Antonov, A., Arneodo, M., Aushev, V., Aushev, Y., Bachynska, O., Bamberger, A., Barakbaev, A. N., Barbagli, G., Bari, G., Barreiro, F., Bartosik, N., Bartsch, D., Basile, M., Behnke, O., Behr, J., Behrens, U., Bellagamba, L., Bertolin, A., Bhadra, S., Bindi, M., Blohm, C., Bokhonov, V., Bold, T., Bondarenko, K., Boos, E. G., Borras, K., Boscherini, D., Bot, D., Brock, I., Brownson, E., Brugnera, R., Brummer, N., Bruni, A., Bruni, G., Brzozowska, B., Bussey, P. J., Bylsma, B., Caldwell, A., Capua, M., Carlin, R., Catterall, C. D., Chekanov, S., Chwastowski, J., Ciborowski, J., Ciesielski, R., Cifarelli, L., Cindolo, F., Contin, A., Cooper-Sarkar, A. M., Coppola, N., Corradi, M., Corriveau, F., Costa, M., D'Agostini, G., Corso, F. Dal, del Peso, J., Dementiev, R. K., De Pasquale, S., Derrick, M., Devenish, R. C. E., Dobur, D., Dolgoshein, B. A., Dolinska, G., Doyle, A. T., Drugakov, V., Durkin, L. S., Dusini, S., Eisenberg, Y., Ermolov, P. F., Eskreys, A., Fang, S., Fazio, S., Ferrando, J., Ferrero, M. I., Figiel, J., Forrest, M., Foster, B., Gach, G., Galas, A., Gallo, E., Garfagnini, A., Geiser, A., Gialas, I., Gizhko, A., Gladilin, L. K., Gladkov, D., Glasman, C., Gogota, O., Golubkov, Yu. A., Gottlicher, P., Grabowska-Bold, I., Grebenyuk, J., Gregor, I., Grigorescu, G., Grzelak, G., Gueta, O., Guzik, M., Gwenlan, C., Haas, T., Hain, W., Hamatsu, R., Hart, J. C., Hartmann, H., Hartner, G., Hilger, E., Hochman, D., Hori, R., Horton, K., Huttmann, A., Ibrahim, Z. A., Iga, Y., Ingbir, R., Ishitsuka, M., Jakob, H. -P., Januschek, F., Jones, T. W., Jungst, M., Kadenko, I., Kahle, B., Kananov, S., Kanno, T., Karshon, U., Karstens, F., Katkov, I. I., Kaur, M., Kaur, P., Keramidas, A., Khein, L. A., Kim, J. Y., Kisielewska, D., Kitamura, S., Klanner, R., Klein, U., Koffeman, E., Kondrashova, N., Kononeko, O., Kooijman, P., Korol, Ie., Korzhavina, I. A., Kotanski, A., Kotz, U., Kowalski, H., Kuprash, O., Kuze, M., Lee, A., Levchenko, B. B., Levy, A., Libov, V., Limentani, S., Ling, T. Y., Lisovyi, M., Lobodzinska, E., Lohmann, W., Lohr, B., Lohrmann, E., Long, K. R., Longhin, A., Lontkovskyi, D., Lukina, O. Yu., Maeda, J., Magill, S., Makarenko, I., Malka, J., Mankel, R., Margotti, A., Marini, G., Martin, J. F., Mastroberardino, A., Mattingly, M. C. K., Melzer-Pellmann, I. -A., Mergelmeyer, S., Miglioranzi, S., Idris, F. Mohamad, Monaco, V., Montanari, A., Morris, J. D., Mujkic, K., Musgrave, B., Nagano, K., Namsoo, T., Nania, R., Nigro, A., Ning, Y., Nobe, T., Noor, U., Notz, D., Nowak, R. J., Nuncio-Quiroz, A. E., Oh, B. Y., Okazaki, N., Oliver, K., Olkiewicz, K., Onishchuk, Yu., Papageorgiu, K., Parenti, A., Paul, E., Pawlak, J. M., Pawlik, B., Pelfer, P. G., Pellegrino, A., Perlanski, W., Perrey, H., Piotrzkowski, K., Plucinski, P., Pokrovskiy, N. S., Polini, A., Proskuryakov, A. S., Przybycien, M., Raval, A., Reeder, D. D., Reisert, B., Ren, Z., Repond, J., Ri, Y. D., Robertson, A., Roloff, P., Rubinsky, I., Ruspa, M., Sacchi, R., Samson, U., Sartorelli, G., Savin, A. A., Saxon, D. H., Schioppa, M., Schlenstedt, S., Schleper, P., Schmidke, W. B., Schneekloth, U., Schonberg, V., Schorner-Sadenius, T., Schwartz, J., Sciulli, F., Shcheglova, L. M., Shehzadi, R., Shimizu, S., Singh, I., Skillicorn, I. O., Slominski, W., Smith, W. H., Sola, V., Solano, A., Son, D., Sosnovtsev, V., Spiridonov, A., Stadie, H., Stanco, L., Stefaniuk, N., Stern, A., Stewart, T. P., Stifutkin, A., Stopa, P., Suchkov, S., Susinno, G., Suszycki, L., Sztuk-Dambietz, J., Szuba, D., Szuba, J., Tapper, A. D., Tassi, E., Terron, J., Theedt, T., Tiecke, H., Tokushuku, K., Tomaszewska, J., Trusov, V., Tsurugai, T., Turcato, M., Turkot, O., Tymieniecka, T., Vazquez, M., Verbytskyi, A., Viazlo, O., Vlasov, N. N., Walczak, R., Abdullah, W. A. T. Wan, Whitmore, J. J., Wiggers, L., Wing, M., Wlasenko, M., Wolf, G., Wolfe, H., Wrona, K., Yagues-Molina, A. G., Yamada, S., Yamazaki, Y., Yoshida, R., Youngman, C., Zabiegalov, O., Zarnecki, A. F., Zawiejski, L., Zenaiev, O., Zeuner, W., Zhautykov, B. O., Zhmak, N., Zhou, C., Zichichi, A., Zolkapli, Z., and Zotkin, D. S.

Subjects
High Energy Physics - Experiment
Abstract

Inclusive-jet cross sections have been measured in the reaction ep->e+jet+X for photon virtuality Q2 < 1 GeV2 and gamma-p centre-of-mass energies in the region 142 < W(gamma-p) < 293 GeV with the ZEUS detector at HERA using an integrated luminosity of 300 pb-1. Jets were identified using the kT, anti-kT or SIScone jet algorithms in the laboratory frame. Single-differential cross sections are presented as functions of the jet transverse energy, ETjet, and pseudorapidity, etajet, for jets with ETjet > 17 GeV and -1 < etajet < 2.5. In addition, measurements of double-differential inclusive-jet cross sections are presented as functions of ETjet in different regions of etajet. Next-to-leading-order QCD calculations give a good description of the measurements, except for jets with low ETjet and high etajet. The influence of non-perturbative effects not related to hadronisation was studied. Measurements of the ratios of cross sections using different jet algorithms are also presented; the measured ratios are well described by calculations including up to O(alphas2) terms. Values of alphas(Mz) were extracted from the measurements and the energy-scale dependence of the coupling was determined. The value of alphas(Mz) extracted from the measurements based on the kT jet algorithm is alphas(Mz) = 0.1206 +0.0023 -0.0022 (exp.) +0.0042 -0.0035 (th.); the results from the anti-kT and SIScone algorithms are compatible with this value and have a similar precision., Comment: 53 pages, 17 figures

Published
2012
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40. Probably a discovery: Bad mathematics means rough scientific communication

Author

D'Agostini, G.

Subjects
Physics - Data Analysis, Statistics and Probability, High Energy Physics - Phenomenology, Mathematics - History and Overview, Physics - Popular Physics, Physics - Physics and Society
Abstract

According to the media, in spring of this year the experiment CDF at Fermilab has made most likely ("this result has a 99.7 percent chance of being correct", Discovery News) a great discovery ("the most significant in physics in half a century", NYT). However, since the very beginning, practically all particle physics experts did not believe that was the case. This is the last of a quite long series of fake claims based on trivial mistakes in the probabilistic reasoning. The main purpose of this note is to invite everybody, but especially journalists and general public, most times innocent victims of misinformation of this kind, to mistrust claims not explicitly reported in terms of how much we should believe something, under well stated conditions and assumptions. (A last minute appendix has been added, with comments on the recent news concerning the Higgs at LHC.), Comment: 21 pages, 2 figures, note based on lectures at the University of Perugia, 15-16 April 2011 and at MAPSES School in Lecce, 23-25 November 2011

Published
2011

41. The NA62 LAV front-end electronics

Author

Antonelli, A., Corradi, G., Moulson, M., Paglia, C., Raggi, M., Spadaro, T., Tagnani, D., Ambrosino, F., Di Filippo, D., Massarotti, P., Napolitano, M., Saracino, G., Angelucci, B., Costantini, F., Fantechi, R., Gallorini, S., Giudici, S., Mannelli, I., Raffaelli, F., Venditti, S., D'Agostini, G., Leonardi, E., Palladino, V., Serra, M., and Valente, P.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

The branching ratio for the decay $K^+ \to \pi^+\nu\bar{\nu}$ is sensitive to new physics; the NA62 experiment will measure it to within about 10%. To reject the dominant background from channels with final state photons, the large-angle vetoes (LAVs) must detect particles with better than 1 ns time resolution and 10% energy resolution over a very large energy range. Our custom readout board uses a time-over-threshold discriminator coupled to a TDC as a straightforward solution to satisfy these requirements. A prototype of the readout system was extensively tested together with the ANTI-A2 large angle veto module at CERN in summer 2010., Comment: prepared for the TWEPP 2011 conference proceedings

Published
2011
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42. Exclusive electroproduction of two pions at HERA

Author

ZEUS collaboration, Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aggarwal, R., Antonelli, S., Antonioli, P., Antonov, A., Arneodo, M., Ashery, D., Aushev, V., Aushev, Y., Bachynska, O., Bamberger, A., Barakbaev, A. N., Barbagli, G., Bari, G., Barreiro, F., Bartosik, N., Bartsch, D., Basile, M., Behnke, O., Behr, J., Behrens, U., Bellagamba, L., Bertolin, A., Bhadra, S., Bindi, M., Blohm, C., Bokhonov, V., Bołd, T., Bondarenko, K., Boos, E. G., Borras, K., Boscherini, D., Bot, D., Brock, I., Brownson, E., Brugnera, R., Brümmer, N., Bruni, A., Bruni, G., Brzozowska, B., Bussey, P. J., Bylsma, B., Caldwell, A., Capua, M., Carlin, R., Catterall, C. D., Chekanov, S., Chwastowski, J., Ciborowski, J., Ciesielski, R., Cifarelli, L., Cindolo, F., Contin, A., Cooper-Sarkar, A. M., Coppola, N., Corradi, M., Corriveau, F., Costa, M., D'Agostini, G., Corso, F. Dal, del Peso, J., Dementiev, R. K., De Pasquale, S., Derrick, M., Devenish, R. C. E., Dobur, D., Dolgoshein, B. A., Dolinska, G., Doyle, A. T., Drugakov, V., Durkin, L. S., Dusini, S., Eisenberg, Y., Ermolov, P. F., Eskreys, A., Fang, S., Fazio, S., Ferrando, J., Ferrero, M. I., Figiel, J., Forrest, M., Foster, B., Gach, G., Galas, A., Gallo, E., Garfagnini, A., Geiser, A., Gialas, I., Gladilin, L. K., Gladkov, D., Glasman, C., Gogota, O., Golubkov, Yu. A., Göttlicher, P., Grabowska-Bołd, I., Grebenyuk, J., Gregor, I., Grigorescu, G., Grzelak, G., Gueta, O., Gurvich, E., Guzik, M., Gwenlan, C., Haas, T., Hain, W., Hamatsu, R., Hart, J. C., Hartmann, H., Hartner, G., Hilger, E., Hochman, D., Hori, R., Horton, K., Hüttmann, A., Ibrahim, Z. A., Iga, Y., Ingbir, R., Ishitsuka, M., Jakob, H. -P., Januschek, F., Jones, T. W., Jüngst, M., Kadenko, I., Kahle, B., Kananov, S., Kanno, T., Karshon, U., Karstens, F., Katkov, I. I., Kaur, M., Kaur, P., Keramidas, A., Khein, L. A., Kim, J. Y., Kisielewska, D., Kitamura, S., Klanner, R., Klein, U., Koffeman, E., Kooijman, P., Korol, Ie., Korzhavina, I. A., Kotański, A., Kötz, U., Kowalski, H., Kuprash, O., Kuze, M., Lee, A., Levchenko, B. B., Levy, A., Libov, V., Limentani, S., Ling, T. Y., Lisovyi, M., Lobodzinska, E., Lohmann, W., Löhr, B., Lohrmann, E., Long, K. R., Longhin, A., Lontkovskyi, D., Lukina, O. Yu., Maeda, J., Magill, S., Makarenko, I., Malka, J., Mankel, R., Margotti, A., Marini, G., Martin, J. F., Mastroberardino, A., Mattingly, M. C. K., Melzer-Pellmann, I. -A., Mergelmeyer, S., Miglioranzi, S., Idris, F. Mohamad, Monaco, V., Montanari, A., Morris, J. D., Mujkic, K., Musgrave, B., Nagano, K., Namsoo, T., Nania, R., Nigro, A., Ning, Y., Nobe, T., Noor, U., Notz, D., Nowak, R. J., Nuncio-Quiroz, A. E., Oh, B. Y., Okazaki, N., Oliver, K., Olkiewicz, K., Onishchuk, Yu., Papageorgiu, K., Parenti, A., Paul, E., Pawlak, J. M., Pawlik, B., Pelfer, P. G., Pellegrino, A., Perlański, W., Perrey, H., Piotrzkowski, K., Pluciński, P., Pokrovskiy, N. S., Polini, A., Proskuryakov, A. S., Przybycień, M., Raval, A., Reeder, D. D., Reisert, B., Ren, Z., Repond, J., Ri, Y. D., Robertson, A., Roloff, P., Rubinsky, I., Ruspa, M., Sacchi, R., Salii, A., Samson, U., Sartorelli, G., Savin, A. A., Saxon, D. H., Schioppa, M., Schlenstedt, S., Schleper, P., Schmidke, W. B., Schneekloth, U., Schönberg, V., Schörner-Sadenius, T., Schwartz, J., Sciulli, F., Shcheglova, L. M., Shehzadi, R., Shimizu, S., Singh, I., Skillicorn, I. O., Słomiński, W., Smith, W. H., Sola, V., Solano, A., Son, D., Sosnovtsev, V., Spiridonov, A., Stadie, H., Stanco, L., Stern, A., Stewart, T. P., Stifutkin, A., Stopa, P., Suchkov, S., Susinno, G., Suszycki, L., Sztuk-Dambietz, J., Szuba, D., Szuba, J., Tapper, A. D., Tassi, E., Terrón, J., Theedt, T., Tiecke, H., Tokushuku, K., Tomalak, O., Tomaszewska, J., Tsurugai, T., Turcato, M., Tymieniecka, T., Vázquez, M., Verbytskyi, A., Viazlo, O., Vlasov, N. N., Volynets, O., Walczak, R., Abdullah, W. A. T. Wan, Whitmore, J. J., Wiggers, L., Wing, M., Wlasenko, M., Wolf, G., Wolfe, H., Wrona, K., Yagües-Molina, A. G., Yamada, S., Yamazaki, Y., Yoshida, R., Youngman, C., Żarnecki, A. F., Zawiejski, L., Zenaiev, O., Zeuner, W., Zhautykov, B. O., Zhmak, N., Zhou, C., Zichichi, A., Zolkapli, Z., Zolko, M., and Zotkin, D. S.

Subjects
High Energy Physics - Experiment
Abstract

The exclusive electroproduction of two pions in the mass range 0.4 < M{\pi}{\pi} < 2.5 GeV has been studied with the ZEUS detector at HERA using an integrated luminosity of 82 pb-1. The analysis was carried out in the kinematic range of 2 < Q2 < 80 GeV2, 32 < W < 180 GeV and |t| < 0.6 GeV2, where Q2 is the photon virtuality, W is the photon-proton centre-of-mass energy and t is the squared four-momentum transfer at the proton vertex. The two-pion invariant-mass distribution is interpreted in terms of the pion electromagnetic form factor, |F(M{\pi}{\pi})|, assuming that the studied mass range includes the contributions of the {\rho}, {\rho}' and {\rho}" vector-meson states. The masses and widths of the resonances were obtained and the Q2 dependence of the cross-section ratios {\sigma}({\rho}' \rightarrow {\pi}{\pi})/{\sigma}({\rho}) and {\sigma}({\rho}" \rightarrow {\pi}{\pi})/{\sigma}({\rho}) was extracted. The pion form factor obtained in the present analysis is compared to that obtained in e+e- \rightarrow {\pi}+{\pi}-., Comment: 24 pages, including 11 figures

Published
2011
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43. The Large-Angle Photon Veto System for the NA62 Experiment at CERN

Author

Ambrosino, F., Angelucci, B., Antonelli, A., Costantini, F., D'Agostini, G., Di Filippo, D., Fantechi, R., Gallorini, S., Giudici, S., Leonardi, E., Mannelli, I., Massarotti, P., Moulson, M., Napolitano, M., Palladino, V., Rafaelli, F., Raggi, M., Saracino, G., Serra, M., Spadaro, T., Valente, P., and Venditti, S.

Subjects
Physics - Instrumentation and Detectors
Abstract

The branching ratio (BR) for the decay K^+ \rightarrow \pi^+ \nu \bar{\nu} is a sensitive probe for new physics. The NA62 experiment at the CERN SPS will measure this BR to within about 10%. To reject the dominant background from channels with final state photons, the large-angle vetoes (LAVs) must detect photons of energy as low as 200 MeV with an inefficiency of less than 10^-4, as well as provide energy and time measurements with resolutions of 10% and 1 ns for 1 GeV photons. The LAV detectors make creative reuse of lead glass blocks recycled from the OPAL electromagnetic calorimeter barrel. We describe the mechanical design and challenges faced during construction, the characterization of the lead glass blocks and solutions adopted for monitoring their performance, and the development of front-end electronics to allow simultaneous time and energy measurements over an extended dynamic range using the time-over-threshold technique. Our results are based on test-beam data and are reproduced by a detailed Monte Carlo simulation that includes the readout chain., Comment: 8 pages, 13 figures. Prepared for the Conference Record of the IEEE Nuclear Science Symposium, Valencia, Spain, October 2011

Published
2011

44. Search for single-top production in ep collisions at HERA

Author

ZEUS Collaboration, Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aggarwal, R., Antonelli, S., Antonioli, P., Antonov, A., Arneodo, M., Aushev, V., Aushev, Y., Bachynska, O., Bamberger, A., Barakbaev, A. N., Barbagli, G., Bari, G., Barreiro, F., Bartosik, N., Bartsch, D., Basile, M., Behnke, O., Behr, J., Behrens, U ., Bellagamba, L., Bertolin, A., Bhadra, S., Bindi, M., Blohm, C., Bokhonov, V., Bołd, T., Bondarenko, K., Boos, E. G., Borras, K., ini, D. Boscher, Bot, D., Brock, I., Brownson, E., Brugnera, R., Brümmer, N., Bruni, A., Bruni, G., Brzozowska, B., Bussey, P. J., Bylsma, B., Caldwell, A., Capua, M., Carlin, R., Catterall, C. D., Chekanov, S., Chwastowski, J., Ciborowski, J., Ciesielski, R ., Cifarelli, L., Cindolo, F., Contin, A., Cooper-Sarkar, A. M., Coppola, N., Corradi, M., Corriveau, F., Costa, M., D'Agostini, G., Corso, F. Dal, del Peso, J., Dementiev, R. K., De Pasquale, S., Derrick, M., Devenish, R. C. E., Dobur, D., Dolgoshein, B. A., Dolinska, G., Doyle, A. T., Drugakov, V., Durkin, L. S., Dusini, S., Eisenberg, Y., Ermolov, P. F., Eskreys, A., Fang, S., Fazio, S., Ferrando, J., Ferrero, M. I., Figiel, J., Forrest, M., Foster, B., Gach, G., Galas, A., Gallo, E., Garfagnini, A., Geiser, A., Gialas, I., Gladilin, L. K., Gladkov, D., Glasman, C., Gogota, O., Golubkov, Yu. A., Göttlicher, P., Grabowska-Bołd, I., Grebenyuk, J., Gregor, I., Grigorescu, G., Grzelak, G., Gueta, O., Guzik, M., Gwenlan, C., Haas, T., Hain, W., Hamatsu, R., Hart, J. C., Hartmann, H., Hartner, G., Hilger, E., Hochman, D., Hori, R., Horton, K., Hüttmann, A., Ibrahim, Z. A., Iga, Y., Ingbir, R., Ishitsuka, M., Jakob, H. -P., Januschek, F., Jones, T. W., Jüngst, M., Kadenko, I., Kahle, B., Kananov, S., Kanno, T., Karshon, U., Karstens, F., Katkov, I. I., Kaur, M., Kaur, P., Keramidas, A., Khein, L. A., Kim, J. Y., Kisielewska, D., Kitamura, S., Klanner, R., Klein, U., Koffeman, E., Kooijman, P., Korol, Ie., Korzhavina, I. A., Kotański, A., Kötz, U., Kowalski, H., Kuprash, O., Kuze, M., Lee, A., Levchenko, B. B., Levy, A., Libov, V., Limentani, S., Ling, T. Y., Lisovyi, M., Lobodzinska, E., Lohmann, W., Löhr, B., Lohrmann, E., Long, K. R., Longhin, A., Lontkovskyi, D., Lukina, O. Yu., Maeda, J., Magill, S., Makarenko, I., Malka, J., Mankel, R., Margotti, A., Marini, G., Martin, J. F., Mastroberardino, A., Mattingly, M. C. K., Melzer-Pellmann, I. -A., Mergelmeyer, S., Miglioranzi, S., Idris, F. Mohamad, Monaco, V., Montanari, A., Morris, J. D., Mujkic, K., Musgrave, B., Nagano, K., Namsoo, T., Nania, R., Nigro, A., Ning, Y., Nobe, T., Noor, U., Notz, D., Nowak, R. J., Nuncio-Quiroz, A. E., Oh, B. Y., Okazaki, N., Oliver, K., Olkiewicz, K., Onishchuk, Yu., Papageorgiu, K., Parenti, A., Paul, E., Pawlak, J. M., Pawlik, B., Pelfer, P. G., Pellegrino, A., Perlański, W., Perrey, H., Piotrzkowski, K., Pluciński, P., Pokrovskiy, N. S., Polini, A., Proskuryakov, A. S., Przybycień, M., Raval, A., Reeder, D. D., Reisert, B., Ren, Z., Repond, J., Ri, Y. D., Robertson, A., Roloff, P., Rubinsky, I., Ruspa, M., Sacchi, R., Salii, A., Samson, U., Sartorelli, G., Savin, A. A., Saxon, D. H., Schioppa, M., Schlenstedt, S., Schleper, P., Schmidke, W. B., Schneekloth, U., Schönberg, V., Schörner-Sadenius, T., Schwartz, J., Sciulli, F., Shcheglova, L. M., Shehzadi, R., Shimizu, S., Singh, I., Skillicorn, I. O., Słomiński, W., Smith, W. H., Sola, V., Solano, A., Son, D., Sosnovtsev, V., Spiridonov, A., Stadie, H., Stanco, L., Stern, A., Stewart, T. P., Stifutkin, A., Stopa, P., Suchkov, S., Susinno, G., Suszycki, L., Sztuk-Dambietz, J., Szuba, D., Szuba, J., Tapper, A. D., Tassi, E., Terrón, J., Theedt, T., Tiecke, H., Tokushuku, K., Tomalak, O., Tomaszewska, J., Tsurugai, T., Turcato, M., Tymieniecka, T., Vázquez, M., Verbytskyi, A., Viazlo, O., Vlasov, N. N., Volynets, O., Walczak, R., Abdullah, W. A. T. Wan, Whitmore, J. J., Wiggers, L., Wing, M., Wlasenko, M., Wolf, G., Wolfe, H., Wrona, K., Yagües-Molina, A. G., Yamada, S., Yamazaki, Y., Yoshida, R., Youngman, C., Żarnecki, A. F., Zawiejski, L., Zenaiev, O., Zeuner, W., Zhautykov, B. O., Zhmak, N., Zhou, C., Zichichi, A., Zolkapli, Z., Zolko, M., and Zotkin, D. S.

Subjects
High Energy Physics - Experiment
Abstract

A search for single-top production, $ep \rightarrow etX$, has been performed with the ZEUS detector at HERA using data corresponding to an integrated luminosity of $0.37\fbi$. No evidence for top production was found, consistent with the expectation from the Standard Model. Limits were computed for single-top production via flavour changing neutral current transitions. The result was combined with a previous ZEUS result yielding a total luminosity of 0.50fb-1. A 95% credibility level upper limit of 0.13 pb was obtained for the cross section at the centre-of-mass energy of $\sqrt{s}=315\gev$., Comment: Included approximate NLO and NNLO corrections to the cross section calculation used to derive coupling limit for the top production mediated by gamma exchange. 30 pages, 5 figures, 3 tables. Published in Phys. Lett. B 708 (2012) 27

Published
2011
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45. Scaled momentum distributions for K0s and Lambda/bar Lambda in DIS at HERA

Author

ZEUS Collaboration, Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aggarwal, R., Antonelli, S., Antonioli, P., Antonov, A., Arneodo, M., Aushev, V., Aushev, Y., Bachynska, O., Bamberger, A., Barakbaev, A. N., Barbagli, G., Bari, G., Barreiro, F., Bartosik, N., Bartsch, D., Basile, M., Behnke, O., Behr, J., Behrens, U., Bellagamba, L., Bertolin, A., Bhadra, S., Bindi, M., Blohm, C., Bokhonov, V., Bold, T., Bondarenko, K., Boos, E. G., Borras, K., Boscherini, D., Bot, D., Brock, I., Brownson, E., Brugnera, R., Brummer, N., Bruni, A., Bruni, G., Brzozowska, B., Bussey, P. J., Bylsma, B., Caldwell, A., Capua, M., Carlin, R., Catterall, C. D., Chekanov, S., Chwastowski, J., Ciborowski, J., Ciesielski, R., Cifarelli, L., Cindolo, F., Contin, A., Cooper-Sarkar, A. M., Coppola, N., Corradi, M., Corriveau, F., Costa, M., D'Agostini, G., Corso, F. Dal, del Peso, J., Dementiev, R. K., De Pasquale, S., Derrick, M., Devenish, R. C. E., Dobur, D., Dolgoshein, B. A., Dolinska, G., Doyle, A. T., Drugakov, V., Durkin, L. S., Dusini, S., Eisenberg, Y., Ermolov, P. F., Eskreys, A., Fang, S., Fazio, S., Ferrando, J., Ferrero, M. I., Figiel, J., Forrest, M., Foster, B., Gach, G., Galas, A., Gallo, E., Garfagnini, A., Geiser, A., Gialas, I., Gladilin, L. K., Gladkov, D., Glasman, C., Gogota, O., Golubkov, Yu. A., Goettlicher, P., Grabowska-Bold, I., Grebenyuk, J., Gregor, I., Grigorescu, G., Grzelak, G., Gueta, O., Guzik, M., Gwenlan, C., Haas, T., Hain, W., Hamatsu, R., Hart, J. C., Hartmann, H., Hartner, G., Hilger, E., Hochman, D., Hori, R., Horton, K., Huttmann, A., Ibrahim, Z. A., Iga, Y., Ingbir, R., Ishitsuka, M., Jakob, H. -P., Januschek, F., Jones, T. W., Jungst, M., Kadenko, I., Kahle, B., Kananov, S., Kanno, T., Karshon, U., Karstens, F., Katkov, I. I., Kaur, M., Kaur, P., Keramidas, A., Khein, L. A., Kim, J. Y., Kisielewska, D., Kitamura, S., Klanner, R., Klein, U., Koffeman, E., Kooijman, P., Korol, Ie., Korzhavina, I. A., Kotanski, A., Koetz, U., Kowalski, H., Kuprash, O., Kuze, M., Lee, A., Levchenko, B. B., Levy, A., Libov, V., Limentani, S., Ling, T. Y., Lisovyi, M., Lobodzinska, E., Lohmann, W., Loehr, B., Lohrmann, E., Long, K. R., Longhin, A., Lontkovskyi, D., Lukina, O. Yu., Maeda, J., Magill, S., Makarenko, I., Malka, J., Mankel, R., Margotti, A., Marini, G., Martin, J. F., Mastroberardino, A., Mattingly, M. C. K., Melzer-Pellmann, I. -A., Mergelmeyer, S., Miglioranzi, S., Idris, F. Mohamad, Monaco, V., Montanari, A., Morris, J. D., Mujkic, K., Musgrave, B., Nagano, K., Namsoo, T., Nania, R., Nigro, A., Ning, Y., Nobe, T., Noor, U., Notz, D., Nowak, R. J., Nuncio-Quiroz, A. E., Oh, B. Y., Okazaki, N., Oliver, K., Olkiewicz, K., Onishchuk, Yu., Papageorgiu, K., Parenti, A., Paul, E., Pawlak, J. M., Pawlik, B., Pelfer, P. G., Pellegrino, A., Perlanski, W., Perrey, H., Piotrzkowski, K., Plucinski, P., Pokrovskiy, N. S., Polini, A., Proskuryakov, A. S., Przybycien, M., Raval, A., Reeder, D. D., Reisert, B., Ren, Z., Repond, J., Ri, Y. D., Robertson, A., Roloff, P., Rubinsky, I., Ruspa, M., Sacchi, R., Salii, A., Samson, U., Sartorelli, G., Savin, A. A., Saxon, D. H., Schioppa, M., Schlenstedt, S., Schleper, P., Schmidke, W. B., Schneekloth, U., Schoenberg, V., Schoerner-Sadenius, T., Schwartz, J., Sciulli, F., Shcheglova, L. M., Shehzadi, R., Shimizu, S., Singh, I., Skillicorn, I. O., Slominski, W., Smith, W. H., Sola, V., Solano, A., Son, D., Sosnovtsev, V., Spiridonov, A., Stadie, H., Stanco, L., Stern, A., Stewart, T. P., Stifutkin, A., Stopa, P., Suchkov, S., Susinno, G., Suszycki, L., Sztuk-Dambietz, J., Szuba, D., Szuba, J., Tapper, A. D., Tassi, E., Terron, J., Theedt, T., Tiecke, H., Tokushuku, K., Tomalak, O., Tomaszewska, J., Tsurugai, T., Turcato, M., Tymieniecka, T., Vazquez, M., Verbytskyi, A., Viazlo, O., Vlasov, N. N., Volynets, O., Walczak, R., Abdullah, W. A. T. Wan, Whitmore, J. J., Wiggers, L., Wing, M., Wlasenko, M., Wolf, G., Wolfe, H., Wrona, K., Yagues-Molina, A. G., Yamada, S., Yamazaki, Y., Yoshida, R., Youngman, C., Zarnecki, A. F., Zawiejski, L., Zenaiev, O., Zeuner, W., Zhautykov, B. O., Zhmak, N., Zhou, C., Zichichi, A., Zolkapli, Z., Zolko, M., and Zotkin, D. S.

Subjects
High Energy Physics - Experiment
Abstract

Scaled momentum distributions for the strange hadrons K0s and Lambda/bar Lambda were measured in deep inelastic ep scattering with the ZEUS detector at HERA using an integrated luminosity of 330 pb-1. The evolution of these distributions with the photon virtuality, Q2, was studied in the kinematic region 10

Published
2011
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46. Measurement of the t dependence in exclusive photoproduction of Upsilon(1S) mesons at HERA

Author

ZEUS collaboration, Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aggarwal, R., Antonelli, S., Antonioli, P., Antonov, A., Arneodo, M., Aushev, V., Aushev, Y., Bachynska, O., Bamberger, A., Barakbaev, A. N., Barbagli, G., Bari, G., Barreiro, F., Bartosik, N., Bartsch, D., Basile, M., Behnke, O., Behr, J., Behrens, U., Bellagamba, L., Bertolin, A., Bhadra, S., Bindi, M., Blohm, C., Bokhonov, V., Bołd, T., Bondarenko, K., Boos, E. G ., Borras, K., Boscherini, D., Bot, D., Brock, I., Brownson, E., Brugnera, R., Brümmer, N., Bruni, A., Bruni, G., Brzozowska, B., Bussey, P. J., Bylsma, B., Caldwell, A., Capua, M., Carlin, R., Catterall, C. D., Chekanov, S., Chwastowski, J., Ciborowski, J., Ciesielski, R., Cifarelli, L., Cindolo, F., Contin, A., Cooper-Sarkar, A. M., Coppola, N., Corradi, M., Corriveau, F., Costa, M., D'Agostini, G., Corso, F. Dal, del Peso, J., Dementiev, R. K., De Pasquale, S., Derrick, M., Devenish, R. C. E., Dobur, D., Dolgoshein, B. A., Dolinska, G., Doyle, A. T., Drugakov, V., Durkin, L. S., Dusini, S., Eisenberg, Y., Ermolov, P. F., Eskreys, A., Fang, S., Fazio, S., Ferrando, J., Ferrero, M. I., Figiel, J., Forrest, M., Foster, B., Gach, G., Galas, A., Gallo, E., Garfagnini, A., Geiser, A., Gialas, I., Gladilin, L. K., Gladkov, D., Glasman, C., Gogota, O., Golubkov, Yu. A., Göttlicher, P., Grabowska-Bołd, I., Grebenyuk, J., Gregor, I., Grigorescu, G., Grzelak, G., Gueta, O., Guzik, M., Gwenlan, C., Haas, T., Hain, W., Hamatsu, R., Hart, J. C., Hartmann, H., Hartner, G., Hilger, E., Hochman, D., Hori, R., Horton, K., Hüttmann, A., Ibrahim, Z. A., Iga, Y., Ingbir, R., Ishitsuka, M., Jakob, H. -P., Januschek, F., Jones, T. W., Jüngst, M., Kadenko, I., Kahle, B., Kananov, S., Kanno, T., Karshon, U., Karstens, F., Katkov, I. I., Kaur, M., Kaur, P., Keramidas, A., Khein, L. A., Kim, J. Y., Kisielewska, D., Kitamura, S., Klanner, R., Klein, U., Koffeman, E., Kooijman, P., Korol, Ie., Korzhavina, I. A., Kotański, A., Kötz, U., Kowalski, H., Kuprash, O., Kuze, M., Lee, A., Levchenko, B. B., Levy, A., Libov, V., Limentani, S., Ling, T. Y., Lisovyi, M., Lobodzinska, E., Lohmann, W., Löhr, B., Lohrmann, E., Long, K. R., Longhin, A., Lontkovskyi, D., Lukina, O. Yu., Maeda, J., Magill, S., Makarenko, I., Malka, J., Mankel, R., Margotti, A., Marini, G., Martin, J. F., Mastroberardino, A., Mattingly, M. C. K., Melzer-Pellmann, I. -A., Mergelmeyer, S., Miglioranzi, S., Idris, F. Mohamad, Monaco, V., Montanari, A., Morris, J. D., Mujkic, K., Musgrave, B., Nagano, K., Namsoo, T., Nania, R., Nigro, A., Ning, Y., Nobe, T., Noor, U., Notz, D., Nowak, R. J., Nuncio-Quiroz, A. E., Oh, B. Y., Okazaki, N., Oliver, K., Olkiewicz, K., Onishchuk, Yu., Papageorgiu, K., Parenti, A., Paul, E., Pawlak, J. M., Pawlik, B., Pelfer, P. G., Pellegrino, A., Perlański, W., Perrey, H., Piotrzkowski, K., Pluciński, P., Pokrovskiy, N. S., Polini, A., Proskuryakov, A. S., Przybycień, M., Raval, A., Reeder, D. D., Reisert, B., Ren, Z., Repond, J., Ri, Y. D., Robertson, A., Roloff, P., Rubinsky, I., Ruspa, M., Sacchi, R., Salii, A., Samson, U., Sartorelli, G., Savin, A. A., Saxon, D. H., Schioppa, M., Schlenstedt, S., Schleper, P., Schmidke, W. B., Schneekloth, U., Schönberg, V., Schörner-Sadenius, T., Schwartz, J., Sciulli, F., Shcheglova, L. M., Shehzadi, R., Shimizu, S., Singh, I., Skillicorn, I. O., Słomiński, W., Smith, W. H., Sola, V., Solano, A., Son, D., Sosnovtsev, V., Spiridonov, A., Stadie, H., Stanco, L., Stern, A., Stewart, T. P., Stifutkin, A., Stopa, P., Suchkov, S., Susinno, G., Suszycki, L., Sztuk-Dambietz, J., Szuba, D., Szuba, J., Tapper, A. D., Tassi, E., Terrón, J., Theedt, T., Tiecke, H., Tokushuku, K., Tomalak, O., Tomaszewska, J., Tsurugai, T., Turcato, M., Tymieniecka, T., Vázquez, M., Verbytskyi, A., Viazlo, O., Vlasov, N. N., Volynets, O., Walczak, R., Abdullah, W. A. T. Wan, Whitmore, J. J., Wiggers, L., Wing, M., Wlasenko, M., Wolf, G., Wolfe, H., Wrona, K., Yagües-Molina, A. G., Yamada, S., Yamazaki, Y., Yoshida, R., Youngman, C., Żarnecki, A. F., Zawiejski, L., Zenaiev, O., Zeuner, W., Zhautykov, B. O., Zhmak, N., Zhou, C., Zichichi, A., Zolkapli, Z., Zolko, M., and Zotkin, D. S.

Subjects
High Energy Physics - Experiment
Abstract

The exclusive photoproduction reaction gamma p -> Upsilon(1S) p has been studied with the ZEUS detector in ep collisions at HERA using an integrated luminosity of 468 pb^-1. The measurement covers the kinematic range 60 Upsilon(1S) p cross section., Comment: 15 pages, 4 figures; http://dx.doi.org/10.1016/j.physletb.2012.01.009

Published
2011
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47. Measurement of heavy-quark jet photoproduction at HERA

Author

ZEUS Collaboration, Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aggarwal, R., Antonelli, S., Antonioli, P., Antonov, A., Arneodo, M., Aushev, V., Aushev, Y., Bachynska, O., Bamberger, A., Barakbaev, A. N., Barbagli, G., Bari, G., Barreiro, F., Bartosik, N., Bartsch, D., Basile, M., Behnke, O., Behr, J., Behrens, U., Bellagamba, L., Bertolin, A., Bhadra, S., Bindi, M., Blohm, C., Bokhonov, V., Bołd, T., Bolilyi, O., Bondarenko, K., Boos, E. G., Borras, K., Boscherini, D., Bot, D., Brock, I., Brownson, E., Brugnera, R., Brümmer, N., Bruni, A., Bruni, G., Brzozowska, B., Bussey, P. J., Bylsma, B., Caldwell, A., Capua, M., Carlin, R., Catterall, C. D., Chekanov, S., Chwastowski, J., Ciborowski, J., Ciesielski, R., Cifarelli, L., Cindolo, F., Contin, A., Cooper-Sarkar, A. M., Coppola, N., Corradi, M., Corriveau, F., Costa, M., D'Agostini, G., Corso, F. Dal, del Peso, J., Dementiev, R. K., De Pasquale, S., Derrick, M., Devenish, R. C. E., Dobur, D., Dolgoshein, B. A., Dolinska, G., Doyle, A. T., Drugakov, V., Durkin, L. S., Dusini, S., Eisenberg, Y., Ermolov, P. F., Eskreys, A., Fang, S., Fazio, S., Ferrando, J., Ferrero, M. I., Figiel, J., Forrest, M., Foster, B., Fourletov, S., Gach, G., Galas, A., Gallo, E., Garfagnini, A., Geiser, A., Gialas, I., Gladilin, L. K., Gladkov, D., Glasman, C., Gogota, O., Golubkov, Yu. A., Göttlicher, P., Grabowska-Bołd, I., Grebenyuk, J., Gregor, I., Grigorescu, G., Grzelak, G., Gueta, O., Gwenlan, C., Haas, T., Hain, W., Hamatsu, R., Hart, J. C., Hartmann, H., Hartner, G., Hilger, E., Hochman, D., Hori, R., Horton, K., Hüttmann, A., Ibrahim, Z. A., Iga, Y., Ingbir, R., Ishitsuka, M., Jakob, H. -P., Januschek, F., Jimenez, M., Jones, T. W., Jüngst, M., Kadenko, I., Kahle, B., Kamaluddin, B., Kananov, S., Kanno, T., Karshon, U., Karstens, F., Katkov, I. I., Kaur, M., Kaur, P., Keramidas, A., Khein, L. A., Kim, J. Y., Kisielewska, D., Kitamura, S., Klanner, R., Klein, U., Koffeman, E., Kooijman, P., Korol, Ie., Korzhavina, I. A., Kotański, A., Kötz, U., Kowalski, H., Kulinski, P., Kuprash, O., Kuze, M., Lee, A., Levchenko, B. B., Levy, A., Libov, V., Limentani, S., Ling, T. Y., Lisovyi, M., Lobodzinska, E., Lohmann, W., Löhr, B., Lohrmann, E., Long, K. R., Longhin, A., Lontkovskyi, D., Lukina, O. Yu., Łużniak, P., Maeda, J., Magill, S., Makarenko, I., Malka, J., Mankel, R., Margotti, A., Marini, G., Martin, J. F., Mastroberardino, A., Mattingly, M. C. K., Melzer-Pellmann, I. -A., Mergelmeyer, S., Miglioranzi, S., Idris, F. Mohamad, Monaco, V., Montanari, A., Morris, J. D., Mujkic, K., Musgrave, B., Nagano, K., Namsoo, T., Nania, R., Nicholass, D., Nigro, A., Ning, Y., Nobe, T., Noor, U., Notz, D., Nowak, R. J., Nuncio-Quiroz, A. E., Oh, B. Y., Okazaki, N., Oliver, K., Olkiewicz, K., Onishchuk, Yu., Papageorgiu, K., Parenti, A., Paul, E., Pawlak, J. M., Pawlik, B., Pelfer, P. G., Pellegrino, A., Perlanski, W., Perrey, H., Piotrzkowski, K., Plucinski, P., Pokrovskiy, N. S., Polini, A., Proskuryakov, A. S., Przybycień, M., Raval, A., Reeder, D. D., Reisert, B., Ren, Z., Repond, J., Ri, Y. D., Robertson, A., Roloff, P., Ron, E., Rubinsky, I., Ruspa, M., Sacchi, R., Salii, A., Samson, U., Sartorelli, G., Savin, A. A., Saxon, D. H., Schioppa, M., Schlenstedt, S., Schleper, P., Schmidke, W. B., Schneekloth, U., Schönberg, V., Schörner-Sadenius, T., Schwartz, J., Sciulli, F., Shcheglova, L. M., Shehzadi, R., Shimizu, S., Singh, I., Skillicorn, I. O., Słomiński, W., Smith, W. H., Sola, V., Solano, A., Son, D., Sosnovtsev, V., Spiridonov, A., Stadie, H., Stanco, L., Stern, A., Stewart, T. P., Stifutkin, A., Stopa, P., Suchkov, S., Susinno, G., Suszycki, L., Sztuk-Dambietz, J., Szuba, D., Szuba, J., Tapper, A. D., Tassi, E., Terrón, J., Theedt, T., Tiecke, H., Tokushuku, K., Tomalak, O., Tomaszewska, J., Tsurugai, T., Turcato, M., Tymieniecka, T., Uribe-Estrada, C., Vázquez, M., Verbytskyi, A., Viazlo, O., Vlasov, N. N., Volynets, O., Walczak, R., Abdullah, W. A. T. Wan, Whitmore, J. J., Whyte, J., Wiggers, L., Wing, M., Wlasenko, M., Wolf, G., Wolfe, H., Wrona, K., Yagües-Molina, A. G., Yamada, S., Yamazaki, Y., Yoshida, R., Youngman, C., Żarnecki, A. F., Zawiejski, L., Zenaiev, O., Zeuner, W., Zhautykov, B. O., Zhmak, N., Zhou, C., Zichichi, A., Zolko, M., Zotkin, D. S., and Zulkapli, Z.

Subjects
High Energy Physics - Experiment
Abstract

Photoproduction of beauty and charm quarks in events with at least two jets has been measured with the ZEUS detector at HERA using an integrated luminosity of 133 $pb^{-1}$. The fractions of jets containing b and c quarks were extracted using the invariant mass of charged tracks associated with secondary vertices and the decay-length significance of these vertices. Differential cross sections as a function of jet transverse momentum, $p_{T}^{\text{jet}}$, and pseudorapidity, $\eta^{\text{jet}}$, were measured. The data are compared with previous measurements and are well described by next-to-leading-order QCD predictions., Comment: 35 pages, 9 figures, 3 tables

Published
2011
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48. Measurement of beauty production in deep inelastic scattering at HERA using decays into electrons

Author

ZEUS collaboration, Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aggarwal, R., Antonelli, S., Antonioli, P., Antonov, A., Arneodo, M., Aushev, V., Aushev, Y., Bachynska, O., Bamberger, A., Barakbaev, A. N., Barbagli, G., Bari, G., Barreiro, F., Bartosik, N., Bartsch, D., Basile, M., Behnke, O., Behr, J., Behrens, U., Bellagamba, L., Bertolin, A., Bhadra, S., Bindi, M., Blohm, C., Bokhonov, V., Bołd, T., Bolilyi, O., Boos, E. G., Borras, K., Boscherini, D., Bot, D., Boutle, S. K., Brock, I., Brownson, E., Brugnera, R., Brümmer, N., Bruni, A., Bruni, G., Brzozowska, B., Bussey, P. J., Butterworth, J. M., Bylsma, B., Caldwell, A., Capua, M., Carlin, R., Catterall, C. D., Chekanov, S., Chwastowski, J., Ciborowski, J., Ciesielski, R., Cifarelli, L., Cindolo, F., Contin, A., Cooper-Sarkar, A. M., Coppola, N., Corradi, M., Corriveau, F., Costa, M., D'Agostini, G., Corso, F. Dal, del Peso, J., Dementiev, R. K., De Pasquale, S., Derrick, M., Devenish, R. C. E., Dobur, D., Dolgoshein, B. A., Dolinska, G., Doyle, A. T., Drugakov, V., Durkin, L. S., Dusini, S., Eisenberg, Y., Ermolov, P. F., Eskreys, A., Fang, S., Fazio, S., Ferrando, J., Ferrero, M. I., Figiel, J., Forrest, M., Foster, B., Fourletov, S., Gach, G., Galas, A., Gallo, E., Garfagnini, A., Geiser, A., Gialas, I., Gladilin, L. K., Gladkov, D., Glasman, C., Gogota, O., Golubkov, Yu. A., Göttlicher, P., Grabowska-Bołd, I., Grebenyuk, J., Gregor, I., Grigorescu, G., Grzelak, G., Gueta, O., Gwenlan, C., Haas, T., Hain, W., Hamatsu, R., Hart, J. C., Hartmann, H., Hartner, G., Hilger, E., Hochman, D., Hori, R., Horton, K., Hüttmann, A., Iacobucci, G., Ibrahim, Z. A., Iga, Y., Ingbir, R., Ishitsuka, M., Jakob, H. -P., Januschek, F., Jimenez, M., Jones, T. W., Jüngst, M., Kadenko, I., Kahle, B., Kamaluddin, B., Kananov, S., Kanno, T., Karshon, U., Karstens, F., Katkov, I. I., Kaur, M., Kaur, P., Keramidas, A., Khein, L. A., Kim, J. Y., Kisielewska, D., Kitamura, S., Klanner, R., Klein, U., Koffeman, E., Kooijman, P., Korol, Ie., Korzhavina, I. A., Kotański, A., Kötz, U., Kowalski, H., Kulinski, P., Kuprash, O., Kuze, M., Lee, A., Levchenko, B. B., Levy, A., Libov, V., Limentani, S., Ling, T. Y., Lisovyi, M., Lobodzinska, E., Lohmann, W., Löhr, B., Lohrmann, E., Loizides, J. H., Long, K. R., Longhin, A., Lontkovskyi, D., Lukina, O. Yu., Łużniak, P., Maeda, J., Magill, S., Makarenko, I., Malka, J., Mankel, R., Margotti, A., Marini, G., Martin, J. F., Mastroberardino, A., Mattingly, M. C. K., Melzer-Pellmann, I. -A., Mergelmeyer, S., Miglioranzi, S., Idris, F. Mohamad, Monaco, V., Montanari, A., Morris, J. D., Mujkic, K., Musgrave, B., Nagano, K., Namsoo, T., Nania, R., Nicholass, D., Nigro, A., Ning, Y., Noor, U., Notz, D., Nowak, R. J., Nuncio-Quiroz, A. E., Oh, B. Y., Okazaki, N., Oliver, K., Olkiewicz, K., Onishchuk, Yu., Papageorgiu, K., Parenti, A., Paul, E., Pawlak, J. M., Pawlik, B., Pelfer, P. G., Pellegrino, A., Perlanski, W., Perrey, H., Piotrzkowski, K., Plucinski, P., Pokrovskiy, N. S., Polini, A., Proskuryakov, A. S., Przybycień, M., Raval, A., Reeder, D. D., Reisert, B., Ren, Z., Repond, J., Ri, Y. D., Robertson, A., Roloff, P., Ron, E., Rubinsky, I., Ruspa, M., Sacchi, R., Salii, A., Samson, U., Sartorelli, G., Savin, A. A., Saxon, D. H., Schioppa, M., Schlenstedt, S., Schleper, P., Schmidke, W. B., Schneekloth, U., Schönberg, V., Schörner-Sadenius, T., Schwartz, J., Sciulli, F., Shcheglova, L. M., Shehzadi, R., Shimizu, S., Singh, I., Skillicorn, I. O., Słomiński, W., Smith, W. H., Sola, V., Solano, A., Son, D., Sosnovtsev, V., Spiridonov, A., Stadie, H., Stanco, L., Stern, A., Stewart, T. P., Stifutkin, A., Stopa, P., Suchkov, S., Susinno, G., Suszycki, L., Sztuk-Dambietz, J., Szuba, D., Szuba, J., Tapper, A. D., Tassi, E., Terrón, J., Theedt, T., Tiecke, H., Tokushuku, K., Tomalak, O., Tomaszewska, J., Tsurugai, T., Turcato, M., Tymieniecka, T., Uribe-Estrada, C., Vázquez, M., Verbytskyi, A., Viazlo, O., Vlasov, N. N., Volynets, O., Walczak, R., Abdullah, W. A. T. Wan, Whitmore, J. J., Whyte, J., Wiggers, L., Wing, M., Wlasenko, M., Wolf, G., Wolfe, H., Wrona, K., Yagües-Molina, A. G., Yamada, S., Yamazaki, Y., Yoshida, R., Youngman, C., Żarnecki, A. F., Zawiejski, L., Zenaiev, O., Zeuner, W., Zhautykov, B. O., Zhmak, N., Zhou, C., Zichichi, A., Zolko, M., Zotkin, D. S., and Zulkapli, Z.

Subjects
High Energy Physics - Experiment
Abstract

The production of beauty quarks in ep interactions has been studied with the ZEUS detector at HERA for exchanged four-momentum squared Q^2 > 10 GeV^2, using an integrated luminosity of 363 pb^{-1}. The beauty events were identified using electrons from semileptonic b decays with a transverse momentum 0.9 < p_T^e < 8 GeV and pseudorapidity |eta^e| < 1.5. Cross sections for beauty production were measured and compared with next-to-leading-order QCD calculations. The beauty contribution to the proton structure function F_2 was extracted from the double-differential cross section as a function of Bjorken-x and Q^2., Comment: 34 pages, 8 figures, 4 tables. Version published in EPJ C

Published
2011
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49. Improved iterative Bayesian unfolding

Author

D'Agostini, G.

Subjects
Physics - Data Analysis, Statistics and Probability
Abstract

This paper reviews the basic ideas behind a Bayesian unfolding published some years ago and improves their implementation. In particular, uncertainties are now treated at all levels by probability density functions and their propagation is performed by Monte Carlo integration. Thus, small numbers are better handled and the final uncertainty does not rely on the assumption of normality. Theoretical and practical issues concerning the iterative use of the algorithm are also discussed. The new program, implemented in the R language, is freely available, together with sample scripts to play with toy models., Comment: 31 pages, 7 figures, presented at the Alliance Workshop on Unfolding and Data Correction (Hamburg, Germany, 27-28 May 2010). Slides of the presentation as well as the R code can be found in http://www.roma1.infn.it/~dagos/prob+stat.html#unf2

Published
2010

50. Measurement of beauty production in DIS and F_2^bbbar extraction at ZEUS

Author

ZEUS collaboration, Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aggarwal, R., Antonelli, S., Antonioli, P., Antonov, A., Arneodo, M., Aushev, V., Aushev, Y., Bachynska, O., Bamberger, A., Barakbaev, A. N., Barbagli, G., Bari, G., Barreiro, F., Bartsch, D., Basile, M., Behnke, O., Behr, J., Behrens, U., Bellagamba, L., Bertolin, A., Bhadra, S., Bindi, M., Blohm, C., Bold, T., Boos, E. G., Borodin, M., Borras, K., Boscherini, D., Bot, D., Boutle, S. K., Brock, I., Brownson, E., Brugnera, R., Bruemmer, N., Bruni, A., Bruni, G., Brzozowska, B., Bussey, P. J., Butterworth, J. M., Bylsma, B., Caldwell, A., Capua, M., Carlin, R., Catterall, C. D., Chekanov, S., Chwastowski, J., Ciborowski, J., Ciesielski, R., Cifarelli, L., Cindolo, F., Contin, A., Cooper-Sarkar, A. M., Coppola, N., Corradi, M., Corriveau, F., Costa, M., D'Agostini, G., Corso, F. Dal, de Favereau, J., del Peso, J., Dementiev, R. K., De Pasquale, S., Derrick, M., Devenish, R. C. E., Dobur, D., Dolgoshein, B. A., Doyle, A. T., Drugakov, V., Durkin, L. S., Dusini, S., Eisenberg, Y., Ermolov, P. F., Eskreys, A., Fang, S., Fazio, S., Ferrando, J., Ferrero, M. I., Figiel, J., Forrest, M., Foster, B., Fourletov, S., Gach, G., Galas, A., Gallo, E., Garfagnini, A., Geiser, A., Gialas, I., Gladilin, L. K., Gladkov, D., Glasman, C., Gogota, O., Golubkov, Yu. A., Goettlicher, P., Grabowska-Bold, I., Grebenyuk, J., Gregor, I., Grigorescu, G., Grzelak, G., Gwenlan, C., Haas, T., Hain, W., Hamatsu, R., Hart, J. C., Hartmann, H., Hartner, G., Hilger, E., Hochman, D., Holm, U., Hori, R., Horton, K., Huettmann, A., Iacobucci, G., Ibrahim, Z. A., Iga, Y., Ingbir, R., Ishitsuka, M., Jakob, H. -P., Januschek, F., Jimenez, M., Jones, T. W., Juengst, M., Kadenko, I., Kahle, B., Kamaluddin, B., Kananov, S., Kanno, T., Karshon, U., Karstens, F., Katkov, I. I., Kaur, M., Kaur, P., Keramidas, A., Khein, L. A., Kim, J. Y., Kisielewska, D., Kitamura, S., Klanner, R., Klein, U., Koffeman, E., Kollar, D., Kooijman, P., Korol, Ie., Korzhavina, I. A., Kotanski, A., Koetz, U., Kowalski, H., Kulinski, P., Kuprash, O., Kuze, M., Kuzmin, V. A., Lee, A., Levchenko, B. B., Levy, A., Libov, V., Limentani, S., Ling, T. Y., Lisovyi, M., Lobodzinska, E., Lohmann, W., Loehr, B., Lohrmann, E., Loizides, J. H., Long, K. R., Longhin, A., Lontkovskyi, D., Lukina, O. Yu., Luzniak, P., Maeda, J., Magill, S., Makarenko, I., Malka, J., Mankel, R., Margotti, A., Marini, G., Martin, J. F., Mastroberardino, A., Matsumoto, T., Mattingly, M. C. K., Melzer-Pellmann, I. -A., Miglioranzi, S., Idris, F. Mohamad, Monaco, V., Montanari, A., Morris, J. D., Musgrave, B., Nagano, K., Namsoo, T., Nania, R., Nicholass, D., Nigro, A., Ning, Y., Noor, U., Notz, D., Nowak, R. J., Nuncio-Quiroz, A. E., Oh, B. Y., Okazaki, N., Oliver, K., Olkiewicz, K., Onishchuk, Yu., Ota, O., Papageorgiu, K., Parenti, A., Paul, E., Pawlak, J. M., Pawlik, B., Pelfer, P. G., Pellegrino, A., Perlanski, W., Perrey, H., Piotrzkowski, K., Plucinski, P., Pokrovskiy, N. S., Polini, A., Proskuryakov, A. S., Przybycien, M., Raval, A., Reeder, D. D., Reisert, B., Ren, Z., Repond, J., Ri, Y. D., Robertson, A., Roloff, P., Ron, E., Rubinsky, I., Ruspa, M., Sacchi, R., Salii, A., Samson, U., Sartorelli, G., Savin, A. A., Saxon, D. H., Schioppa, M., Schlenstedt, S., Schleper, P., Schmidke, W. B., Schneekloth, U., Schoenberg, V., Schoerner-Sadenius, T., Schwartz, J., Sciulli, F., Shcheglova, L. M., Shehzadi, R., Shimizu, S., Singh, I., Skillicorn, I. O., Slominski, W., Smith, W. H., Sola, V., Solano, A., Son, D., Sosnovtsev, V., Spiridonov, A., Stadie, H., Stanco, L., Stern, A., Stewart, T. P., Stifutkin, A., Stopa, P., Suchkov, S., Susinno, G., Suszycki, L., Sztuk, J., Szuba, D., Szuba, J., Tapper, A. D., Tassi, E., Terron, J., Theedt, T., Tiecke, H., Tokushuku, K., Tomalak, O., Tomaszewska, J., Tsurugai, T., Turcato, M., Tymieniecka, T., Uribe-Estrada, C., Vazquez, M., Verbytskyi, A., Viazlo, V., Vlasov, N. N., Volynets, O., Walczak, R., Abdullah, W. A. T. Wan, Whitmore, J. J., Whyte, J., Wiggers, L., Wing, M., Wlasenko, M., Wolf, G., Wolfe, H., Wrona, K., Yagues-Molina, A. G., Yamada, S., Yamazaki, Y., Yoshida, R., Youngman, C., Zarnecki, A. F., Zawiejski, L., Zenaiev, O., Zeuner, W., Zhautykov, B. O., Zhmak, N., Zhou, C., Zichichi, A., Zolko, M., Zotkin, D. S., and Zulkapli, Z.

Subjects
High Energy Physics - Experiment
Abstract

Beauty production in deep inelastic scattering with events in which a muon and a jet are observed in the final state has been measured with the ZEUS detector at HERA using an integrated luminosity of 114 pb^-1. The fraction of events with beauty quarks in the data was determined using the distribution of the transverse momentum of the muon relative to the jet. The cross section for beauty production was measured in the kinematic range of photon virtuality, Q^2 > 2 Gev^2, and inelasticity, 0.05 < y < 0.7, with the requirement of a muon and a jet. Total and differential cross sections are presented and compared to QCD predictions. The beauty contribution to the structure function F_2 was extracted and is compared to theoretical predictions., Comment: 24 pages, 5 figures

Published
2010
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