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Your search keyword '"Balwierz Pytko, I."' showing total 7 results
Start Over Author "Balwierz Pytko, I." Topic e(+)e(-) collisions
7 results on '"Balwierz Pytko, I."'

1. Study of the Dalitz decay ϕ → ηe + e − with the KLOE detector

Author

Babusci, D., Balwierz Pytko, I., Bencivenni, G., Bloise, C., Bossi, F., Branchini, P., Budano, A., Balkeståhl, L. C., Ceradini, F., Ciambrone, P., Curciarello, Francesca, Czerwiński, E., Danè, E., DE LEO, Veronica, De Lucia, E., De Robertis, G., De Santis, A., De Simone, P., Di Cicco, A., Domenico, A. D., Salvo, R. D., Domenici, D., Erriquez, O., Fanizzi, G., Fantini, A., Felici, G., Fiore, S., Franzini, P., Gajos, A., Gauzzi, P., Giardina, Giorgio 42, Giovannella, S., Graziani, E., Happacher, F., Heijkenskjöld, L., Höistad, B., Johansson, T., Kacprzak, K., Kamińska, D., Krzemien, W., Kupsc, A., Lee Franzini, J., Loddo, F., Loffredo, S., Mandaglio, Giuseppe, Martemianov, M., Martini, M., Mascolo, M., Messi, R., Miscetti, S., Morello, G., Moricciani, D., Moskal, P., Nguyen, F., Palladino, A., Passeri, A., Patera, V., Longhi, I. P., Ranieri, A., Santangelo, P., Sarra, I., Schioppa, M., Sciascia, B., Silarski, M., Tortora, L., Venanzoni, G., Wiślicki, W., Wolke, M., Zdebik, J., Fiore, S., Babusci, D., Ceradini, Filippo, DI CICCO, Alessandro, Loffredo, Salvatore, and PRADO LONGHI, Ivan

Subjects
Physics, Settore FIS/01, e(+)e(-) collisions, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, Detector, e+e− collisions, Conversion decay, Transition form factor, 01 natural sciences, lcsh:QC1-999, Nuclear physics, Pseudoscalar, 0103 physical sciences, E+e- collisions, High Energy Physics::Experiment, 010306 general physics, lcsh:Physics
Abstract

We have studied the vector to pseudoscalar conversion decay ϕ→ηe+e−, with η→π0π0π0, with the KLOE detector at DAΦNE. The data set of 1.7 fb−1 of e+e− collisions at s∼Mϕ contains a clear conversion decay signal of ∼31,000 events from which we measured a value of BR(ϕ→ηe+e−)=(1.075±0.007±0.038)×10−4. The same sample is used to determine the transition form factor by a fit to the e+e− invariant mass spectrum, obtaining bϕη=(1.28±0.10−0.08+0.09) GeV−2, that improves by a factor of five the precision of the previous measurement and is in good agreement with VMD expectations. Keywords: e+e− collisions, Conversion decay, Transition form factor

Published
2015

2. Study of the Dalitz decay phi -> eta e(+)e(-) with the KLOE detector

Author

Babusci, D., Balwierz-Pytko, I., Bencivenni, G., Bloise, C., Bossi, F., Branchini, P., Budano, A., Balkeståhl, Li Caldeira, Ceradini, F., Ciambrone, P., Curciarello, F., Czerwinski, E., Dane, E., De Leo, V., De Luciah, E., De Robertis, G., De Santis, A., De Simone, P., Di Cicco, A., Di Domenico, A., Di Salvo, R., Domenici, D., Erriqueza, O., Fanizzia, G., Fantinio, A., Felici, G., Fiore, S., Franzini, P., Gajos, A., Gauzzi, P., Giardina, G., Giovannella, S., Graziani, E., Happacher, F., Heijkenskjöld, Lena, Höistad, Bo, Johansson, Tord, Kaminska, D., Krzemien, W., Kupsc, Andrzej, Lee-Franzini, J., Loddo, F., Loffredo, S., Mandaglio, G., Martemianov, M., Martini, M., Mascolo, M., Messi, R., Miscetti, S., Morello, G., Moricciani, D., Moskal, P., Palladino, A., Passeri, A., Patera, V., Longhi, I. Prado, Ranieri, A., Santangelo, P., Sarra, I., Schioppa, M., Sciascia, B., Silarski, M., Tortora, L., Venanzoni, G., Wislicki, W., and Wolke, Magnus

Subjects
e(+)e(-) collisions, Physical Sciences, Fysik, High Energy Physics::Experiment, Conversion decay, Transition form factor
Abstract

We have studied the vector to pseudoscalar conversion decay phi -> eta e(+)e(-), with.. eta -> pi(0)pi(0)pi(0), with the KLOE detector at DA phi NE. The data set of 1.7 fb(-1) of e(+)e(-) collisions at root s similar to M-phi contains a clear conversion decay signal of similar to 31,000 events from which we measured a value of BR(phi -> eta e(+)e-) = (1.075 +/- 0.007 +/- 0.038) x 10(-4). The same sample is used to determine the transition form factor by a fit to the e(+)e(-) invariant mass spectrum, obtaining b(phi eta)=( 1.28 +/- 0.10(-0.08)(+0.09)) GeV-2, that improves by a factor of five the precision of the previous measurement and is in good agreement with VMD expectations.

Published
2015

3. Measurement of Γ(η→π+π-γ)/Γ(η→π+π-π0) with the KLOE detector

Author

Babusci, D, Badoni, D, Balwierz-Pytko, I, Bencivenni, G, Bini, C, Bloise, C, Bocci, V, Bossi, F, Branchini, P, Budano, A, Caldeira Balkestahl, L, Capon, G, Ceradini, F, Ciambrone, P, Czerwinski, E, Dane, E, De Lucia, E, De Robertis, G, De Santis, A, De Simone, P, Di Domenico, A, Di Donato, C, Di Micco, B, Di Salvo, R, Domenici, D, Erriquez, O, Fanizzi, G, Fantini, A, Felici, G, Fiore, S, Franzini, P, Gauzzi, P, Giardina, G, Giovannella, S, Gonnella, F, Graziani, E, Happacher, F, Hoistad, B, Iafolla, L, Jacewicz, M, Johansson, T, Kupsc, A, Lee-Franzini, J, Leverington, B, Loddo, F, Loffredo, S, Mandaglio, G, Martemianov, M, Martini, M, Mascolo, M, Messi, R, Miscetti, S, Morello, G, Moricciani, D, Moskal, P, Nguyen, F, Passeri, A, Patera, V, Prado Longhi, I, Ranieri, A, Redmer, Cf, Santangelo, P, Sarra, I, Schioppa, M, Sciascia, B, Silarski, M, Taccini, C, Tortora, L, Venanzoni, G, Versaci, R, Wislicki, W, Wolke, M, Xu, G, and Zdebik, J

Subjects
e(+)e(-) collisions, Settore FIS/01, eta decays, Chiral perturbation theory, Light mesons
Published
2013

4. Precision measurement of sigma (e(+)e(-) -> pi(+)pi(-)gamma)/sigma(e(+)e(-) ->mu(+)mu(-)gamma) and determination of the pi(+)pi(-) contribution to the muon anomaly with the KLOE detector

Author

Babusci, D., Badoni, D., Balwierz Pytko, I., Bencivenni, G., Bini, Cesare, Bloise, C., Bossi, F., Branchini, P., Budano, A., Caldeira Balkestahl, L., Capon, G., Ceradini, F., Ciambrone, P., Curciarello, F., Czerwinski, E., Dane, E., De Leo, V., Erika De Lucia, De Robertis, G., DE SANTIS, Antonio, De Simone, P., DI DOMENICO, Antonio, Di Donato, C., Domenici, D., Erriquez, O., Fanizzi, G., Felici, G., Fiore, Salvatore, Franzini, Paolo, Gauzzi, Paolo, Giardina, G., Giovannella, S., Gonnella, F., Graziani, E., Happacher, F., Heijkenskjold, L., Hoistad, B., Iafolla, L., Iarocci, Enzo, Jacewicz, M., Johansson, T., Kluge, W., Kupsc, A., Lee Franzini, J., Loddo, F., Lukin, P., Mandaglio, G., Martemianov, M., Martini, M., Mascolo, M., Messi, R., Miscetti, S., Morello, G., Moricciani, D., Moskal, P., Muller, S., Nguyen, F., Passeri, A., Patera, Vincenzo, Prado Longhi, I., Ranieri, A., Redmer, C. F., Santangelo, P., Sarra, I., Schioppa, M., Sciascia, B., Silarski, M., Taccini, C., Tortora, L., Venanzoni, G., Versaci, R., Wislicki, W., Wolke, M., and Zdebik, J.

Subjects
e(+)e(-) collisions, initial state radiation, muon anomaly, pion form factor, TO-LEADING ORDER, HADRONIC CROSS-SECTION, PION FORM-FACTOR, RADIATIVE RETURN, SIGMA(E(+)E(-), CMD-2, FSR
Published
2013

5. Limit on the production of a light vector gauge boson in $\phi $ mesondecays with the KLOE detector

Author

2 Collaboration, Babusci, D., Badoni, D., Balwierz-Pytko, I., Bencivenni, G., Bini, C., Bloise, C., Bossi, F., Branchini, P., Budano, A., Balkestaahl, L. Caldeira, Capon, G., Ceradini, F., Ciambrone, P., Czerwinski, E., Dane, E., De Lucia, E., De Robertis, G., De Santis, A., Di Domenico, A., Di Donato, C., Di Salvo, R., Domenici, D., Erriquez, O., Fanizzi, G., Fantini, A., Felici, G., Fiore, S., Franzini, P., Gauzzi, P., Giardina, G., Giovannella, S., Gonnella, F., Graziani, E., Happacher, F., Heijkenskj, L., Hoistad, B., Iafolla, L., Jacewicz, M., Johansson, T., Kupsc, A., Lee-Franzini, J., Leverington, B., Loddo, F., Loffredo, S., Mandaglio, G., Martemianov, M., Martini, M., Mascolo, M., Messi, R., Miscetti, S., Morello, G., Moricciani, D., Moskal, P., Nguyen, F., Passeri, A., Patera, V., Longhi, I. Prado, Ranieri, A., Redmer, C. F., Santangelo, P., Sarra, I., Schioppa, M., Sciascia, B., Silarski, M., Taccini, C., Tortora, L., Venanzoni, G., Wislicki, W., Wolke, M., Zdebik, J., Babusci, D, and Ceradini, Filippo

Subjects
Dark forces, Nuclear and High Energy Physics, Particle physics, Electron–positron annihilation, FOS: Physical sciences, 01 natural sciences, Settore FIS/04 - Fisica Nucleare e Subnucleare, e(+)e(-) Collisions, Dark forces, Gauge vector boson, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), e(+)e(-) Collisions, 0103 physical sciences, gauge vector boson, Invariant mass, Nuclear Experiment, 010306 general physics, Boson, Physics, Coupling constant, Gauge boson, $e^{+}e^{-}$ collisions, 010308 nuclear & particles physics, Settore FIS/01 - Fisica Sperimentale, Form factor (quantum field theory), Vector meson dominance, Phi meson, dark forces, High Energy Physics::Experiment, Gauge vector boson
Abstract

We present a new limit on the production of a light dark-force mediator with the KLOE detector at DAPHNE. This boson, called U, has been searched for in the decay phi --> eta U, U --> e+ e-, analyzing the decay eta --> pi0 pi0 pi0 in a data sample of 1.7 fb-1. No structures are observed in the e+e- invariant mass distribution over the background. This search is combined with a previous result obtained from the decay eta --> pi+ pi- pi0, increasing the sensitivity. We set an upper limit at 90% C.L. on the ratio between the U boson coupling constant and the fine structure constant of alpha'/alpha < 1.7x10^-5 for 30, Comment: 12 pages, 7 figures, updated PLB version

Published
2013

6. Measurement of Gamma(eta -> pi(+)pi(-)gamma)/Gamma(eta -> pi(+)pi(-)pi(0)) with the KLOE detector

Author

Babusci, D., Badoni, D., Balwierz Pytko, I., Bencivenni, G., Bini, Cesare, Bloise, C., Bocci, V., Bossi, F., Bossi, R., Branchini, P., Budano, A., Caldeira Balkestahl, L., Balkestahl, L. C., Capon, G., Ceradini, F., Ciambrone, P., Czerwinski, E., Dane, E., De Lucia, E., De Robertis, G., De Roberts, G., DE SANTIS, Antonio, De Simone, P., DI DOMENICO, Antonio, Di Donato, C., Di Micco, B., Di Salvo, R., Domenici, D., Erriquez, O., Fanizzi, G., Fantini, A., Felici, G., Fiore, Salvatore, Franzini, Paolo, Gauzzi, Paolo, Giardina, G., Giovannella, S., Gonnella, F., Graziani, E., Happacher, F., Hoistad, B., Iafolla, L., Jacewicz, M., Johansson, T., Kupsc, A., Lee Franzini, J., Leverington, B., Loddo, F., Loffredo, S., Mandaglio, G., Martemianov, M., Martini, M., Mascolo, M., Messi, R., Miscetti, S., Morello, G., Moricciani, D., Moskal, P., Nguyen, F., Passeri, A., Patera, Vincenzo, Prado Longhi, I., Longhi, I. P., Ranieri, A., Redmer, C. F., Santangelo, P., Sarra, I., Schioppa, M., Sciascia, B., Silarski, M., Taccini, C., Tortora, L., Venanzoni, G., Versaci, R., Wislicki, W., Wolke, M., Xu, G., and Zdebik, J.

Subjects
chiral perturbation theory, e(+)e(-) collisions, e+e- collisions, eta decays, light mesons, η decays
Published
2013

7. A new limit on the CP violating decay K-S -> 3 pi(0) with the KLOE experiment

Author

Babusci, D., Badoni, D., Balwierz Pytko, I., Bencivenni, G., Bini, Cesare, Bloise, C., Bossi, F., Branchini, P., Budano, A., Balkestahl, L. C., Capon, G., Ceradini, F., Ciambrone, R., Curciarelloi, F., Czerwiriski, E., Dane, E., Leo, V. D., Lucia, E. D., Robertis, G. D., Santis, A. D., De Leo, V., De Lucia, E., De Robertis, G., De Santis, A., DI DOMENICO, Antonio, Donato, C. D., Salvo, R. D., Di Donato, C., Di Salvo, R., Domenici, D., Erriquez, O., Fanizzi, G., Fantini, A., Felici, G., Fiore, Salvatore, Franzini, Paolo, Gauzzi, Paolo, Giardina, G., Giovannella, S., Gonnella, F., Graziani, E., Happacher, F., Heijkenskjold, L., Hoistad, B., Iafolla, L., Jacewicz, M., Johansson, T., Kacprzak, K., Kupsc, A., Lee Franzini, J., Leverington, B., Loddo, F., Loffredo, S., Mandaglio, G., Martemianov, M., Martini, M., Mascolo, M., Messi, R., Miscetti, S., Morello, G., Moricciahi, D., Moskal, P., Nguyen, F., Passeriu, A., Patera, Vincenzo, Longhi, I. P., Ranieri, A., Redmer, C. F., Santangelo, P., Sarra, I., Schioppa, M., Sciascia, B., Silarski, M., Taccini, C., Tortora, L., Venanzoni, G., Wislicki, W., Wolke, M., and Zdebik, J.

Subjects
da phi ne, e(+)e(-) collisions, rare k-s decays, cp, kloe, cpt
Published
2013

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