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163 results on '"A. Wirzba"'

1. Correlations of $C$ and $CP$ violation in $\eta\to \pi^0\ell^+\ell^-$ and $\eta'\to \eta\ell^+\ell^-$

Author: Akdag, Hakan, Kubis, Bastian, Wirzba, Andreas, Akdag, Hakan, Kubis, Bastian, and Wirzba, Andreas
Abstract: Based on recent progress in the systematic analysis of $C$ and $CP$ violation in the light-meson sector, we calculate the $C$-odd transition amplitudes $\eta\to\pi^0\ell^+\ell^-$ and $\eta'\to\eta\ell^+\ell^-$. Focusing on long-distance contributions driven by the lowest-lying hadronic intermediate states, we work out the correlations between these beyond-the-Standard-Model signals and the Dalitz-plot asymmetries in $\eta \rightarrow \pi^0 \pi^+ \pi^-$ and $\eta' \rightarrow \eta \pi^+ \pi^- $, using dispersion theory., Comment: 31 pages, 7 figures
Published: 2023

2. Correlations of $C$ and $CP$ violation in $\eta\to \pi^0\ell^+\ell^-$ and $\eta'\to \eta\ell^+\ell^-$

Author: Akdag, Hakan, Kubis, Bastian, Wirzba, Andreas, Akdag, Hakan, Kubis, Bastian, and Wirzba, Andreas
Abstract: Based on recent progress in the systematic analysis of $C$ and $CP$ violation in the light-meson sector, we calculate the $C$-odd transition amplitudes $\eta\to\pi^0\ell^+\ell^-$ and $\eta'\to\eta\ell^+\ell^-$. Focusing on long-distance contributions driven by the lowest-lying hadronic intermediate states, we work out the correlations between these beyond-the-Standard-Model signals and the Dalitz-plot asymmetries in $\eta \rightarrow \pi^0 \pi^+ \pi^-$ and $\eta' \rightarrow \eta \pi^+ \pi^- $, using dispersion theory., Comment: 31 pages, 7 figures
Published: 2023

3. Spin decoherence and off-resonance behavior of radiofrequency-driven spin rotations in storage rings

Author: Nikolaev, N. N., Rathmann, F., Slim, J., Andres, A., Hejny, V., Nass, A., Kacharava, A., Lenisa, P., Pretz, J., Saleev, A., Shmakova, V., Soltner, H., Abusaif, F., Aggarwal, A., Aksentev, A., Alberdi, B., Barion, L., Bekman, I., Beyß, M., Böhme, C., Breitkreutz, B., Canale, N., Ciullo, G., Dymov, S., Fröhlich, N. -O., Gebel, R., Gaisser, M., Grigoryev, K., Grzonka, D., Hetzel, J., Javakhishvili, O., Kamerdzhiev, V., Karanth, S., Keshelashvili, I., Kononov, A., Laihem, K., Lehrach, A., Lomidze, N., Lorentz, B., Macharashvili, G., Magiera, A., Mchedlishvili, D., Melnikov, A., Müller, F., Pesce, A., Poncza, V., Prasuhn, D., Shergelashvili, D., Shurkhno, N., Siddique, S., Silenko, A., Stassen, S., Stephenson, E. J., Ströher, H., Tabidze, M., Tagliente, G., Valdau, Y., Vitz, M., Wagner, T., Wirzba, A., Wrońska, A., Wüstner, P., Żurek, M., Nikolaev, N. N., Rathmann, F., Slim, J., Andres, A., Hejny, V., Nass, A., Kacharava, A., Lenisa, P., Pretz, J., Saleev, A., Shmakova, V., Soltner, H., Abusaif, F., Aggarwal, A., Aksentev, A., Alberdi, B., Barion, L., Bekman, I., Beyß, M., Böhme, C., Breitkreutz, B., Canale, N., Ciullo, G., Dymov, S., Fröhlich, N. -O., Gebel, R., Gaisser, M., Grigoryev, K., Grzonka, D., Hetzel, J., Javakhishvili, O., Kamerdzhiev, V., Karanth, S., Keshelashvili, I., Kononov, A., Laihem, K., Lehrach, A., Lomidze, N., Lorentz, B., Macharashvili, G., Magiera, A., Mchedlishvili, D., Melnikov, A., Müller, F., Pesce, A., Poncza, V., Prasuhn, D., Shergelashvili, D., Shurkhno, N., Siddique, S., Silenko, A., Stassen, S., Stephenson, E. J., Ströher, H., Tabidze, M., Tagliente, G., Valdau, Y., Vitz, M., Wagner, T., Wirzba, A., Wrońska, A., Wüstner, P., and Żurek, M.
Abstract: Radiofrequency-driven resonant spin rotators are routinely used as standard instruments in polarization experiments in particle and nuclear physics. Maintaining the continuous exact parametric spin-resonance condition of the equality of the spin rotator and the spin precession frequency during operation constitutes one of the challenges. We present a detailed analytic description of the impact of detuning the exact spin resonance on the vertical and the in-plane precessing components of the polarization. An important part of the formalism presented here is the consideration of experimentally relevant spin-decoherence effects. We discuss applications of the developed formalism to the interpretation of the experimental data on the novel pilot bunch approach to control the spin-resonance condition during the operation of the radiofrequency-driven Wien filter that is used as a spin rotator in the first direct deuteron electric dipole moment measurement at COSY. We emphasize the potential importance of the hitherto unexplored phase of the envelope of the horizontal polarization as an indicator of the stability of the radiofrequency-driven spin rotations in storage rings. The work presented here serves as a satellite publication to the work published concurrently on the proof of principle experiment about the so-called pilot bunch approach that was developed to provide co-magnetometry for the deuteron electric dipole moment experiment at COSY., Comment: 31 pages, 10 figures, 5 tables
Published: 2023

4. Pilot bunch and co-magnetometry of polarized particles stored in a ring

Author: Slim, J., Rathmann, F., Andres, A., Hejny, V., Nass, A., Kacharava, A., Lenisa, P., Nikolaev, N. N., Pretz, J., Saleev, A., Shmakova, V., Soltner, H., Abusaif, F., Aggarwal, A., Aksentev, A., Alberdi, B., Barion, L., Bekman, I., Beyß, M., Böhme, C., Breitkreutz, B., Canale, N., Ciullo, G., Dymov, S., Fröhlich, N. -O., Gebel, R., Gaisser, M., Grigoryev, K., Grzonka, D., Hetzel, J., Javakhishvili, O., Kamerdzhiev, V., Karanth, S., Keshelashvili, I., Kononov, A., Laihem, K., Lehrach, A., Lomidze, N., Lorentz, B., Macharashvili, G., Magiera, A., Mchedlishvili, D., Melnikov, A., Müller, F., Pesce, A., Poncza, V., Prasuhn, D., Shergelashvili, D., Shurkhno, N., Siddique, S., Silenko, A., Stassen, S., Stephenson, E. J., Ströher, H., Tabidze, M., Tagliente, G., Valdau, Y., Vitz, M., Wagner, T., Wirzba, A., Wrońska, A., Wüstner, P., Żurek, M., Slim, J., Rathmann, F., Andres, A., Hejny, V., Nass, A., Kacharava, A., Lenisa, P., Nikolaev, N. N., Pretz, J., Saleev, A., Shmakova, V., Soltner, H., Abusaif, F., Aggarwal, A., Aksentev, A., Alberdi, B., Barion, L., Bekman, I., Beyß, M., Böhme, C., Breitkreutz, B., Canale, N., Ciullo, G., Dymov, S., Fröhlich, N. -O., Gebel, R., Gaisser, M., Grigoryev, K., Grzonka, D., Hetzel, J., Javakhishvili, O., Kamerdzhiev, V., Karanth, S., Keshelashvili, I., Kononov, A., Laihem, K., Lehrach, A., Lomidze, N., Lorentz, B., Macharashvili, G., Magiera, A., Mchedlishvili, D., Melnikov, A., Müller, F., Pesce, A., Poncza, V., Prasuhn, D., Shergelashvili, D., Shurkhno, N., Siddique, S., Silenko, A., Stassen, S., Stephenson, E. J., Ströher, H., Tabidze, M., Tagliente, G., Valdau, Y., Vitz, M., Wagner, T., Wirzba, A., Wrońska, A., Wüstner, P., and Żurek, M.
Abstract: In polarization experiments at storage rings, one of the challenges is to maintain the spin-resonance condition of a radio-frequency spin rotator with the spin-precessions of the orbiting particles. Time-dependent variations of the magnetic fields of ring elements lead to unwanted variations of the spin precession frequency. We report here on a solution to this problem by shielding (or masking) one of the bunches stored in the ring from the high-frequency fields of the spin rotator, so that the masked pilot bunch acts as a co-magnetometer for the other signal bunch, tracking fluctuations in the ring on a time scale of about one second. While the new method was developed primarily for searches of electric dipole moments of charged particles, it may have far-reaching implications for future spin physics facilities, such as the EIC and NICA., Comment: 5 pages, 3 figures + references + supplemental material (6 pages, 2 figures, 6 tables + references)
Published: 2023

5. $C$ and $CP$ violation in effective field theories

Author: Akdag, Hakan, Kubis, Bastian, Wirzba, Andreas, Akdag, Hakan, Kubis, Bastian, and Wirzba, Andreas
Abstract: The quest for new sources of the simultaneous violation of $C$ and $CP$ symmetry was popular in the 1960s and has since been mostly neglected for more than half a century. In this work we revisit fundamental quark-level operators that break $C$ and $CP$ up to and including mass dimension 8 for flavor-conserving transitions, relying on the complete operator sets of the so-called Standard Model effective field theory and the low-energy effective field theory. With the formalism of chiral perturbation theory, we match these quark operators to light-meson physics, derive $C$- and $CP$-odd Lagrangians for several processes in the $\eta$, $\eta'$, and pion sectors, and furthermore, as a proof of principle, give estimates for the respective observables in explicit dependence of the underlying high-energy scale for new physics., Comment: 76 pages, 1 figure, 12 tables; v2: discussion extended, references added, version published in JHEP
Published: 2022
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6. First Search for Axion-Like Particles in a Storage Ring Using a Polarized Deuteron Beam

Author: Karanth, Swathi, Stephenson, Edward J., Chang, Seung Pyo, Hejny, Volker, Pretz, Jörg, Semertzidis, Yannis K., Wirzba, Andreas, Wrońska, Aleksandra, Abusaif, Falastine, Aksentev, A., Alberdi, Benat, Aggarwal, Anjali, Andres, Achim, Barion, Luca, Bekman, Ilja, Beyss, M., Böhme, Christian, Breitkreutz, B., von Byern, C., Canale, Nicola, Ciullo, Guiseppe, Dymov, Sergey, Fröhlich, Nils-Oliver, Gebel, Ralf, Grigoryev, Kirill, Grzonka, Dieter, Hetzel, Jan, Javakhishvili, Otari, Jeong, Hoyong, Kacharava, Andro, Kamerdzhiev, Vsevolod, Keshelashvili, Irakli, Kononov, A., Laihem, Karim, Lehrach, Andreas, Lenisa, Paolo, Lomidze, Nodar, Lorantz, Bernd, Magiera, Andrzej, Mchedlishvili, David, Müller, Fabian, Nass, Alexander, Nikolaev, Nikolay N., Park, Seongtae, Pesce, Andrea, Ponzca, Vera, Prasuhn, Dieter, Rathmann, Frank, Saddique, Saad, Saleev, Artem, Shurkno, N., Shergelaskvili, Dito, Shmakova, Vera, Slim, Jamal, Soltner, Helmut, Stassen, Rolf, Ströher, Hans, Tabidze, Mirian, Tagliente, Giuseppe, Valdau, Yuri, Vitz, Maximilian, Wagner, Tim, Wüstner, Peter, Karanth, Swathi, Stephenson, Edward J., Chang, Seung Pyo, Hejny, Volker, Pretz, Jörg, Semertzidis, Yannis K., Wirzba, Andreas, Wrońska, Aleksandra, Abusaif, Falastine, Aksentev, A., Alberdi, Benat, Aggarwal, Anjali, Andres, Achim, Barion, Luca, Bekman, Ilja, Beyss, M., Böhme, Christian, Breitkreutz, B., von Byern, C., Canale, Nicola, Ciullo, Guiseppe, Dymov, Sergey, Fröhlich, Nils-Oliver, Gebel, Ralf, Grigoryev, Kirill, Grzonka, Dieter, Hetzel, Jan, Javakhishvili, Otari, Jeong, Hoyong, Kacharava, Andro, Kamerdzhiev, Vsevolod, Keshelashvili, Irakli, Kononov, A., Laihem, Karim, Lehrach, Andreas, Lenisa, Paolo, Lomidze, Nodar, Lorantz, Bernd, Magiera, Andrzej, Mchedlishvili, David, Müller, Fabian, Nass, Alexander, Nikolaev, Nikolay N., Park, Seongtae, Pesce, Andrea, Ponzca, Vera, Prasuhn, Dieter, Rathmann, Frank, Saddique, Saad, Saleev, Artem, Shurkno, N., Shergelaskvili, Dito, Shmakova, Vera, Slim, Jamal, Soltner, Helmut, Stassen, Rolf, Ströher, Hans, Tabidze, Mirian, Tagliente, Giuseppe, Valdau, Yuri, Vitz, Maximilian, Wagner, Tim, and Wüstner, Peter
Abstract: Based on the notion that the local dark-matter field of axions or axion-like particles (ALPs) in our Galaxy induces oscillating couplings to the spins of nucleons and nuclei (via the electric dipole moment of the latter and/or the paramagnetic axion-wind effect), we establish the feasibility of a new method to search for ALPs in storage rings. Based on previous work that allows us to maintain the in-plane polarization of a stored deuteron beam for a few hundred seconds, we performed a first proof-of-principle experiment at the Cooler Synchrotron COSY to scan momenta near 970 MeV/c. This entailed a scan of the spin precession frequency. At resonance between the spin precession frequency of deuterons and the ALP-induced EDM oscillation frequency there will be an accumulation of the polarization component out of the ring plane. Since the axion frequency is unknown, the momentum of the beam and consequently the spin precession frequency were ramped to search for a vertical polarization change that would occur when the resonance is crossed. At COSY, four beam bunches with different polarization directions were used to make sure that no resonance was missed because of the unknown relative phase between the polarization precession and the axion/ALP field. A frequency window of 1.5-kHz width around the spin precession frequency of 121 kHz was scanned. We describe the experimental procedure and a test of the methodology with the help of a radiofrequency Wien filter located on the COSY ring. No ALP resonance was observed. As a consequence an upper limit of the oscillating EDM component of the deuteron as well as its axion coupling constants are provided., Comment: 27 pages, 24 figures, 7 tables, 104 references
Published: 2022
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7. Quantum mechanics of radiofrequency-driven coherent beam oscillations in storage rings

Author: Slim, J., Nikolaev, N. N., Rathmann, F., Wirzba, A., Slim, J., Nikolaev, N. N., Rathmann, F., and Wirzba, A.
Abstract: Precision searches for the electric dipole moment of protons in storage ring experiments call for beam-position monitoring in the picometer range. We present the relevant fully quantum mechanical derivation of radiofrequency-driven collective oscillations of a beam in a storage ring., Comment: 5 pages
Published: 2021

8. Storage Ring to Search for Electric Dipole Moments of Charged Particles -- Feasibility Study

Author: Abusaif, F., Aggarwal, A., Aksentev, A., Alberdi-Esuain, B., Andres, A., Atanasov, A., Barion, L., Basile, S., Berz, M., Böhme, C., Böker, J., Borburgh, J., Canale, N., Carli, C., Ciepał, I., Ciullo, G., Contalbrigo, M., De Conto, J. -M., Dymov, S., Felden, O., Gaisser, M., Gebel, R., Giese, N., Gooding, J., Grigoryev, K., Grzonka, D., Tahar, M. Haj, Hahnraths, T., Heberling, D., Hejny, V., Hetzel, J., Hölscher, D., Javakhishvili, O., Jorat, L., Kacharava, A., Kamerdzhiev, V., Karanth, S., Keshelashvili, I., Koop, I., Kulikov, A., Laihem, K., Lamont, M., Lehrach, A., Lenisa, P., Lomidze, I., Lomidze, N., Lorentz, B., Macharashvili, G., Magiera, A., Makino, K., Martin, S., Mchedlishvili, D., Meißner, U. -G., Metreveli, Z., Michaud, J., Müller, F., Nass, A., Natour, G., Nikolaev, N., Nogga, A., Okropiridze, D., Pesce, A., Poncza, V., Prasuhn, D., Pretz, J., Rathmann, F., Ritman, J., Rosenthal, M., Saleev, A., Schott, M., Sefzick, T., Senichev, Y., Shankar, R., Shergelashvili, D., Shmakova, V., Siddique, S., Silenko, A., Simon, M., Slim, J., Soltner, H., Stahl, A., Stassen, R., Stephenson, E., Straatmann, H., Ströher, H., Tabidze, M., Tagliente, G., Talman, R., Uzikov, Y., Valdau, Y., Valetov, E., Vilella, E., Vitz, M., Vossebeld, J., Wagner, T., Weidemann, C., Wirzba, A., Wrońska, A., Wüstner, P., Zupranski, P., Żurek, M., Abusaif, F., Aggarwal, A., Aksentev, A., Alberdi-Esuain, B., Andres, A., Atanasov, A., Barion, L., Basile, S., Berz, M., Böhme, C., Böker, J., Borburgh, J., Canale, N., Carli, C., Ciepał, I., Ciullo, G., Contalbrigo, M., De Conto, J. -M., Dymov, S., Felden, O., Gaisser, M., Gebel, R., Giese, N., Gooding, J., Grigoryev, K., Grzonka, D., Tahar, M. Haj, Hahnraths, T., Heberling, D., Hejny, V., Hetzel, J., Hölscher, D., Javakhishvili, O., Jorat, L., Kacharava, A., Kamerdzhiev, V., Karanth, S., Keshelashvili, I., Koop, I., Kulikov, A., Laihem, K., Lamont, M., Lehrach, A., Lenisa, P., Lomidze, I., Lomidze, N., Lorentz, B., Macharashvili, G., Magiera, A., Makino, K., Martin, S., Mchedlishvili, D., Meißner, U. -G., Metreveli, Z., Michaud, J., Müller, F., Nass, A., Natour, G., Nikolaev, N., Nogga, A., Okropiridze, D., Pesce, A., Poncza, V., Prasuhn, D., Pretz, J., Rathmann, F., Ritman, J., Rosenthal, M., Saleev, A., Schott, M., Sefzick, T., Senichev, Y., Shankar, R., Shergelashvili, D., Shmakova, V., Siddique, S., Silenko, A., Simon, M., Slim, J., Soltner, H., Stahl, A., Stassen, R., Stephenson, E., Straatmann, H., Ströher, H., Tabidze, M., Tagliente, G., Talman, R., Uzikov, Y., Valdau, Y., Valetov, E., Vilella, E., Vitz, M., Vossebeld, J., Wagner, T., Weidemann, C., Wirzba, A., Wrońska, A., Wüstner, P., Zupranski, P., and Żurek, M.
Abstract: The proposed method exploits charged particles confined as a storage ring beam (proton, deuteron, possibly $^3$He) to search for an intrinsic electric dipole moment (EDM) aligned along the particle spin axis. Statistical sensitivities could approach 10$^{-29}$ e$\cdot$cm. The challenge will be to reduce systematic errors to similar levels. The ring will be adjusted to preserve the spin polarisation, initially parallel to the particle velocity, for times in excess of 15 minutes. Large radial electric fields, acting through the EDM, will rotate the polarisation from the longitudinal to the vertical direction. The slow rise in the vertical polarisation component, detected through scattering from a target, signals the EDM. The project strategy is outlined. A stepwise plan is foreseen, starting with ongoing COSY activities that demonstrate technical feasibility. Achievements to date include reduced polarization measurement errors, long horizontal plane polarization lifetimes, and control of the polarization direction through feedback from scattering measurements. The project continues with a proof-of-capability measurement (precursor experiment; first direct deuteron EDM measurement), an intermediate prototype ring (proof-of-principle; demonstrator for key technologies), and finally a high-precision electric-field storage ring., Comment: 243 pages
Published: 2019
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9. Search for C violation in the decay eta -> pi(0)e(+)e(-) with WASA-at-COSY

Author: Adlarson, Patrik, Collaboration, WASA-at-COSY, Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berlowski, M., Bondar, A., Buescher, M., Calén, Hans, Ciepal, I., Clement, H., Czerwinski, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, R., Foehl, K., Fransson, Kjell, Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, Carl-Oskar, Heijkenskjöld, Lena, Hejny, V., Huesken, N., Jarczyk, L., Johansson, Tord, Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Klos, B., Krzemien, W., Kulessa, R., Kupsc, Andrzej, Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, Pawel, Marianski, B., Morsch, H. -P, Moskal, R., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, Damian, Pysz, K., Pyszniak, Andzej, Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schatti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Stroeher, H., Szczurek, A., Trzcinski, A., Wolke, Magnus, Wronska, A., Wuestner, R., Yamamoto, A., Zabierowski, J., Zielinski, M. J., Zlomanczuk, Jozef, Zupranski, R., Zurek, M., Wirzba, A., Adlarson, Patrik, Collaboration, WASA-at-COSY, Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berlowski, M., Bondar, A., Buescher, M., Calén, Hans, Ciepal, I., Clement, H., Czerwinski, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, R., Foehl, K., Fransson, Kjell, Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, Carl-Oskar, Heijkenskjöld, Lena, Hejny, V., Huesken, N., Jarczyk, L., Johansson, Tord, Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Klos, B., Krzemien, W., Kulessa, R., Kupsc, Andrzej, Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, Pawel, Marianski, B., Morsch, H. -P, Moskal, R., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, Damian, Pysz, K., Pyszniak, Andzej, Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schatti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Stroeher, H., Szczurek, A., Trzcinski, A., Wolke, Magnus, Wronska, A., Wuestner, R., Yamamoto, A., Zabierowski, J., Zielinski, M. J., Zlomanczuk, Jozef, Zupranski, R., Zurek, M., and Wirzba, A.
Abstract: We report on the search for the rare decay eta -> pi(0)e(+)e(-) which is of interest to study C violation in the electromagnetic interaction which would indicate contributions from physics beyond the Standard Model, since the allowed decay via a two-photon intermediate state is strongly suppressed. The experiment has been performed using the WASA-at-COSY installation, located at the COSY accelerator of the Forschungszentrum Julich, Germany. In total 3 x 10(7) events of the reaction pd -> He-3 eta have been recorded at an excess energy of Q = 59.8MeV. Based on this data set the C parity violating decay eta -> pi(0)gamma* -> pi(0)e(+)e(-) via a single-photon intermediate state has been searched for, resulting in new upper limits of Gamma(eta -> pi(0)e(+) e(-))/Gamma(eta -> pi(+) pi(-) pi(0)) < 3.28 x 10(-5) and Gamma(eta -> pi(0)e(+) e(-))/Gamma(eta -> all)< 7.5 x 10(-6) (CL=90%), respectively.
Published: 2018
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10. Erratum to: The branching ratio omega ->pi(+) pi(-) revisited

Author: Hanhart, C., Holz, S., Kubis, B., Kupść, Andrzej, Wirzba, A., Xiao, C. W., Hanhart, C., Holz, S., Kubis, B., Kupść, Andrzej, Wirzba, A., and Xiao, C. W.
Abstract: Correction to: European Physical Journal C, vol. 77, issue 2, article number: 98.DOI: 10.1140/epjc/s10052-017-4651-x
Published: 2018
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11. Erratum to: The branching ratio omega ->pi(+) pi(-) revisited

Author: Hanhart, C., Holz, S., Kubis, B., Kupść, Andrzej, Wirzba, A., Xiao, C. W., Hanhart, C., Holz, S., Kubis, B., Kupść, Andrzej, Wirzba, A., and Xiao, C. W.
Abstract: Correction to: European Physical Journal C, vol. 77, issue 2, article number: 98.DOI: 10.1140/epjc/s10052-017-4651-x
Published: 2018
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12. Search for C violation in the decay eta -> pi(0)e(+)e(-) with WASA-at-COSY

Author: Adlarson, Patrik, Collaboration, WASA-at-COSY, Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berlowski, M., Bondar, A., Buescher, M., Calén, Hans, Ciepal, I., Clement, H., Czerwinski, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, R., Foehl, K., Fransson, Kjell, Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, Carl-Oskar, Heijkenskjöld, Lena, Hejny, V., Huesken, N., Jarczyk, L., Johansson, Tord, Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Klos, B., Krzemien, W., Kulessa, R., Kupsc, Andrzej, Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, Pawel, Marianski, B., Morsch, H. -P, Moskal, R., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, Damian, Pysz, K., Pyszniak, Andzej, Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schatti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Stroeher, H., Szczurek, A., Trzcinski, A., Wolke, Magnus, Wronska, A., Wuestner, R., Yamamoto, A., Zabierowski, J., Zielinski, M. J., Zlomanczuk, Jozef, Zupranski, R., Zurek, M., Wirzba, A., Adlarson, Patrik, Collaboration, WASA-at-COSY, Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berlowski, M., Bondar, A., Buescher, M., Calén, Hans, Ciepal, I., Clement, H., Czerwinski, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, R., Foehl, K., Fransson, Kjell, Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, Carl-Oskar, Heijkenskjöld, Lena, Hejny, V., Huesken, N., Jarczyk, L., Johansson, Tord, Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Klos, B., Krzemien, W., Kulessa, R., Kupsc, Andrzej, Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, Pawel, Marianski, B., Morsch, H. -P, Moskal, R., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, Damian, Pysz, K., Pyszniak, Andzej, Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schatti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Stroeher, H., Szczurek, A., Trzcinski, A., Wolke, Magnus, Wronska, A., Wuestner, R., Yamamoto, A., Zabierowski, J., Zielinski, M. J., Zlomanczuk, Jozef, Zupranski, R., Zurek, M., and Wirzba, A.
Abstract: We report on the search for the rare decay eta -> pi(0)e(+)e(-) which is of interest to study C violation in the electromagnetic interaction which would indicate contributions from physics beyond the Standard Model, since the allowed decay via a two-photon intermediate state is strongly suppressed. The experiment has been performed using the WASA-at-COSY installation, located at the COSY accelerator of the Forschungszentrum Julich, Germany. In total 3 x 10(7) events of the reaction pd -> He-3 eta have been recorded at an excess energy of Q = 59.8MeV. Based on this data set the C parity violating decay eta -> pi(0)gamma* -> pi(0)e(+)e(-) via a single-photon intermediate state has been searched for, resulting in new upper limits of Gamma(eta -> pi(0)e(+) e(-))/Gamma(eta -> pi(+) pi(-) pi(0)) < 3.28 x 10(-5) and Gamma(eta -> pi(0)e(+) e(-))/Gamma(eta -> all)< 7.5 x 10(-6) (CL=90%), respectively.
Published: 2018
Full Text: View/download PDF

13. Search for C violation in the decay eta -> pi(0)e(+)e(-) with WASA-at-COSY

Author: Adlarson, Patrik, Collaboration, WASA-at-COSY, Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berlowski, M., Bondar, A., Buescher, M., Calén, Hans, Ciepal, I., Clement, H., Czerwinski, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, R., Foehl, K., Fransson, Kjell, Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, Carl-Oskar, Heijkenskjöld, Lena, Hejny, V., Huesken, N., Jarczyk, L., Johansson, Tord, Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Klos, B., Krzemien, W., Kulessa, R., Kupsc, Andrzej, Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, Pawel, Marianski, B., Morsch, H. -P, Moskal, R., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, Damian, Pysz, K., Pyszniak, Andzej, Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schatti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Stroeher, H., Szczurek, A., Trzcinski, A., Wolke, Magnus, Wronska, A., Wuestner, R., Yamamoto, A., Zabierowski, J., Zielinski, M. J., Zlomanczuk, Jozef, Zupranski, R., Zurek, M., Wirzba, A., Adlarson, Patrik, Collaboration, WASA-at-COSY, Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berlowski, M., Bondar, A., Buescher, M., Calén, Hans, Ciepal, I., Clement, H., Czerwinski, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, R., Foehl, K., Fransson, Kjell, Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, Carl-Oskar, Heijkenskjöld, Lena, Hejny, V., Huesken, N., Jarczyk, L., Johansson, Tord, Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Klos, B., Krzemien, W., Kulessa, R., Kupsc, Andrzej, Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, Pawel, Marianski, B., Morsch, H. -P, Moskal, R., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, Damian, Pysz, K., Pyszniak, Andzej, Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schatti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Stroeher, H., Szczurek, A., Trzcinski, A., Wolke, Magnus, Wronska, A., Wuestner, R., Yamamoto, A., Zabierowski, J., Zielinski, M. J., Zlomanczuk, Jozef, Zupranski, R., Zurek, M., and Wirzba, A.
Abstract: We report on the search for the rare decay eta -> pi(0)e(+)e(-) which is of interest to study C violation in the electromagnetic interaction which would indicate contributions from physics beyond the Standard Model, since the allowed decay via a two-photon intermediate state is strongly suppressed. The experiment has been performed using the WASA-at-COSY installation, located at the COSY accelerator of the Forschungszentrum Julich, Germany. In total 3 x 10(7) events of the reaction pd -> He-3 eta have been recorded at an excess energy of Q = 59.8MeV. Based on this data set the C parity violating decay eta -> pi(0)gamma* -> pi(0)e(+)e(-) via a single-photon intermediate state has been searched for, resulting in new upper limits of Gamma(eta -> pi(0)e(+) e(-))/Gamma(eta -> pi(+) pi(-) pi(0)) < 3.28 x 10(-5) and Gamma(eta -> pi(0)e(+) e(-))/Gamma(eta -> all)< 7.5 x 10(-6) (CL=90%), respectively.
Published: 2018
Full Text: View/download PDF

14. Erratum to: The branching ratio omega ->pi(+) pi(-) revisited

Author: Hanhart, C., Holz, S., Kubis, B., Kupść, Andrzej, Wirzba, A., Xiao, C. W., Hanhart, C., Holz, S., Kubis, B., Kupść, Andrzej, Wirzba, A., and Xiao, C. W.
Abstract: Correction to: European Physical Journal C, vol. 77, issue 2, article number: 98.DOI: 10.1140/epjc/s10052-017-4651-x
Published: 2018
Full Text: View/download PDF

15. Global access of patients with kidney disease to health technologies and medications: findings from the Global Kidney Health Atlas project.

Author: Htay, Htay, Htay, Htay, Alrukhaimi, Mona, Ashuntantang, Gloria E, Bello, Aminu K, Bellorin-Font, Ezequiel, Benghanem Gharbi, Mohammed, Braam, Branko, Feehally, John, Harris, David C, Jha, Vivekanand, Jindal, Kailash, Kalantar-Zadeh, Kamyar, Kazancioglu, Rumeyza, Kerr, Peter G, Levin, Adeera, Lunney, Meaghan, Okpechi, Ikechi G, Olah, Michelle E, Olanrewaju, Timothy Olusegun, Osman, Mohamed A, Parpia, Yasin, Perl, Jeffrey, Qarni, Bilal, Rashid, Harun Ur, Rateb, Ahmed, Rondeau, Eric, Salako, Babatunde Lawal, Sola, Laura, Tchokhonelidze, Irma, Tonelli, Marcello, Wiebe, Natasha, Wirzba, Isaac, Yang, Chih-Wei, Ye, Feng, Zemchenkov, Alexander, Zhao, Ming-Hui, Johnson, David W, Htay, Htay, Htay, Htay, Alrukhaimi, Mona, Ashuntantang, Gloria E, Bello, Aminu K, Bellorin-Font, Ezequiel, Benghanem Gharbi, Mohammed, Braam, Branko, Feehally, John, Harris, David C, Jha, Vivekanand, Jindal, Kailash, Kalantar-Zadeh, Kamyar, Kazancioglu, Rumeyza, Kerr, Peter G, Levin, Adeera, Lunney, Meaghan, Okpechi, Ikechi G, Olah, Michelle E, Olanrewaju, Timothy Olusegun, Osman, Mohamed A, Parpia, Yasin, Perl, Jeffrey, Qarni, Bilal, Rashid, Harun Ur, Rateb, Ahmed, Rondeau, Eric, Salako, Babatunde Lawal, Sola, Laura, Tchokhonelidze, Irma, Tonelli, Marcello, Wiebe, Natasha, Wirzba, Isaac, Yang, Chih-Wei, Ye, Feng, Zemchenkov, Alexander, Zhao, Ming-Hui, and Johnson, David W
Abstract: Access to essential medications and health products is critical to effective management of kidney disease. Using data from the ISN Global Kidney Health Atlas multinational cross-sectional survey, global access of patients with kidney disease to essential medications and health products was examined. Overall, 125 countries participated, with 118 countries, composing 91.5% of the world's population, providing data on this domain. Most countries were unable to access eGFR and albuminuria in their primary care settings. Only one-third of low-income countries (LICs) were able to measure serum creatinine and none were able to access eGFR or quantify proteinuria. The ability to monitor diabetes mellitus through serum glucose and glycated hemoglobin measurements was suboptimal. Pathology services were rarely available in tertiary care in LICs (12%) and lower middle-income countries (45%). While acute and chronic hemodialysis services were available in almost all countries, acute and chronic peritoneal dialysis services were rarely available in LICs (18% and 29%, respectively). Kidney transplantation was available in 79% of countries overall and in 12% of LICs. While over one-half of all countries publicly funded RRT and kidney medications with or without copayment, this was less common in LICs and lower middle-income countries. In conclusion, this study demonstrated significant gaps in services for kidney care and funding that were most apparent in LICs and lower middle-income countries.
Published: 2018

16. Global access of patients with kidney disease to health technologies and medications: findings from the Global Kidney Health Atlas project.

Author: Htay, Htay, Htay, Htay, Alrukhaimi, Mona, Ashuntantang, Gloria E, Bello, Aminu K, Bellorin-Font, Ezequiel, Benghanem Gharbi, Mohammed, Braam, Branko, Feehally, John, Harris, David C, Jha, Vivekanand, Jindal, Kailash, Kalantar-Zadeh, Kamyar, Kazancioglu, Rumeyza, Kerr, Peter G, Levin, Adeera, Lunney, Meaghan, Okpechi, Ikechi G, Olah, Michelle E, Olanrewaju, Timothy Olusegun, Osman, Mohamed A, Parpia, Yasin, Perl, Jeffrey, Qarni, Bilal, Rashid, Harun Ur, Rateb, Ahmed, Rondeau, Eric, Salako, Babatunde Lawal, Sola, Laura, Tchokhonelidze, Irma, Tonelli, Marcello, Wiebe, Natasha, Wirzba, Isaac, Yang, Chih-Wei, Ye, Feng, Zemchenkov, Alexander, Zhao, Ming-Hui, Johnson, David W, Htay, Htay, Htay, Htay, Alrukhaimi, Mona, Ashuntantang, Gloria E, Bello, Aminu K, Bellorin-Font, Ezequiel, Benghanem Gharbi, Mohammed, Braam, Branko, Feehally, John, Harris, David C, Jha, Vivekanand, Jindal, Kailash, Kalantar-Zadeh, Kamyar, Kazancioglu, Rumeyza, Kerr, Peter G, Levin, Adeera, Lunney, Meaghan, Okpechi, Ikechi G, Olah, Michelle E, Olanrewaju, Timothy Olusegun, Osman, Mohamed A, Parpia, Yasin, Perl, Jeffrey, Qarni, Bilal, Rashid, Harun Ur, Rateb, Ahmed, Rondeau, Eric, Salako, Babatunde Lawal, Sola, Laura, Tchokhonelidze, Irma, Tonelli, Marcello, Wiebe, Natasha, Wirzba, Isaac, Yang, Chih-Wei, Ye, Feng, Zemchenkov, Alexander, Zhao, Ming-Hui, and Johnson, David W
Abstract: Access to essential medications and health products is critical to effective management of kidney disease. Using data from the ISN Global Kidney Health Atlas multinational cross-sectional survey, global access of patients with kidney disease to essential medications and health products was examined. Overall, 125 countries participated, with 118 countries, composing 91.5% of the world's population, providing data on this domain. Most countries were unable to access eGFR and albuminuria in their primary care settings. Only one-third of low-income countries (LICs) were able to measure serum creatinine and none were able to access eGFR or quantify proteinuria. The ability to monitor diabetes mellitus through serum glucose and glycated hemoglobin measurements was suboptimal. Pathology services were rarely available in tertiary care in LICs (12%) and lower middle-income countries (45%). While acute and chronic hemodialysis services were available in almost all countries, acute and chronic peritoneal dialysis services were rarely available in LICs (18% and 29%, respectively). Kidney transplantation was available in 79% of countries overall and in 12% of LICs. While over one-half of all countries publicly funded RRT and kidney medications with or without copayment, this was less common in LICs and lower middle-income countries. In conclusion, this study demonstrated significant gaps in services for kidney care and funding that were most apparent in LICs and lower middle-income countries.
Published: 2018

17. Global access of patients with kidney disease to health technologies and medications: findings from the Global Kidney Health Atlas project.

Author: Wiebe N., Sola L., Tchokhonelidze I., Tonelli M., Wirzba I., Yang C.-W., Ye F., Zemchenkov A., Zhao M.-H., Johnson D.W., Htay H., Alrukhaimi M., Ashuntantang G.E., Bello A.K., Bellorin-Font E., Benghanem Gharbi M., Braam B., Feehally J., Harris D.C., Jha V., Jindal K., Kalantar-Zadeh K., Kazancioglu R., Kerr P.G., Levin A., Lunney M., Okpechi I.G., Olah M.E., Olanrewaju T.O., Osman M.A., Parpia Y., Perl J., Qarni B., Rashid H.U., Rateb A., Rondeau E., Salako B.L., Wiebe N., Sola L., Tchokhonelidze I., Tonelli M., Wirzba I., Yang C.-W., Ye F., Zemchenkov A., Zhao M.-H., Johnson D.W., Htay H., Alrukhaimi M., Ashuntantang G.E., Bello A.K., Bellorin-Font E., Benghanem Gharbi M., Braam B., Feehally J., Harris D.C., Jha V., Jindal K., Kalantar-Zadeh K., Kazancioglu R., Kerr P.G., Levin A., Lunney M., Okpechi I.G., Olah M.E., Olanrewaju T.O., Osman M.A., Parpia Y., Perl J., Qarni B., Rashid H.U., Rateb A., Rondeau E., and Salako B.L.
Abstract: Access to essential medications and health products is critical to effective management of kidney disease. Using data from the ISN Global Kidney Health Atlas multinational cross-sectional survey, global access of patients with kidney disease to essential medications and health products was examined. Overall, 125 countries participated, with 118 countries, composing 91.5% of the world's population, providing data on this domain. Most countries were unable to access eGFR and albuminuria in their primary care settings. Only one-third of low-income countries (LICs) were able to measure serum creatinine and none were able to access eGFR or quantify proteinuria. The ability to monitor diabetes mellitus through serum glucose and glycated hemoglobin measurements was suboptimal. Pathology services were rarely available in tertiary care in LICs (12%) and lower middle-income countries (45%). While acute and chronic hemodialysis services were available in almost all countries, acute and chronic peritoneal dialysis services were rarely available in LICs (18% and 29%, respectively). Kidney transplantation was available in 79% of countries overall and in 12% of LICs. While over one-half of all countries publicly funded RRT and kidney medications with or without copayment, this was less common in LICs and lower middle-income countries. In conclusion, this study demonstrated significant gaps in services for kidney care and funding that were most apparent in LICs and lower middle-income countries.Copyright © 2017
Published: 2018

18. Global access of patients with kidney disease to health technologies and medications: findings from the Global Kidney Health Atlas project.

Author: Htay, Htay, Htay, Htay, Alrukhaimi, Mona, Ashuntantang, Gloria E, Bello, Aminu K, Bellorin-Font, Ezequiel, Benghanem Gharbi, Mohammed, Braam, Branko, Feehally, John, Harris, David C, Jha, Vivekanand, Jindal, Kailash, Kalantar-Zadeh, Kamyar, Kazancioglu, Rumeyza, Kerr, Peter G, Levin, Adeera, Lunney, Meaghan, Okpechi, Ikechi G, Olah, Michelle E, Olanrewaju, Timothy Olusegun, Osman, Mohamed A, Parpia, Yasin, Perl, Jeffrey, Qarni, Bilal, Rashid, Harun Ur, Rateb, Ahmed, Rondeau, Eric, Salako, Babatunde Lawal, Sola, Laura, Tchokhonelidze, Irma, Tonelli, Marcello, Wiebe, Natasha, Wirzba, Isaac, Yang, Chih-Wei, Ye, Feng, Zemchenkov, Alexander, Zhao, Ming-Hui, Johnson, David W, Htay, Htay, Htay, Htay, Alrukhaimi, Mona, Ashuntantang, Gloria E, Bello, Aminu K, Bellorin-Font, Ezequiel, Benghanem Gharbi, Mohammed, Braam, Branko, Feehally, John, Harris, David C, Jha, Vivekanand, Jindal, Kailash, Kalantar-Zadeh, Kamyar, Kazancioglu, Rumeyza, Kerr, Peter G, Levin, Adeera, Lunney, Meaghan, Okpechi, Ikechi G, Olah, Michelle E, Olanrewaju, Timothy Olusegun, Osman, Mohamed A, Parpia, Yasin, Perl, Jeffrey, Qarni, Bilal, Rashid, Harun Ur, Rateb, Ahmed, Rondeau, Eric, Salako, Babatunde Lawal, Sola, Laura, Tchokhonelidze, Irma, Tonelli, Marcello, Wiebe, Natasha, Wirzba, Isaac, Yang, Chih-Wei, Ye, Feng, Zemchenkov, Alexander, Zhao, Ming-Hui, and Johnson, David W
Abstract: Access to essential medications and health products is critical to effective management of kidney disease. Using data from the ISN Global Kidney Health Atlas multinational cross-sectional survey, global access of patients with kidney disease to essential medications and health products was examined. Overall, 125 countries participated, with 118 countries, composing 91.5% of the world's population, providing data on this domain. Most countries were unable to access eGFR and albuminuria in their primary care settings. Only one-third of low-income countries (LICs) were able to measure serum creatinine and none were able to access eGFR or quantify proteinuria. The ability to monitor diabetes mellitus through serum glucose and glycated hemoglobin measurements was suboptimal. Pathology services were rarely available in tertiary care in LICs (12%) and lower middle-income countries (45%). While acute and chronic hemodialysis services were available in almost all countries, acute and chronic peritoneal dialysis services were rarely available in LICs (18% and 29%, respectively). Kidney transplantation was available in 79% of countries overall and in 12% of LICs. While over one-half of all countries publicly funded RRT and kidney medications with or without copayment, this was less common in LICs and lower middle-income countries. In conclusion, this study demonstrated significant gaps in services for kidney care and funding that were most apparent in LICs and lower middle-income countries.
Published: 2018

19. Erratum to: The branching ratio omega ->pi(+) pi(-) revisited

Author: Hanhart, C., Holz, S., Kubis, B., Kupść, Andrzej, Wirzba, A., Xiao, C. W., Hanhart, C., Holz, S., Kubis, B., Kupść, Andrzej, Wirzba, A., and Xiao, C. W.
Abstract: Correction to: European Physical Journal C, vol. 77, issue 2, article number: 98.DOI: 10.1140/epjc/s10052-017-4651-x
Published: 2018
Full Text: View/download PDF

20. Erratum to: The branching ratio omega ->pi(+) pi(-) revisited

Author: Hanhart, C., Holz, S., Kubis, B., Kupść, Andrzej, Wirzba, A., Xiao, C. W., Hanhart, C., Holz, S., Kubis, B., Kupść, Andrzej, Wirzba, A., and Xiao, C. W.
Abstract: Correction to: European Physical Journal C, vol. 77, issue 2, article number: 98.DOI: 10.1140/epjc/s10052-017-4651-x
Published: 2018
Full Text: View/download PDF

21. Search for $C$ violation in the decay $\eta\rightarrow\pi^0+e^++e^-$ with WASA-at-COSY

Author: Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berłowski, M., Bondar, A., Büscher, M., Calén, H., Ciepał, I., Clement, H., Czerwiński, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, C. -O., Hanhart, C., Heijkenskjöld, L., Hejny, V., Hüsken, N., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Kłos, B., Krzemień, W., Kulessa, P., Kupść, A., Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Mariański, B., Morsch, H. -P., Moskal, P., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, D., Pysz, K., Pyszniak, A., Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schätti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Trzciński, A., Wolke, M., Wrońska, A., Wüstner, P., Yamamoto, A., Zabierowski, J., Zieliński, M. J., Złomańczuk, J., Żuprański, P., Żurek, M., Wirzba, A., Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berłowski, M., Bondar, A., Büscher, M., Calén, H., Ciepał, I., Clement, H., Czerwiński, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, C. -O., Hanhart, C., Heijkenskjöld, L., Hejny, V., Hüsken, N., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Kłos, B., Krzemień, W., Kulessa, P., Kupść, A., Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Mariański, B., Morsch, H. -P., Moskal, P., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, D., Pysz, K., Pyszniak, A., Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schätti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Trzciński, A., Wolke, M., Wrońska, A., Wüstner, P., Yamamoto, A., Zabierowski, J., Zieliński, M. J., Złomańczuk, J., Żuprański, P., Żurek, M., and Wirzba, A.
Abstract: We report on the investigation of the rare decay $\eta\rightarrow\pi^0+\text{e}^++\text{e}^-$ which is of interest to study both $C$ violation in the electromagnetic interaction and to search for contributions from physics beyond the Standard Model, since the allowed decay via a two-photon intermediate state is strongly suppressed. The experiment has been performed using the WASA-at-COSY installation, located at the COSY accelerator of the Forschungszentrum J\"ulich, Germany. In total $3\times10^7$ events of the reaction $\text{p}+\text{d}\rightarrow{^3\text{He}}+\eta$ have been recorded at an excess energy of $Q = 59.8\,\textrm{MeV}$. Based on this data set the $C$ parity violating decay $\eta\rightarrow\pi^0+\gamma^*\rightarrow\pi^0+\textrm{e}^++\textrm{e}^-$ via a single-photon intermediate state has been searched for, resulting in new upper limits of $\Gamma\left(\eta\rightarrow\pi^0+\textrm{e}^++\textrm{e}^-\right)/ \Gamma\left(\eta\rightarrow\pi^++\pi^-+\pi^0\right) < 3.28\times10^{-5}$ and $\Gamma\left(\eta\rightarrow\pi^0+\textrm{e}^++\textrm{e}^-\right)/ \Gamma\left(\eta\rightarrow\textrm{all}\right) < 7.5\times10^{-6}\ (\textrm{CL} = 90\,\%)$, respectively., Comment: 7 pages, 8 figures, submitted to PLB
Published: 2018
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22. Search for C violation in the decay eta -> pi(0)e(+)e(-) with WASA-at-COSY

Author: Adlarson, Patrik, Collaboration, WASA-at-COSY, Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berlowski, M., Bondar, A., Buescher, M., Calén, Hans, Ciepal, I., Clement, H., Czerwinski, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, R., Foehl, K., Fransson, Kjell, Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, Carl-Oskar, Heijkenskjöld, Lena, Hejny, V., Huesken, N., Jarczyk, L., Johansson, Tord, Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Klos, B., Krzemien, W., Kulessa, R., Kupsc, Andrzej, Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, Pawel, Marianski, B., Morsch, H. -P, Moskal, R., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, Damian, Pysz, K., Pyszniak, Andzej, Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schatti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Stroeher, H., Szczurek, A., Trzcinski, A., Wolke, Magnus, Wronska, A., Wuestner, R., Yamamoto, A., Zabierowski, J., Zielinski, M. J., Zlomanczuk, Jozef, Zupranski, R., Zurek, M., Wirzba, A., Adlarson, Patrik, Collaboration, WASA-at-COSY, Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berlowski, M., Bondar, A., Buescher, M., Calén, Hans, Ciepal, I., Clement, H., Czerwinski, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, R., Foehl, K., Fransson, Kjell, Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, Carl-Oskar, Heijkenskjöld, Lena, Hejny, V., Huesken, N., Jarczyk, L., Johansson, Tord, Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Klos, B., Krzemien, W., Kulessa, R., Kupsc, Andrzej, Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, Pawel, Marianski, B., Morsch, H. -P, Moskal, R., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, Damian, Pysz, K., Pyszniak, Andzej, Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schatti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Stroeher, H., Szczurek, A., Trzcinski, A., Wolke, Magnus, Wronska, A., Wuestner, R., Yamamoto, A., Zabierowski, J., Zielinski, M. J., Zlomanczuk, Jozef, Zupranski, R., Zurek, M., and Wirzba, A.
Abstract: We report on the search for the rare decay eta -> pi(0)e(+)e(-) which is of interest to study C violation in the electromagnetic interaction which would indicate contributions from physics beyond the Standard Model, since the allowed decay via a two-photon intermediate state is strongly suppressed. The experiment has been performed using the WASA-at-COSY installation, located at the COSY accelerator of the Forschungszentrum Julich, Germany. In total 3 x 10(7) events of the reaction pd -> He-3 eta have been recorded at an excess energy of Q = 59.8MeV. Based on this data set the C parity violating decay eta -> pi(0)gamma* -> pi(0)e(+)e(-) via a single-photon intermediate state has been searched for, resulting in new upper limits of Gamma(eta -> pi(0)e(+) e(-))/Gamma(eta -> pi(+) pi(-) pi(0)) < 3.28 x 10(-5) and Gamma(eta -> pi(0)e(+) e(-))/Gamma(eta -> all)< 7.5 x 10(-6) (CL=90%), respectively.
Published: 2018
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23. Search for $C$ violation in the decay $\eta\rightarrow\pi^0+e^++e^-$ with WASA-at-COSY

Author: Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berłowski, M., Bondar, A., Büscher, M., Calén, H., Ciepał, I., Clement, H., Czerwiński, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, C. -O., Hanhart, C., Heijkenskjöld, L., Hejny, V., Hüsken, N., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Kłos, B., Krzemień, W., Kulessa, P., Kupść, A., Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Mariański, B., Morsch, H. -P., Moskal, P., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, D., Pysz, K., Pyszniak, A., Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schätti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Trzciński, A., Wolke, M., Wrońska, A., Wüstner, P., Yamamoto, A., Zabierowski, J., Zieliński, M. J., Złomańczuk, J., Żuprański, P., Żurek, M., Wirzba, A., Adlarson, P., Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berłowski, M., Bondar, A., Büscher, M., Calén, H., Ciepał, I., Clement, H., Czerwiński, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, P., Föhl, K., Fransson, K., Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, C. -O., Hanhart, C., Heijkenskjöld, L., Hejny, V., Hüsken, N., Jarczyk, L., Johansson, T., Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Kłos, B., Krzemień, W., Kulessa, P., Kupść, A., Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, P., Mariański, B., Morsch, H. -P., Moskal, P., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, D., Pysz, K., Pyszniak, A., Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schätti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Ströher, H., Szczurek, A., Trzciński, A., Wolke, M., Wrońska, A., Wüstner, P., Yamamoto, A., Zabierowski, J., Zieliński, M. J., Złomańczuk, J., Żuprański, P., Żurek, M., and Wirzba, A.
Abstract: We report on the investigation of the rare decay $\eta\rightarrow\pi^0+\text{e}^++\text{e}^-$ which is of interest to study both $C$ violation in the electromagnetic interaction and to search for contributions from physics beyond the Standard Model, since the allowed decay via a two-photon intermediate state is strongly suppressed. The experiment has been performed using the WASA-at-COSY installation, located at the COSY accelerator of the Forschungszentrum J\"ulich, Germany. In total $3\times10^7$ events of the reaction $\text{p}+\text{d}\rightarrow{^3\text{He}}+\eta$ have been recorded at an excess energy of $Q = 59.8\,\textrm{MeV}$. Based on this data set the $C$ parity violating decay $\eta\rightarrow\pi^0+\gamma^*\rightarrow\pi^0+\textrm{e}^++\textrm{e}^-$ via a single-photon intermediate state has been searched for, resulting in new upper limits of $\Gamma\left(\eta\rightarrow\pi^0+\textrm{e}^++\textrm{e}^-\right)/ \Gamma\left(\eta\rightarrow\pi^++\pi^-+\pi^0\right) < 3.28\times10^{-5}$ and $\Gamma\left(\eta\rightarrow\pi^0+\textrm{e}^++\textrm{e}^-\right)/ \Gamma\left(\eta\rightarrow\textrm{all}\right) < 7.5\times10^{-6}\ (\textrm{CL} = 90\,\%)$, respectively., Comment: 7 pages, 8 figures, submitted to PLB
Published: 2018
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24. Search for C violation in the decay eta -> pi(0)e(+)e(-) with WASA-at-COSY

Author: Adlarson, Patrik, Collaboration, WASA-at-COSY, Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berlowski, M., Bondar, A., Buescher, M., Calén, Hans, Ciepal, I., Clement, H., Czerwinski, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, R., Foehl, K., Fransson, Kjell, Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, Carl-Oskar, Heijkenskjöld, Lena, Hejny, V., Huesken, N., Jarczyk, L., Johansson, Tord, Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Klos, B., Krzemien, W., Kulessa, R., Kupsc, Andrzej, Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, Pawel, Marianski, B., Morsch, H. -P, Moskal, R., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, Damian, Pysz, K., Pyszniak, Andzej, Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schatti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Stroeher, H., Szczurek, A., Trzcinski, A., Wolke, Magnus, Wronska, A., Wuestner, R., Yamamoto, A., Zabierowski, J., Zielinski, M. J., Zlomanczuk, Jozef, Zupranski, R., Zurek, M., Wirzba, A., Adlarson, Patrik, Collaboration, WASA-at-COSY, Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berlowski, M., Bondar, A., Buescher, M., Calén, Hans, Ciepal, I., Clement, H., Czerwinski, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, R., Foehl, K., Fransson, Kjell, Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, Carl-Oskar, Heijkenskjöld, Lena, Hejny, V., Huesken, N., Jarczyk, L., Johansson, Tord, Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Klos, B., Krzemien, W., Kulessa, R., Kupsc, Andrzej, Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, Pawel, Marianski, B., Morsch, H. -P, Moskal, R., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, Damian, Pysz, K., Pyszniak, Andzej, Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schatti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Stroeher, H., Szczurek, A., Trzcinski, A., Wolke, Magnus, Wronska, A., Wuestner, R., Yamamoto, A., Zabierowski, J., Zielinski, M. J., Zlomanczuk, Jozef, Zupranski, R., Zurek, M., and Wirzba, A.
Abstract: We report on the search for the rare decay eta -> pi(0)e(+)e(-) which is of interest to study C violation in the electromagnetic interaction which would indicate contributions from physics beyond the Standard Model, since the allowed decay via a two-photon intermediate state is strongly suppressed. The experiment has been performed using the WASA-at-COSY installation, located at the COSY accelerator of the Forschungszentrum Julich, Germany. In total 3 x 10(7) events of the reaction pd -> He-3 eta have been recorded at an excess energy of Q = 59.8MeV. Based on this data set the C parity violating decay eta -> pi(0)gamma* -> pi(0)e(+)e(-) via a single-photon intermediate state has been searched for, resulting in new upper limits of Gamma(eta -> pi(0)e(+) e(-))/Gamma(eta -> pi(+) pi(-) pi(0)) < 3.28 x 10(-5) and Gamma(eta -> pi(0)e(+) e(-))/Gamma(eta -> all)< 7.5 x 10(-6) (CL=90%), respectively.
Published: 2018
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25. Feasibility Study for an EDM Storage Ring

Author: Abusaif, F., Aggarwal, A., Aksentev, A., Alberdi-Esuain, B., Barion, L., Basile, S., Berz, M., Beyß, M., Böhme, C., Böker, J., Borburgh, J., Carli, C., Ciepał, I., Ciullo, G., Contalbrigo, M., De Conto, J. -M., Dymov, S., Engels, R., Felden, O., Gagoshidze, M., Gaisser, M., Gebel, R., Giese, N., Grigoryev, K., Grzonka, D., Hanraths, T., Hanhart, C., Heberling, D., Hejny, V., Hetzel, J., Hölscher, D., Javakhishvili, O., Kacharava, A., Karanth, S., Käseberg, C., Kamerdzhiev, V., Keshelashvili, I., Koop, I., Kulikov, A., Laihem, K., Lamont, M., Lehrach, A., Lenisa, P., Lomidze, N., Lorentz, B., Macharashvili, G., Magiera, A., Maier, R., Makino, K., Martin, S., Mchedlishvili, D., Meißner, U. -G., Metreveli, Z., Michaud, J., Müller, F., Nass, A., Natour, G., Nikolaev, N., Nogga, A., Pesce, A., Poncza, V., Prasuhn, D., Pretz, J., Rathmann, F., Ritman, J., Rosenthal, M., Saleev, A., Schott, M., Sefzick, T., Senichev, Y., Shergelashvili, D., Shmakova, V., Siddique, S., Silenko, A., Simon, M., Slim, J., Soltner, H., Stahl, A., Stassen, R., Stephenson, E., Straatmann, H., Ströher, H., Tabidze, M., Tagliente, G., Tahar, M., Talman, R., Uzikov, Yu., Valdau, Yu., Valetov, E., Wagner, T., Weidemann, C., Wilkin, C., Wirzba, A., Wrońska, A., Wüstner, P., Abusaif, F., Aggarwal, A., Aksentev, A., Alberdi-Esuain, B., Barion, L., Basile, S., Berz, M., Beyß, M., Böhme, C., Böker, J., Borburgh, J., Carli, C., Ciepał, I., Ciullo, G., Contalbrigo, M., De Conto, J. -M., Dymov, S., Engels, R., Felden, O., Gagoshidze, M., Gaisser, M., Gebel, R., Giese, N., Grigoryev, K., Grzonka, D., Hanraths, T., Hanhart, C., Heberling, D., Hejny, V., Hetzel, J., Hölscher, D., Javakhishvili, O., Kacharava, A., Karanth, S., Käseberg, C., Kamerdzhiev, V., Keshelashvili, I., Koop, I., Kulikov, A., Laihem, K., Lamont, M., Lehrach, A., Lenisa, P., Lomidze, N., Lorentz, B., Macharashvili, G., Magiera, A., Maier, R., Makino, K., Martin, S., Mchedlishvili, D., Meißner, U. -G., Metreveli, Z., Michaud, J., Müller, F., Nass, A., Natour, G., Nikolaev, N., Nogga, A., Pesce, A., Poncza, V., Prasuhn, D., Pretz, J., Rathmann, F., Ritman, J., Rosenthal, M., Saleev, A., Schott, M., Sefzick, T., Senichev, Y., Shergelashvili, D., Shmakova, V., Siddique, S., Silenko, A., Simon, M., Slim, J., Soltner, H., Stahl, A., Stassen, R., Stephenson, E., Straatmann, H., Ströher, H., Tabidze, M., Tagliente, G., Tahar, M., Talman, R., Uzikov, Yu., Valdau, Yu., Valetov, E., Wagner, T., Weidemann, C., Wilkin, C., Wirzba, A., Wrońska, A., and Wüstner, P.
Abstract: This project exploits charged particles confined as a storage ring beam (proton, deuteron, possibly $^3$He) to search for an intrinsic electric dipole moment (EDM, $\vec d$) aligned along the particle spin axis. Statistical sensitivities can approach $10^{-29}$~e$\cdot$cm. The challenge will be to reduce systematic errors to similar levels. The ring will be adjusted to preserve the spin polarization, initially parallel to the particle velocity, for times in excess of 15 minutes. Large radial electric fields, acting through the EDM, will rotate the polarization ($\vec d \times\vec E$). The slow rise in the vertical polarization component, detected through scattering from a target, signals the EDM. The project strategy is outlined. It foresees a step-wise plan, starting with ongoing COSY activities that demonstrate technical feasibility. Achievements to date include reduced polarization measurement errors, long horizontal-plane polarization lifetimes, and control of the polarization direction through feedback from the scattering measurements. The project continues with a proof-of-capability measurement (precursor experiment; first direct deuteron EDM measurement), an intermediate prototype ring (proof-of-principle; demonstrator for key technologies), and finally the high precision electric-field storage ring.
Published: 2018

26. The branching ratio omega -> pi(+) pi(-) revisited

Author: Hanhart, C., Holz, S., Kubis, B., Kupść, Andrzej, Wirzba, A., Xiao, C. W., Hanhart, C., Holz, S., Kubis, B., Kupść, Andrzej, Wirzba, A., and Xiao, C. W.
Abstract: We analyze themost recent data for the pion vector form factor in the timelike region, employing a modelindependent approach based on dispersion theory. We confirm earlier observations about the inconsistency of different modern high-precision data sets. Excluding the BaBar data, we find an updated value for the isospin-violating branching ratio B(omega -> pi(+) pi(-)) = (1.46 +/- 0.08) x 10(-2). As a side result, we also extract an improved value for the pion vector or charge radius, root < r(V)(2)> = 0.6603(5)(4) fm, where the first uncertainty is statistical as derived from the fit, while the second estimates the possible size of nonuniversal radiative corrections. In addition, we demonstrate that modern high-quality data for the decay. eta'-> pi(+) pi(-) will allow for an even improved determination of the transition strength omega -> pi(+) pi(-)., Correction in: European Physical Journal C, vol. 78, issue 6, article Number: 450.DOI: 10.1140/epjc/s10052-018-5941-7
Published: 2017
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27. The branching ratio omega -> pi(+) pi(-) revisited

Author: Hanhart, C., Holz, S., Kubis, B., Kupść, Andrzej, Wirzba, A., Xiao, C. W., Hanhart, C., Holz, S., Kubis, B., Kupść, Andrzej, Wirzba, A., and Xiao, C. W.
Abstract: We analyze themost recent data for the pion vector form factor in the timelike region, employing a modelindependent approach based on dispersion theory. We confirm earlier observations about the inconsistency of different modern high-precision data sets. Excluding the BaBar data, we find an updated value for the isospin-violating branching ratio B(omega -> pi(+) pi(-)) = (1.46 +/- 0.08) x 10(-2). As a side result, we also extract an improved value for the pion vector or charge radius, root < r(V)(2)> = 0.6603(5)(4) fm, where the first uncertainty is statistical as derived from the fit, while the second estimates the possible size of nonuniversal radiative corrections. In addition, we demonstrate that modern high-quality data for the decay. eta'-> pi(+) pi(-) will allow for an even improved determination of the transition strength omega -> pi(+) pi(-)., Correction in: European Physical Journal C, vol. 78, issue 6, article Number: 450.DOI: 10.1140/epjc/s10052-018-5941-7
Published: 2017
Full Text: View/download PDF

28. The branching ratio omega -> pi(+) pi(-) revisited

Author: Hanhart, C., Holz, S., Kubis, B., Kupść, Andrzej, Wirzba, A., Xiao, C. W., Hanhart, C., Holz, S., Kubis, B., Kupść, Andrzej, Wirzba, A., and Xiao, C. W.
Abstract: We analyze themost recent data for the pion vector form factor in the timelike region, employing a modelindependent approach based on dispersion theory. We confirm earlier observations about the inconsistency of different modern high-precision data sets. Excluding the BaBar data, we find an updated value for the isospin-violating branching ratio B(omega -> pi(+) pi(-)) = (1.46 +/- 0.08) x 10(-2). As a side result, we also extract an improved value for the pion vector or charge radius, root < r(V)(2)> = 0.6603(5)(4) fm, where the first uncertainty is statistical as derived from the fit, while the second estimates the possible size of nonuniversal radiative corrections. In addition, we demonstrate that modern high-quality data for the decay. eta'-> pi(+) pi(-) will allow for an even improved determination of the transition strength omega -> pi(+) pi(-)., Correction in: European Physical Journal C, vol. 78, issue 6, article Number: 450.DOI: 10.1140/epjc/s10052-018-5941-7
Published: 2017
Full Text: View/download PDF

29. HistoriCity: essays on the history of southern Alberta

Author: Shaw, Amy, Wirzba, Johannah, Boehmner, Craig, Chiem, Allan, Bowie, Kayley, Entz, Naomi, McCallum, Riane, Ratcliffe, Caitlin, Pugh, Robyn, Hunter, Scott, Forster, Shelby, Shaw, Amy, Wirzba, Johannah, Boehmner, Craig, Chiem, Allan, Bowie, Kayley, Entz, Naomi, McCallum, Riane, Ratcliffe, Caitlin, Pugh, Robyn, Hunter, Scott, and Forster, Shelby
Published: 2017

30. HistoriCity: essays on the history of southern Alberta

Author: Shaw, Amy, Wirzba, Johannah, Boehmner, Craig, Chiem, Allan, Bowie, Kayley, Entz, Naomi, McCallum, Riane, Ratcliffe, Caitlin, Pugh, Robyn, Hunter, Scott, Forster, Shelby, Shaw, Amy, Wirzba, Johannah, Boehmner, Craig, Chiem, Allan, Bowie, Kayley, Entz, Naomi, McCallum, Riane, Ratcliffe, Caitlin, Pugh, Robyn, Hunter, Scott, and Forster, Shelby
Published: 2017

31. HistoriCity: essays on the history of southern Alberta

Author: Shaw, Amy, Wirzba, Johannah, Boehmner, Craig, Chiem, Allan, Bowie, Kayley, Entz, Naomi, McCallum, Riane, Ratcliffe, Caitlin, Pugh, Robyn, Hunter, Scott, Forster, Shelby, Shaw, Amy, Wirzba, Johannah, Boehmner, Craig, Chiem, Allan, Bowie, Kayley, Entz, Naomi, McCallum, Riane, Ratcliffe, Caitlin, Pugh, Robyn, Hunter, Scott, and Forster, Shelby
Published: 2017

32. HistoriCity: essays on the history of southern Alberta

Author: Shaw, Amy, Wirzba, Johannah, Boehmner, Craig, Chiem, Allan, Bowie, Kayley, Entz, Naomi, McCallum, Riane, Ratcliffe, Caitlin, Pugh, Robyn, Hunter, Scott, Forster, Shelby, Shaw, Amy, Wirzba, Johannah, Boehmner, Craig, Chiem, Allan, Bowie, Kayley, Entz, Naomi, McCallum, Riane, Ratcliffe, Caitlin, Pugh, Robyn, Hunter, Scott, and Forster, Shelby
Published: 2017

33. The branching ratio omega -> pi(+) pi(-) revisited

Author: Hanhart, C., Holz, S., Kubis, B., Kupść, Andrzej, Wirzba, A., Xiao, C. W., Hanhart, C., Holz, S., Kubis, B., Kupść, Andrzej, Wirzba, A., and Xiao, C. W.
Abstract: We analyze themost recent data for the pion vector form factor in the timelike region, employing a modelindependent approach based on dispersion theory. We confirm earlier observations about the inconsistency of different modern high-precision data sets. Excluding the BaBar data, we find an updated value for the isospin-violating branching ratio B(omega -> pi(+) pi(-)) = (1.46 +/- 0.08) x 10(-2). As a side result, we also extract an improved value for the pion vector or charge radius, root < r(V)(2)> = 0.6603(5)(4) fm, where the first uncertainty is statistical as derived from the fit, while the second estimates the possible size of nonuniversal radiative corrections. In addition, we demonstrate that modern high-quality data for the decay. eta'-> pi(+) pi(-) will allow for an even improved determination of the transition strength omega -> pi(+) pi(-)., Correction in: European Physical Journal C, vol. 78, issue 6, article Number: 450.DOI: 10.1140/epjc/s10052-018-5941-7
Published: 2017
Full Text: View/download PDF

34. HistoriCity: essays on the history of southern Alberta

Author: Shaw, Amy, Wirzba, Johannah, Boehmner, Craig, Chiem, Allan, Bowie, Kayley, Entz, Naomi, McCallum, Riane, Ratcliffe, Caitlin, Pugh, Robyn, Hunter, Scott, Forster, Shelby, Shaw, Amy, Wirzba, Johannah, Boehmner, Craig, Chiem, Allan, Bowie, Kayley, Entz, Naomi, McCallum, Riane, Ratcliffe, Caitlin, Pugh, Robyn, Hunter, Scott, and Forster, Shelby
Published: 2017

35. The branching ratio omega -> pi(+) pi(-) revisited

Author: Hanhart, C., Holz, S., Kubis, B., Kupść, Andrzej, Wirzba, A., Xiao, C. W., Hanhart, C., Holz, S., Kubis, B., Kupść, Andrzej, Wirzba, A., and Xiao, C. W.
Abstract: We analyze themost recent data for the pion vector form factor in the timelike region, employing a modelindependent approach based on dispersion theory. We confirm earlier observations about the inconsistency of different modern high-precision data sets. Excluding the BaBar data, we find an updated value for the isospin-violating branching ratio B(omega -> pi(+) pi(-)) = (1.46 +/- 0.08) x 10(-2). As a side result, we also extract an improved value for the pion vector or charge radius, root < r(V)(2)> = 0.6603(5)(4) fm, where the first uncertainty is statistical as derived from the fit, while the second estimates the possible size of nonuniversal radiative corrections. In addition, we demonstrate that modern high-quality data for the decay. eta'-> pi(+) pi(-) will allow for an even improved determination of the transition strength omega -> pi(+) pi(-)., Correction in: European Physical Journal C, vol. 78, issue 6, article Number: 450.DOI: 10.1140/epjc/s10052-018-5941-7
Published: 2017
Full Text: View/download PDF

36. Permanent Electric Dipole Moments of Single-, Two-, and Three-Nucleon Systems

Author: Wirzba, Andreas, Bsaisou, Jan, Nogga, Andreas, Wirzba, Andreas, Bsaisou, Jan, and Nogga, Andreas
Abstract: A nonzero electric dipole moment (EDM) of the neutron, proton, deuteron or helion, in fact, of any finite system necessarily involves the breaking of a symmetry, either by the presence of external fields (i.e. electric fields leading to the case of induced EDMs) or explicitly by the breaking of the discrete parity and time-reflection symmetries in the case of permanent EDMs. We discuss two theorems describing these phenomena and report about the cosmological motivation for an existence of CP breaking beyond what is generated by the Kobayashi-Maskawa mechanism in the Standard Model and what this might imply for the permanent electric dipole moments of the nucleon and light nuclei by estimating a window of opportunity for physics beyond what is currently known. Recent - and in the case of the deuteron even unpublished - results for the relevant matrix elements of nuclear EDM operators are presented and the relevance for disentangling underlying New Physics sources are discussed., Comment: 20 pages, chapter for the memorial book "Gerry Brown 90", final version, some typos corrected
Published: 2016
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37. Permanent Electric Dipole Moments of Single-, Two-, and Three-Nucleon Systems

Author: Wirzba, Andreas, Bsaisou, Jan, Nogga, Andreas, Wirzba, Andreas, Bsaisou, Jan, and Nogga, Andreas
Abstract: A nonzero electric dipole moment (EDM) of the neutron, proton, deuteron or helion, in fact, of any finite system necessarily involves the breaking of a symmetry, either by the presence of external fields (i.e. electric fields leading to the case of induced EDMs) or explicitly by the breaking of the discrete parity and time-reflection symmetries in the case of permanent EDMs. We discuss two theorems describing these phenomena and report about the cosmological motivation for an existence of CP breaking beyond what is generated by the Kobayashi-Maskawa mechanism in the Standard Model and what this might imply for the permanent electric dipole moments of the nucleon and light nuclei by estimating a window of opportunity for physics beyond what is currently known. Recent - and in the case of the deuteron even unpublished - results for the relevant matrix elements of nuclear EDM operators are presented and the relevance for disentangling underlying New Physics sources are discussed., Comment: 20 pages, chapter for the memorial book "Gerry Brown 90", final version, some typos corrected
Published: 2016
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38. The branching ratio $\omega \to \pi^+\pi^-$ revisited

Author: Hanhart, C., Holz, S., Kubis, B., Kupść, A., Wirzba, A., Xiao, C. W., Hanhart, C., Holz, S., Kubis, B., Kupść, A., Wirzba, A., and Xiao, C. W.
Abstract: We analyze the most recent data for the pion vector form factor in the timelike region, employing a model-independent approach based on dispersion theory. We confirm earlier observations about the inconsistency of different modern high-precision data sets. Excluding the BaBar data, we find an updated value for the isospin-violating branching ratio $\mathcal{B}(\omega \to \pi^+\pi^-) = (1.46\pm 0.08) \times 10^{-2}$. As a side result, we also extract an improved value for the pion vector or charge radius, $\sqrt{\langle r_V^2\rangle} = 0.6603(5)(4)\text{fm}$, where the first uncertainty is statistical as derived from the fit, while the second estimates the possible size of nonuniversal radiative corrections. In addition, we demonstrate that modern high-quality data for the decay $\eta' \to \pi^+\pi^-\gamma$ will allow for an even improved determination of the transition strength $\omega\to\pi^+\pi^-$., Comment: 11+2 pages, 7+1 figures; v3: erratum appended that rectifies erroneous treatment of the BaBar data
Published: 2016
Full Text: View/download PDF

39. Permanent Electric Dipole Moments of Single-, Two-, and Three-Nucleon Systems

Author: Wirzba, Andreas, Bsaisou, Jan, Nogga, Andreas, Wirzba, Andreas, Bsaisou, Jan, and Nogga, Andreas
Abstract: A nonzero electric dipole moment (EDM) of the neutron, proton, deuteron or helion, in fact, of any finite system necessarily involves the breaking of a symmetry, either by the presence of external fields (i.e. electric fields leading to the case of induced EDMs) or explicitly by the breaking of the discrete parity and time-reflection symmetries in the case of permanent EDMs. We discuss two theorems describing these phenomena and report about the cosmological motivation for an existence of CP breaking beyond what is generated by the Kobayashi-Maskawa mechanism in the Standard Model and what this might imply for the permanent electric dipole moments of the nucleon and light nuclei by estimating a window of opportunity for physics beyond what is currently known. Recent - and in the case of the deuteron even unpublished - results for the relevant matrix elements of nuclear EDM operators are presented and the relevance for disentangling underlying New Physics sources are discussed., Comment: 20 pages, chapter for the memorial book "Gerry Brown 90", final version, some typos corrected
Published: 2016
Full Text: View/download PDF

40. The branching ratio $\omega \to \pi^+\pi^-$ revisited

Author: Hanhart, C., Holz, S., Kubis, B., Kupść, A., Wirzba, A., Xiao, C. W., Hanhart, C., Holz, S., Kubis, B., Kupść, A., Wirzba, A., and Xiao, C. W.
Abstract: We analyze the most recent data for the pion vector form factor in the timelike region, employing a model-independent approach based on dispersion theory. We confirm earlier observations about the inconsistency of different modern high-precision data sets. Excluding the BaBar data, we find an updated value for the isospin-violating branching ratio $\mathcal{B}(\omega \to \pi^+\pi^-) = (1.46\pm 0.08) \times 10^{-2}$. As a side result, we also extract an improved value for the pion vector or charge radius, $\sqrt{\langle r_V^2\rangle} = 0.6603(5)(4)\text{fm}$, where the first uncertainty is statistical as derived from the fit, while the second estimates the possible size of nonuniversal radiative corrections. In addition, we demonstrate that modern high-quality data for the decay $\eta' \to \pi^+\pi^-\gamma$ will allow for an even improved determination of the transition strength $\omega\to\pi^+\pi^-$., Comment: 11+2 pages, 7+1 figures; v3: erratum appended that rectifies erroneous treatment of the BaBar data
Published: 2016
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41. New Method for a Continuous Determination of the Spin Tune in Storage Rings and Implications for Precision Experiments

Author: Eversmann, D., Hejny, V., Hinder, F., Kacharava, A., Pretz, J., Rathmann, F., Rosenthal, M., Trinkel, F., Andrianov, S., Augustyniak, W., Bagdasarian, Z., Bai, M., Bernreuther, W., Bertelli, S., Berz, M., Bsaisou, J., Chekmenev, S., Chiladze, D., Ciullo, G., Contalbrigo, M., de Vries, J., Dymov, S., Engels, R., Esser, F. M., Felden, O., Gaisser, M., Gebel, R., Glueckler, H., Goldenbaum, F., Grigoryev, K., Grzonka, D., Guidoboni, G., Hanhart, C., Heberling, D., Hempelmann, N., Hetzel, J., Hipple, R., Hoelscher, D., Ivanov, A., Kamerdzhiev, V., Kamys, B., Keshelashvili, I., Khoukaz, A., Koop, I., Krause, H-J, Krewald, S., Kulikov, A., Lehrach, A., Lenisa, P., Lomidze, N., Lorentz, B., Maanen, P., Macharashvili, G., Magiera, A., Maier, R., Makino, K., Marianski, B., Mchedlishvili, D., Meiner, Ulf-G., Mey, S., Nass, A., Natour, G., Nikolaev, N., Nioradze, M., Nogga, A., Nowakowski, K., Pesce, A., Prasuhn, D., Ritman, J., Rudy, Z., Saleev, A., Semertzidis, Y., Senichev, Y., Shmakova, V., Silenko, A., Slim, J., Soltner, H., Stahl, A., Stassen, R., Statera, M., Stephenson, E., Stockhorst, H., Straatmann, H., Stroeher, H., Tabidze, M., Talman, R., Engblom, Pia Thörngren, Trzcinski, A., Uzikov, Yu., Valdau, Yu., Valetov, E., Vassiliev, A., Weidemann, C., Wilkin, C., Wirzba, A., Wronska, A., Wuestner, P., Zakrzewska, M., Zupranski, P., Zyuzin, D., Eversmann, D., Hejny, V., Hinder, F., Kacharava, A., Pretz, J., Rathmann, F., Rosenthal, M., Trinkel, F., Andrianov, S., Augustyniak, W., Bagdasarian, Z., Bai, M., Bernreuther, W., Bertelli, S., Berz, M., Bsaisou, J., Chekmenev, S., Chiladze, D., Ciullo, G., Contalbrigo, M., de Vries, J., Dymov, S., Engels, R., Esser, F. M., Felden, O., Gaisser, M., Gebel, R., Glueckler, H., Goldenbaum, F., Grigoryev, K., Grzonka, D., Guidoboni, G., Hanhart, C., Heberling, D., Hempelmann, N., Hetzel, J., Hipple, R., Hoelscher, D., Ivanov, A., Kamerdzhiev, V., Kamys, B., Keshelashvili, I., Khoukaz, A., Koop, I., Krause, H-J, Krewald, S., Kulikov, A., Lehrach, A., Lenisa, P., Lomidze, N., Lorentz, B., Maanen, P., Macharashvili, G., Magiera, A., Maier, R., Makino, K., Marianski, B., Mchedlishvili, D., Meiner, Ulf-G., Mey, S., Nass, A., Natour, G., Nikolaev, N., Nioradze, M., Nogga, A., Nowakowski, K., Pesce, A., Prasuhn, D., Ritman, J., Rudy, Z., Saleev, A., Semertzidis, Y., Senichev, Y., Shmakova, V., Silenko, A., Slim, J., Soltner, H., Stahl, A., Stassen, R., Statera, M., Stephenson, E., Stockhorst, H., Straatmann, H., Stroeher, H., Tabidze, M., Talman, R., Engblom, Pia Thörngren, Trzcinski, A., Uzikov, Yu., Valdau, Yu., Valetov, E., Vassiliev, A., Weidemann, C., Wilkin, C., Wirzba, A., Wronska, A., Wuestner, P., Zakrzewska, M., Zupranski, P., and Zyuzin, D.
Abstract: A new method to determine the spin tune is described and tested. In an ideal planar magnetic ring, the spin tune-defined as the number of spin precessions per turn-is given by nu(s) = gamma G (gamma is the Lorentz factor, G the gyromagnetic anomaly). At 970 MeV/c, the deuteron spins coherently process at a frequency of approximate to 120 kHz in the Cooler Synchrotron COSY. The spin tune is deduced from the up-down asymmetry of deuteron-carbon scattering. In a time interval of 2.6 s, the spin tune was determined with a precision of the order 10(-8), and to 1 x 10(-10) for a continuous 100 s accelerator cycle. This renders the presented method a new precision tool for accelerator physics; controlling the spin motion of particles to high precision is mandatory, in particular, for the measurement of electric dipole moments of charged particles in a storage ring., QC 20140924
Published: 2015
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42. Towards an improved understanding of $\eta \to \gamma^* \gamma^*$

Author: Holz, S., Plenter, J., Xiao, C. W., Dato, T., Hanhart, C., Kubis, B., Meißner, U. -G., Wirzba, A., Holz, S., Plenter, J., Xiao, C. W., Dato, T., Hanhart, C., Kubis, B., Meißner, U. -G., and Wirzba, A.
Abstract: We argue that high-quality data on the reaction $e^+e^-\to \pi^+\pi^-\eta$ will allow one to determine the doubly-virtual form factor $\eta\to \gamma^*\gamma^*$ in a model-independent way with controlled accuracy. This is an important step towards a reliable evaluation of the hadronic light-by-light scattering contribution to the anomalous magnetic moment of the muon. When analyzing the existing data for $e^+e^-\to\pi^+\pi^-\eta$ for total energies squared $k^2>1\text{GeV}^2$, we demonstrate that the effect of the $a_2$ meson provides a natural breaking mechanism for the commonly employed factorization ansatz in the doubly-virtual form factor $F_{\eta\gamma^*\gamma^*}(q^2,k^2)$. However, better data are needed to draw firm conclusions., Comment: 15 pages, 10 figures; v2: major revision - author list extended, treatment of the left-hand cut corrected, discussion and references updated; v3: version published in EPJC
Published: 2015
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43. Towards an improved understanding of $\eta \to \gamma^* \gamma^*$

Author: Holz, S., Plenter, J., Xiao, C. W., Dato, T., Hanhart, C., Kubis, B., Meißner, U. -G., Wirzba, A., Holz, S., Plenter, J., Xiao, C. W., Dato, T., Hanhart, C., Kubis, B., Meißner, U. -G., and Wirzba, A.
Abstract: We argue that high-quality data on the reaction $e^+e^-\to \pi^+\pi^-\eta$ will allow one to determine the doubly-virtual form factor $\eta\to \gamma^*\gamma^*$ in a model-independent way with controlled accuracy. This is an important step towards a reliable evaluation of the hadronic light-by-light scattering contribution to the anomalous magnetic moment of the muon. When analyzing the existing data for $e^+e^-\to\pi^+\pi^-\eta$ for total energies squared $k^2>1\text{GeV}^2$, we demonstrate that the effect of the $a_2$ meson provides a natural breaking mechanism for the commonly employed factorization ansatz in the doubly-virtual form factor $F_{\eta\gamma^*\gamma^*}(q^2,k^2)$. However, better data are needed to draw firm conclusions., Comment: 15 pages, 10 figures; v2: major revision - author list extended, treatment of the left-hand cut corrected, discussion and references updated; v3: version published in EPJC
Published: 2015
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44. MesonNet 2014 International Workshop. Mini-proceedings

Author: Adlarson, P., Bashkanov, M., Bijnens, J., Balkeståhl, L. Caldeira, Cao, B., Colangelo, G., Curciarello, F., De Leo, V., Demmich, K., Eichmann, G., Eidelman, S., Fang, S., Redmer, C. F., Fritzsch, C., Gajos, A., Giovannella, S., Gonzàlez-Solís, S., Goudzovski, E., Heijkenskjöld, L., Hoferichter, M., Husek, T., Hüsken, N., Andersson, W. I., Kadavý, T., Kamińska, D., Kampf, K., Knecht, M., Kolesár, M., Krusche, B., Kubis, B., Kupsc, A., Mascolo, M., Masjuan, P., Novotný, J., Procura, M., Ramstein, B., Sanchez-Puertas, P., Sarantsev, A., Schott, D., Somov, A., Spieker, K., Stoffer, P., Tulin, S., Wilson, A., Wirzba, A., Żurek, M., Adlarson, P., Bashkanov, M., Bijnens, J., Balkeståhl, L. Caldeira, Cao, B., Colangelo, G., Curciarello, F., De Leo, V., Demmich, K., Eichmann, G., Eidelman, S., Fang, S., Redmer, C. F., Fritzsch, C., Gajos, A., Giovannella, S., Gonzàlez-Solís, S., Goudzovski, E., Heijkenskjöld, L., Hoferichter, M., Husek, T., Hüsken, N., Andersson, W. I., Kadavý, T., Kamińska, D., Kampf, K., Knecht, M., Kolesár, M., Krusche, B., Kubis, B., Kupsc, A., Mascolo, M., Masjuan, P., Novotný, J., Procura, M., Ramstein, B., Sanchez-Puertas, P., Sarantsev, A., Schott, D., Somov, A., Spieker, K., Stoffer, P., Tulin, S., Wilson, A., Wirzba, A., and Żurek, M.
Abstract: The MesonNet International Workshop was held in the Laboratori Nazionali di Frascati from September the 29th to October the 1st, 2014, being the concluding meeting of the MesonNet research network within EU HadronPhysics3 project. MesonNet is a research network focused on light meson physics gathering experimentalist and theoreticians from Europe and abroad. An overview of the research projects related to the scope of the network is presented in these mini-proceedings., Comment: 93 pages, 12 figures, MesonNet 2014 International Workshop, 29/9 - 1/10 Frascati LNF INFN
Published: 2014

45. Nuclear Electric Dipole Moments in Chiral Effective Field Theory

Author: Bsaisou, J., de Vries, J., Hanhart, C., Liebig, S., Meißner, Ulf-G., Minossi, D., Nogga, A., Wirzba, A., Bsaisou, J., de Vries, J., Hanhart, C., Liebig, S., Meißner, Ulf-G., Minossi, D., Nogga, A., and Wirzba, A.
Abstract: We provide a consistent and complete calculation of the electric dipole moments of the deuteron, helion, and triton in the framework of chiral effective field theory. The CP-conserving and CP-violating interactions are treated on equal footing and we consider CP-violating one-, two-, and three-nucleon operators up to next-to-leading-order in the chiral power counting. In particular, we calculate for the first time EDM contributions induced by the CP-violating three-pion operator. We find that effects of CP-violating nucleon-nucleon contact interactions are larger than those found in previous studies based on phenomenological models for the CP-conserving nucleon-nucleon interactions. Our results which apply to any model of CP violation in the hadronic sector can be used to test various scenarios of CP violation. As examples, we study the implications of our results on the QCD $\theta$-term and the minimal left-right symmetric model., Comment: 23 pages, 3 figures, 4 tables, corresponds to the published version (including erratum - see Appendix C)
Published: 2014
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46. P- and T-Violating Lagrangians in Chiral Effective Field Theory and Nuclear Electric Dipole Moments

Author: Bsaisou, J., Meißner, Ulf-G., Nogga, A., Wirzba, A., Bsaisou, J., Meißner, Ulf-G., Nogga, A., and Wirzba, A.
Abstract: A scheme to derive hadronic interactions induced by effective multi-quark terms is presented within the framework of chiral effective field theory. It is employed to work out the list of parity- and time-reversal-symmetry-violating hadronic interactions that are relevant for the computation of nuclear contributions to the electric dipole moments of the hydrogen-2, helium-3 and hydrogen-3 nuclei. We also derive the scattering and Faddeev equations required to compute electromagnetic form factors in general and electric dipole moments in particular., Comment: 69 pages, 1 figure, revised version, accepted for publication in Annals of Physics
Published: 2014
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47. Electric dipole moments of the nucleon and light nuclei

Author: Wirzba, Andreas and Wirzba, Andreas
Abstract: The electric dipole moments of the nucleon and light ions are discussed and strategies for disentangling the underlying sources of CP violation beyond the Kobayashi-Maskawa quark-mixing mechanism of the Standard Model are indicated. Contribution to "45 years of nuclear theory at Stony Brook: a tribute to Gerald E. Brown"., Comment: 14 pages, 2 figures, contribution to "45 years of nuclear theory at Stony Brook: a tribute to Gerald E. Brown"
Published: 2014
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48. Unraveling models of CP violation through electric dipole moments of light nuclei

Author: Dekens, W., de Vries, J., Bsaisou, J., Bernreuther, W., Hanhart, C., Meißner, Ulf-G., Nogga, A., Wirzba, A., Dekens, W., de Vries, J., Bsaisou, J., Bernreuther, W., Hanhart, C., Meißner, Ulf-G., Nogga, A., and Wirzba, A.
Abstract: We show that the proposed measurements of the electric dipole moments of light nuclei in storage rings would put strong constraints on models of flavor-diagonal CP violation. Our analysis is exemplified by a comparison of the Standard Model including the QCD theta term, the minimal left-right symmetric model, a specific version of the so-called aligned two-Higgs doublet model, and briefly the minimal supersymmetric extension of the Standard Model. By using effective field theory techniques we demonstrate to what extend measurements of the electric dipole moments of the nucleons, the deuteron, and helion could discriminate between these scenarios. We discuss how measurements of electric dipole moments of other systems relate to the light-nuclear measurements., Comment: Published version
Published: 2014
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49. Unraveling models of CP violation through electric dipole moments of light nuclei

Author: Dekens, W., de Vries, J., Bsaisou, J., Bernreuther, W., Hanhart, C., Meißner, Ulf-G., Nogga, A., Wirzba, A., Dekens, W., de Vries, J., Bsaisou, J., Bernreuther, W., Hanhart, C., Meißner, Ulf-G., Nogga, A., and Wirzba, A.
Abstract: We show that the proposed measurements of the electric dipole moments of light nuclei in storage rings would put strong constraints on models of flavor-diagonal CP violation. Our analysis is exemplified by a comparison of the Standard Model including the QCD theta term, the minimal left-right symmetric model, a specific version of the so-called aligned two-Higgs doublet model, and briefly the minimal supersymmetric extension of the Standard Model. By using effective field theory techniques we demonstrate to what extend measurements of the electric dipole moments of the nucleons, the deuteron, and helion could discriminate between these scenarios. We discuss how measurements of electric dipole moments of other systems relate to the light-nuclear measurements., Comment: Published version
Published: 2014
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50. MesonNet 2014 International Workshop. Mini-proceedings

Author: Adlarson, P., Bashkanov, M., Bijnens, J., Balkeståhl, L. Caldeira, Cao, B., Colangelo, G., Curciarello, F., De Leo, V., Demmich, K., Eichmann, G., Eidelman, S., Fang, S., Redmer, C. F., Fritzsch, C., Gajos, A., Giovannella, S., Gonzàlez-Solís, S., Goudzovski, E., Heijkenskjöld, L., Hoferichter, M., Husek, T., Hüsken, N., Andersson, W. I., Kadavý, T., Kamińska, D., Kampf, K., Knecht, M., Kolesár, M., Krusche, B., Kubis, B., Kupsc, A., Mascolo, M., Masjuan, P., Novotný, J., Procura, M., Ramstein, B., Sanchez-Puertas, P., Sarantsev, A., Schott, D., Somov, A., Spieker, K., Stoffer, P., Tulin, S., Wilson, A., Wirzba, A., Żurek, M., Adlarson, P., Bashkanov, M., Bijnens, J., Balkeståhl, L. Caldeira, Cao, B., Colangelo, G., Curciarello, F., De Leo, V., Demmich, K., Eichmann, G., Eidelman, S., Fang, S., Redmer, C. F., Fritzsch, C., Gajos, A., Giovannella, S., Gonzàlez-Solís, S., Goudzovski, E., Heijkenskjöld, L., Hoferichter, M., Husek, T., Hüsken, N., Andersson, W. I., Kadavý, T., Kamińska, D., Kampf, K., Knecht, M., Kolesár, M., Krusche, B., Kubis, B., Kupsc, A., Mascolo, M., Masjuan, P., Novotný, J., Procura, M., Ramstein, B., Sanchez-Puertas, P., Sarantsev, A., Schott, D., Somov, A., Spieker, K., Stoffer, P., Tulin, S., Wilson, A., Wirzba, A., and Żurek, M.
Abstract: The MesonNet International Workshop was held in the Laboratori Nazionali di Frascati from September the 29th to October the 1st, 2014, being the concluding meeting of the MesonNet research network within EU HadronPhysics3 project. MesonNet is a research network focused on light meson physics gathering experimentalist and theoreticians from Europe and abroad. An overview of the research projects related to the scope of the network is presented in these mini-proceedings., Comment: 93 pages, 12 figures, MesonNet 2014 International Workshop, 29/9 - 1/10 Frascati LNF INFN
Published: 2014

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