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Spin decoherence and off-resonance behavior of radiofrequency-driven spin rotations in storage rings
Autor:
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.
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 rota
Externí odkaz:
http://arxiv.org/abs/2309.05080
Autor:
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.
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
Externí odkaz:
http://arxiv.org/abs/2309.06561
Publikováno v:
JHEP 03 (2024) 059
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
Externí odkaz:
http://arxiv.org/abs/2307.02533
Publikováno v:
JHEP 06 (2023) 154
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 $
Externí odkaz:
http://arxiv.org/abs/2212.07794
Autor:
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
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-
Externí odkaz:
http://arxiv.org/abs/2208.07293
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 3, Pp 1-34 (2024)
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 η → π 0 ℓ + ℓ − and η ′ → ηℓ + ℓ − . Focusing on long-distance contributi
Externí odkaz:
https://doaj.org/article/cabb2d675c0f4ba2b82cf6e3b91f230e
Autor:
N. N. Nikolaev, F. Rathmann, J. Slim, A. Andres, V. Hejny, A. Nass, A. Kacharava, P. Lenisa, J. Pretz, A. Saleev, V. Shmakova, H. Soltner, F. Abusaif, A. Aggarwal, A. Aksentev, B. Alberdi, L. Barion, I. Bekman, M. Beyß, C. Böhme, B. Breitkreutz, N. Canale, G. Ciullo, S. Dymov, N.-O. Fröhlich, R. Gebel, M. Gaisser, K. Grigoryev, D. Grzonka, J. Hetzel, O. Javakhishvili, V. Kamerdzhiev, S. Karanth, I. Keshelashvili, A. Kononov, K. Laihem, A. Lehrach, N. Lomidze, B. Lorentz, G. Macharashvili, A. Magiera, D. Mchedlishvili, A. Melnikov, F. Müller, A. Pesce, V. Poncza, D. Prasuhn, D. Shergelashvili, N. Shurkhno, S. Siddique, A. Silenko, S. Stassen, E. J. Stephenson, H. Ströher, M. Tabidze, G. Tagliente, Y. Valdau, M. Vitz, T. Wagner, A. Wirzba, A. Wrońska, P. Wüstner, M. Żurek
Publikováno v:
Physical Review Accelerators and Beams, Vol 27, Iss 11, p 111002 (2024)
High-frequency 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 rota
Externí odkaz:
https://doaj.org/article/361d9651fdf641189cc3eb0b13cf2b27
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 oscilla
Externí odkaz:
http://arxiv.org/abs/2111.08444
Autor:
Slim, J., Nikolaev, N. N., Rathmann, F., Wirzba, A., Nass, A., Hejny, V., Pretz, J., Soltner, H., Abusaif, F., Aggarwal, A., Aksentev, A., Andres, A., Barion, L., Ciullo, G., Dymov, S., Gebel, R., Gaisser, M., Grigoryev, K., Grzonka, D., Javakhishvili, O., Kacharava, A., Kamerdzhiev, V., Karanth, S., Keshelashvili, I., Lehrach, A., Lenisa, P., Lomidze, N., Lorentz, B., Magiera, A., Mchedlishvili, D., Müller, F., Pesce, A., Poncza, V., Prasuhn, D., Saleev, A., Shmakova, V., Ströher, H., Tabidze, M., Tagliente, G., Valdau, Y., Wagner, T., Weidemann, C., Wrońska, A., Żurek, M.
We investigated coherent betatron oscillations of a deuteron beam in the storage ring COSY, excited by a detuned radio-frequency Wien filter. The beam oscillations were detected by conventional beam position monitors. With the currently available app
Externí odkaz:
http://arxiv.org/abs/2101.07582
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