Li, Y.; Li, Y. B.; Shen, C. P.; Adachi, I.; Aihara, H.; Asner, D. M.; Atmacan, H.; Aulchenko, V.; Ayad, R.; Babu, V.; Badhrees, I.; Bakich, A. M.; Behera, P.; Bilka, T.; Biswal, J.; Bobrov, A.; Bonvicini, G.; Bozek, A.; Bracko, M.; Browder, T. E.; Campajola, M.; Cao, L.; Cervenkov, D.; Chang, P.; Chen, A.; Cheon, B. G.; Chilikin, K.; Cho, H. E.; Cho, K.; Choi, S. -K.; Choi, Y.; Cinabro, D.; Cunliffe, S.; De Nardo, G.; Di Capua, F.; Di Carlo, S.; Dolezal, Z.; Dong, T. V.; Eidelman, S.; Fast, J. E.; Ferber, T.; Ferlewicz, D.; Fulsom, B. G.; Garg, R.; Gaur, V.; Gabyshev, N.; Garmash, A.; Giri, A.; Goldenzweig, P.; Golob, B.; Grube, B.; Hara, T.; Hayasaka, K.; Hayashii, H.; Hou, W. -S.; Hsu, C. -L.; Iijima, T.; Inami, K.; Inguglia, G.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Jacobs, W. W.; Jia, S.; Jin, Y.; Joo, K. K.; Kang, K. H.; Karyan, G.; Kichimi, H.; Kim, C. H.; Kim, D. Y.; Kim, S. H.; Kinoshita, K.; Kodys, P.; Korpar, S.; Kroeger, R.; Krokovny, P.; Kuhr, T.; Kulasiri, R.; Kuzmin, A.; Kwon, Y. -J.; Lalwani, K.; Lange, J. S.; Lee, I. S.; Lee, S. C.; Lewis, P.; Li, C. H.; Li, L. K.; Gioi, L. Li; Libby, J.; Lieret, K.; Liventsev, D.; MacQueen, C.; Masuda, M.; Matsuda, T.; Matvienko, D.; Merola, M.; Miyata, H.; Mizuk, R.; Mussa, R.; Nakao, M.; Nath, K. J.; Nayak, M.; Niiyama, M.; Nisar, N. K.; Nishida, S.; Nishimura, K.; Ogawa, S.; Ono, H.; Onuki, Y.; Oskin, P.; Pakhlov, P.; Pakhlova, G.; Pang, T.; Pardi, S.; Park, H.; Park, S. -H.; Patra, S.; Paul, S.; Pedlar, T. K.; Pestotnik, R.; Piilonen, L. E.; Podobnik, T.; Popov, V.; Prencipe, E.; Prim, M. T.; Roehrken, M.; Rostomyan, A.; Rout, N.; Russo, G.; Sahoo, D.; Sakai, Y.; Sandilya, S.; Santelj, L.; Savinov, V.; Schneider, O.; Schnell, G.; Schwanda, C.; Seino, Y.; Senyo, K.; Sevior, M. E.; Shiu, J. -G.; Shwartz, B.; Sokolov, A.; Solovieva, E.; Stanic, S.; Staric, M.; Stottler, Z. S.; Sumihama, M.; Sumiyoshi, T.; Sutcliffe, W.; Takizawa, M.; Tanida, K.; Tenchini, F.; Trabelsi, K.; Uchida, M.; Uglov, T.; Unno, Y.; Uno, S.; Tonder, R. van; Varner, G.; Vinokurova, A.; Wang, C. H.; Wang, M. -Z.; Wang, X. L.; Watanabe, M.; Won, E.; Yang, S. B.; Ye, H.; Yelton, J.; Yin, J. H.; Yuan, C. Z.; Zhang, Z. P.; Zhilich, V.; Zhukova, V. and Zhulanov, V.
(2021):
Search for the dark photon in B-0 -> A ' A ', A ' -> e(+)e(-), mu(+)mu(-), and pi(+)pi(-) decays at Belle.
In: Journal of High Energy Physics, No. 4, 191
Full text not available from 'Open Access LMU'.
Abstract
We present a search for the dark photon A in the B-0 -> A ' A ' decays, where A ' subsequently decays to e(+)e(-), mu(+)mu(-), and pi(+)pi(-). The search is performed by analyzing 772 x 10(6) B (B) over bar events collected by the Belle detector at the KEKB e(+)e(-) energy-asymmetric collider at the Upsilon(4S) resonance. No signal is found in the dark photon mass range 0.01 GeV/c(2) <= m(A ') <= 2.62 GeV/c(2), and we set upper limits of the branching fraction of B-0 -> A ' A ' at the 90% confidence level. The products of branching fractions, B(B-0 -> A ' A ) x B(A '-> e(+)e(-))(2) and B(B-0 -> A ' A ') x B(A '-> mu(+)mu(-))(2), have limits of the order of 10(-8) depending on the A ' mass. Furthermore, considering A ' decay rate to each pair of charged particles, the upper limits of B(B-0 -> A ' A '), we obtain the Higgs portal coupling for each assumed dark photon and dark Higgs mass. The Higgs portal couplings are of the order of 10(-2)-10(-1) at m(h ') similar or equal to m(B0) +/- 40 MeV/c(2) and 10(-1)-1 at mh ' similar or equal to m(B0) +/- 3 GeV/c(2).
Item Type: |
Journal article
|
Faculties: |
Physics |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1029-8479 |
Language: |
English |
Item ID: |
100085 |
Date Deposited: |
05. Jun 2023, 15:33 |
Last Modified: |
05. Jun 2023, 15:33 |
Actions (login required)
- View Item