+pi%2B+pi-+Upsilon%289460%29%22&type=SU">Upsilon(10020) --> pi+ pi- Upsilon(9460), electron positron: energy, channel cross section: upper limit, High Energy Physics - Experiment, Upsilon(9460) --> Higgs particle photon, (muon+ muon-) [mass spectrum], tau: pair production, upper limit [channel cross section], radiative decay, energy [electron positron], hep-ph, electron positron, energy, electron positron: colliding beams, upper limit [coupling constant], muon: pair production, High Energy Physics - Phenomenology, (tau+ tau-) [mass spectrum], pair production [tau], Higgs particle: mass, colliding beams [electron positron], mass spectrum: (tau+ tau-), branching ratio, energy: asymmetry, Particle Physics - Experiment, Upsilon(9460): radiative decay, radiative decay [Upsilon(9460)], mixing angle, hadronic decay [Upsilon(10020)], BELLE, coupling constant: upper limit, Higgs particle, electron positron: annihilation, meson, KEK-B, ddc:530, pair production [muon], Higgs particle: leptonic decay, Particle Physics - Phenomenology, leptonic decay [Higgs particle], hep-ex, mass [Higgs particle], Upsilon(10020), mass spectrum: (muon+ muon-), coupling, Yukawa, High Energy Physics::Experiment, Upsilon(9460), coupling: Yukawa, experimental results
| Popis: |
Physical review letters 128(8), 081804 (2022). doi:10.1103/PhysRevLett.128.081804
We search for a light Higgs boson ($A^0$) decaying into a $\tau^+\tau^-$ or $\mu^+\mu^-$ pair in the radiative decays of $\Upsilon(1S)$. The production of $\Upsilon(1S)$ mesons is tagged by $\Upsilon(2S)\to \pi^+ \pi^- \Upsilon(1S)$ transitions, using 158 million $\Upsilon(2S)$ events accumulated with the Belle detector at the KEKB asymmetric energy electron-positron collider. No significant $A^0$ signals in the mass range from the $\tau^+\tau^-$ or $\mu^+\mu^-$ threshold to 9.2 GeV/$c^2$ are observed. We set the upper limits at 90% credibility level (C.L.) on the product branching fractions for $\Upsilon(1S)\to \gamma A^0$ and $A^0\to \tau^+\tau^-$ varying from $3.8\times10^{-6}$ to $1.5\times10^{-4}$. Our results represent an approximately twofold improvement on the current world best upper limits for the $\Upsilon(1S)\to \gamma A^0(\to \tau^+\tau^-)$ production. For $A^0\to \mu^+\mu^-$, the upper limits on the product branching fractions for $\Upsilon(1S)\to \gamma A^0$ and $A^0\to \mu^+\mu^-$ are at the same level as the world average limits, and vary from $3.1\times10^{-7}$ to $1.6\times10^{-5}$. The upper limits at 90% C.L. on the Yukawa coupling $f_{\Upsilon(1S)}$ and mixing angle ${\rm sin}\theta_{A^0}$ are also given.
Published by APS, College Park, Md. |
| Jazyk: |
English |
| DOI: |
10.15120/gsi-2022-00802 |
| DOI: |
10.1103/PhysRevLett.128.081804 |
| DOI: |
10.3204/PUBDB-2021-05645 |
| Přístupová URL adresa: |
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7da823eb82ffe59b502bf0a78bba6bce |
| Rights: |
OPEN |
| Přírůstkové číslo: |
edsair.doi.dedup.....7da823eb82ffe59b502bf0a78bba6bce |
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| Autor: |
Jia, S., Shen, C. P., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Babu, V., Behera, P., Belous, K., Bennett, J., Bessner, M., Bhardwaj, V., Bhuyan, B., Bilka, T., Bobrov, A., Bodrov, D., Bonvicini, G., Borah, J., Bračko, M., Branchini, P., Browder, T. E., Budano, A., Campajola, M., Červenkov, D., Chang, M.-C., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Cho, S.-J., Choi, S.-K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Das, S., Dash, N., De Nardo, G., De Pietro, G., Dhamija, R., Di Capua, F., Doležal, Z., Dong, T. V., Epifanov, D., Ferber, T., Ferlewicz, D., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Giri, A., Goldenzweig, P., Golob, B., Graziani, E., Guan, Y., Gudkova, K., Hadjivasiliou, C., Hara, T., Hayasaka, K., Hayashii, H., Hedges, M. T., Hou, W.-S., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jang, E.-J., Jin, Y., Joo, K. K., Kahn, J., Kaliyar, A. B., Kang, K. H., Kawasaki, T., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, K.-H., Kim, Y.-K., Kinoshita, K., Kodyš, P., Kohani, S., Konno, T., Korobov, A., Korpar, S., Kovalenko, E., Križan, P., Kroeger, R., Krokovny, P., Kumar, M., Kumar, R., Kumara, K., Kwon, Y.-J., Lam, T., Laurenza, M., Lee, S. C., Li, J., Li, L. K., Li, Y., Li, Y. B., Li Gioi, L., Libby, J., Lieret, K., Liventsev, D., Martini, A., Masuda, M., Matsuda, T., Matvienko, D., Maurya, S. K., Meier, F., Merola, M., Metzner, F., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Mussa, R., Nakao, M., Narwal, D., Natkaniec, Z., Natochii, A., Nayak, L., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, K., Ogawa, S., Ono, H., Oskin, P., Pakhlov, P., Pakhlova, G., Pang, T., Pardi, S., Park, S.-H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Prencipe, E., Prim, M. T., Röhrken, M., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sandilya, S., Sangal, A., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Sharma, C., Shebalin, V., Shiu, J.-G., Shwartz, B., Singh, J. B., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, K., Uno, S., Urquijo, P., Vahsen, S. E., Van Tonder, R., Varner, G., Vinokurova, A., Waheed, E., Wang, D., Wang, E., Wang, M.-Z., Watanuki, S., Won, E., Yabsley, B. D., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yusa, Y., Zhai, Y., Zhang, Z. P., Zhilich, V., Zhukova, V. |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Physical review letters 128(8), 081804 (2022). doi:10.1103/PhysRevLett.128.081804 |
| DOI: |
10.15120/gsi-2022-00802 |
| Popis: |
Physical review letters 128(8), 081804 (2022). doi:10.1103/PhysRevLett.128.081804
We search for a light Higgs boson ($A^0$) decaying into a $\tau^+\tau^-$ or $\mu^+\mu^-$ pair in the radiative decays of $\Upsilon(1S)$. The production of $\Upsilon(1S)$ mesons is tagged by $\Upsilon(2S)\to \pi^+ \pi^- \Upsilon(1S)$ transitions, using 158 million $\Upsilon(2S)$ events accumulated with the Belle detector at the KEKB asymmetric energy electron-positron collider. No significant $A^0$ signals in the mass range from the $\tau^+\tau^-$ or $\mu^+\mu^-$ threshold to 9.2 GeV/$c^2$ are observed. We set the upper limits at 90% credibility level (C.L.) on the product branching fractions for $\Upsilon(1S)\to \gamma A^0$ and $A^0\to \tau^+\tau^-$ varying from $3.8\times10^{-6}$ to $1.5\times10^{-4}$. Our results represent an approximately twofold improvement on the current world best upper limits for the $\Upsilon(1S)\to \gamma A^0(\to \tau^+\tau^-)$ production. For $A^0\to \mu^+\mu^-$, the upper limits on the product branching fractions for $\Upsilon(1S)\to \gamma A^0$ and $A^0\to \mu^+\mu^-$ are at the same level as the world average limits, and vary from $3.1\times10^{-7}$ to $1.6\times10^{-5}$. The upper limits at 90% C.L. on the Yukawa coupling $f_{\Upsilon(1S)}$ and mixing angle ${\rm sin}\theta_{A^0}$ are also given.
Published by APS, College Park, Md. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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