Search for a Light Higgs Boson in Single-Photon Decays of ϒ (1S) Using ϒ (2S) →π+π- ϒ (1S) Tagging Method

S. Jia; C. P. Shen; I. Adachi; H. Aihara; S. Al Said; D. M. Asner; H. Atmacan; T. Aushev; R. Ayad; V. Babu; P. Behera; K. Belous; J. Bennett; M. Bessner; V. Bhardwaj; B. Bhuyan; T. Bilka; A. Bobrov; D. Bodrov; G. Bonvicini; J. Borah; M. Bračko; P. Branchini; T. E. Browder; A. Budano; M. Campajola; D. Červenkov; M. C. Chang; P. Chang; V. Chekelian; A. Chen; B. G. Cheon; K. Chilikin; H. E. Cho; K. Cho; S. J. Cho; S. K. Choi; Y. Choi; S. Choudhury; D. Cinabro; S. Cunliffe; S. Das; N. Dash; G. De Nardo; G. De Pietro; R. Dhamija; F. Di Capua; Z. DoleŽal; T. V. Dong; D. Epifanov; T. Ferber; D. Ferlewicz; B. G. Fulsom; R. Garg; V. Gaur; N. Gabyshev; A. Giri; P. Goldenzweig; B. Golob; E. Graziani; Y. Guan; K. Gudkova; C. Hadjivasiliou; T. Hara; K. Hayasaka; H. Hayashii; M. T. Hedges; W. S. Hou; K. Inami; G. Inguglia; A. Ishikawa; R. Itoh; M. Iwasaki; Y. Iwasaki; W. W. Jacobs; E. J. Jang; Y. Jin; K. K. Joo; J. Kahn; A. B. Kaliyar; K. H. Kang; T. Kawasaki; C. Kiesling; C. H. Kim; D. Y. Kim; K. H. Kim; Y. K. Kim; K. Kinoshita; P. Kodyš; S. Kohani; T. Konno; A. Korobov; S. Korpar; E. Kovalenko; P. KriŽan; R. Kroeger; P. Krokovny; M. Kumar; R. Kumar; K. Kumara; Y. J. Kwon; T. Lam; M. Laurenza; S. C. Lee; J. Li; L. K. Li; Y. Li; Y. B. Li; L. Li Gioi; J. Libby; K. Lieret; D. Liventsev; A. Martini; M. Masuda; T. Matsuda; D. Matvienko; S. K. Maurya; F. Meier; M. Merola; F. Metzner; K. Miyabayashi; R. Mizuk; G. B. Mohanty; R. Mussa; M. Nakao; D. Narwal; Z. Natkaniec; A. Natochii; L. Nayak; N. K. Nisar; S. Nishida; K. Nishimura; K. Ogawa; S. Ogawa; H. Ono; P. Oskin; P. Pakhlov; G. Pakhlova; T. Pang; S. Pardi; S. H. Park; S. Patra; S. Paul; T. K. Pedlar; R. Pestotnik; L. E. Piilonen; T. Podobnik; E. Prencipe; M. T. Prim; M. Röhrken; A. Rostomyan; N. Rout; G. Russo; D. Sahoo; S. Sandilya; A. Sangal; L. Santelj; T. Sanuki; V. Savinov; G. Schnell; J. Schueler; C. Schwanda; Y. Seino; K. Senyo; M. E. Sevior; M. Shapkin; C. Sharma; V. Shebalin; J. G. Shiu; B. Shwartz; J. B. Singh; A. Sokolov; E. Solovieva; S. Stanič; M. Starič; Z. S. Stottler; M. Sumihama; K. Sumisawa; T. Sumiyoshi; W. Sutcliffe; M. Takizawa; U. Tamponi; K. Tanida; F. Tenchini; K. Trabelsi; M. Uchida; S. Uehara; T. Uglov; Y. Unno; K. Uno; S. Uno; P. Urquijo; S. E. Vahsen; R. Van Tonder; G. Varner; A. Vinokurova; E. Waheed; D. Wang; E. Wang; M. Z. Wang; S. Watanuki; E. Won; B. D. Yabsley; W. Yan; S. B. Yang; H. Ye; J. Yelton; J. H. Yin; Y. Yusa; Y. Zhai; Z. P. Zhang; V. Zhilich; V. Zhukova

doi:10.1103/PhysRevLett.128.081804

Search for a Light Higgs Boson in Single-Photon Decays of ϒ (1S) Using ϒ (2S) →π+π- ϒ (1S) Tagging Method

S. Jia
, C. P. Shen
, I. Adachi
, H. Aihara
, S. Al Said
, D. M. Asner
, H. Atmacan
, T. Aushev
, R. Ayad
, V. Babu
, P. Behera
, K. Belous
, J. Bennett
, M. Bessner
, V. Bhardwaj
, B. Bhuyan
, T. Bilka
, A. Bobrov
, D. Bodrov
, G. Bonvicini

J. Borah, M. Bračko, P. Branchini, T. E. Browder, A. Budano, M. Campajola, D. Červenkov, M. C. Chang, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, S. J. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, S. Das, N. Dash, G. De Nardo, G. De Pietro, R. Dhamija, F. Di Capua, Z. DoleŽal, T. V. Dong, D. Epifanov, T. Ferber, D. Ferlewicz, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Giri, P. Goldenzweig, B. Golob, E. Graziani, Y. Guan, K. Gudkova, C. Hadjivasiliou, T. Hara, K. Hayasaka, H. Hayashii, M. T. Hedges, W. S. Hou, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, E. J. Jang, Y. Jin, K. K. Joo, J. Kahn, A. B. Kaliyar, K. H. Kang, T. Kawasaki, C. Kiesling, C. H. Kim, D. Y. Kim, K. H. Kim, Y. K. Kim, K. Kinoshita, P. Kodyš, S. Kohani, T. Konno, A. Korobov, S. Korpar, E. Kovalenko, P. KriŽan, R. Kroeger, P. Krokovny, M. Kumar, R. Kumar, K. Kumara, Y. J. Kwon, T. Lam, M. Laurenza, S. C. Lee, J. Li, L. K. Li, Y. Li, Y. B. Li, L. Li Gioi, J. Libby, K. Lieret, D. Liventsev, A. Martini, M. Masuda, T. Matsuda, D. Matvienko, S. K. Maurya, F. Meier, M. Merola, F. Metzner, K. Miyabayashi, R. Mizuk, G. B. Mohanty, R. Mussa, M. Nakao, D. Narwal, Z. Natkaniec, A. Natochii, L. Nayak, N. K. Nisar, S. Nishida, K. Nishimura, K. Ogawa, S. Ogawa, H. Ono, P. Oskin, P. Pakhlov, G. Pakhlova, T. Pang, S. Pardi, S. H. Park, S. Patra, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, T. Podobnik, E. Prencipe, M. T. Prim, M. Röhrken, A. Rostomyan, N. Rout, G. Russo, D. Sahoo, S. Sandilya, A. Sangal, L. Santelj, T. Sanuki, V. Savinov, G. Schnell, J. Schueler, C. Schwanda, Y. Seino, K. Senyo, M. E. Sevior, M. Shapkin, C. Sharma, V. Shebalin, J. G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, E. Solovieva, S. Stanič, M. Starič, Z. S. Stottler, M. Sumihama, K. Sumisawa, T. Sumiyoshi, W. Sutcliffe, M. Takizawa, U. Tamponi, K. Tanida, F. Tenchini, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, K. Uno, S. Uno, P. Urquijo, S. E. Vahsen, R. Van Tonder, G. Varner, A. Vinokurova, E. Waheed, D. Wang, E. Wang, M. Z. Wang, S. Watanuki, E. Won, B. D. Yabsley, W. Yan, S. B. Yang, H. Ye, J. Yelton, J. H. Yin, Y. Yusa, Y. Zhai, Z. P. Zhang, V. Zhilich, V. Zhukova

Department of Physics

Fudan University
The Graduate University for Advanced Studies
High Energy Accelerator Research Organization, Tsukuba
The University of Tokyo
King Abdulaziz University
University of Tabuk
Brookhaven National Laboratory
University of Cincinnati
Higher School of Economics
German Electron Synchrotron
Indian Institute of Technology Madras
Institute for High Energy Physics
University of Mississippi
University of Hawai'i at Mānoa
Indian Institute of Science Education and Research Mohali
Indian Institute of Technology Guwahati
Charles University
RAS - Budker Institute of Nuclear Physics
Novosibirsk State University
RAS - P.N. Lebedev Physics Institute
Wayne State University
Jožef Stefan Institute
University of Maribor
National Institute for Nuclear Physics
University of Naples Federico II
Fu Jen Catholic University
National Taiwan University
Max Planck Institute for Physics (Werner Heisenberg Institute)
National Central University
Hanyang University
Korea Institute of Science and Technology Information
Yonsei University
Chung-Ang University
Sungkyunkwan University
Iowa State University
Malaviya National Institute of Technology
Indian Institute of Technology Hyderabad
Duy Tan University
University of Melbourne
Pacific Northwest National Laboratory
Panjab University
Virginia Polytechnic Institute and State University
Karlsruhe Institute of Technology
University of Ljubljana
Niigata University
Nara Women's University
Nagoya University
Austrian Academy of Sciences
Osaka Metropolitan University
Indiana University Bloomington
Gyeongsang National University
Chonnam National University
Tata Institute of Fundamental Research
Kitasato University
Soongsil University
Punjab Agricultural University
Roma Tre University
Kyungpook National University
Ludwig Maximilian University of Munich
The University of Osaka
University of Miyazaki
Duke University
H. Niewodniczanski Institute of Nuclear Physics
Toho University
Nippon Dental University
Moscow Engineering Physics Institute
University of Pittsburgh
Technical University of Munich
Luther College, Decorah
Jülich Research Centre
University of Bonn
Tohoku University
University of the Basque Country
Ikerbasque Basque Foundation for Science
Yamagata University
University of Petroleum and Energy Studies
University of Nova Gorica
Gifu University
Tokyo Metropolitan University
RIKEN
Showa Pharmaceutical University
Japan Atomic Energy Agency
Université Paris-Saclay
Institute of Science Tokyo
University of Florida
Korea University
The University of Sydney
University of Science and Technology of China

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

We search for a light Higgs boson (A0) decaying into a τ+τ- or μ+μ- pair in the radiative decays of ϒ(1S). The production of ϒ(1S) mesons is tagged by ϒ(2S)→π+π-ϒ(1S) transitions, using 158×106 ϒ(2S) events accumulated with the Belle detector at the KEKB asymmetric energy electron-positron collider. No significant A0 signals in the mass range from the τ+τ- or μ+μ- threshold to 9.2 GeV/c2 are observed. We set the upper limits at 90% credibility level (C.L.) on the product branching fractions for ϒ(1S)→γA0 and A0→τ+τ- varying from 3.8×10-6 to 1.5×10-4. Our results represent an approximately twofold improvement on the current world best upper limits for the ϒ(1S)→γA0(→τ+τ-) production. For A0→μ+μ-, the upper limits on the product branching fractions for ϒ(1S)→γA0 and A0→μ+μ- are at the same level as the world average limits, and vary from 3.1×10-7 to 1.6×10-5. The upper limits at 90% credibility level on the Yukawa coupling fϒ(1S) and mixing angle sinθA0 are also given.

Original language	English
Article number	081804
Journal	Physical Review Letters
Volume	128
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.128.081804
State	Published - 25 Feb 2022

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10.1103/PhysRevLett.128.081804

Cite this

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., ... Zhukova, V. (2022). Search for a Light Higgs Boson in Single-Photon Decays of ϒ (1S) Using ϒ (2S) →π+π- ϒ (1S) Tagging Method. Physical Review Letters, 128(8), Article 081804. https://doi.org/10.1103/PhysRevLett.128.081804

@article{08fa8963ca5d4b9f8de0fbfb4ce5f84e,

title = "Search for a Light Higgs Boson in Single-Photon Decays of ϒ (1S) Using ϒ (2S) →π+π- ϒ (1S) Tagging Method",

abstract = "We search for a light Higgs boson (A0) decaying into a τ+τ- or μ+μ- pair in the radiative decays of ϒ(1S). The production of ϒ(1S) mesons is tagged by ϒ(2S)→π+π-ϒ(1S) transitions, using 158×106 ϒ(2S) events accumulated with the Belle detector at the KEKB asymmetric energy electron-positron collider. No significant A0 signals in the mass range from the τ+τ- or μ+μ- threshold to 9.2 GeV/c2 are observed. We set the upper limits at 90\% credibility level (C.L.) on the product branching fractions for ϒ(1S)→γA0 and A0→τ+τ- varying from 3.8×10-6 to 1.5×10-4. Our results represent an approximately twofold improvement on the current world best upper limits for the ϒ(1S)→γA0(→τ+τ-) production. For A0→μ+μ-, the upper limits on the product branching fractions for ϒ(1S)→γA0 and A0→μ+μ- are at the same level as the world average limits, and vary from 3.1×10-7 to 1.6×10-5. The upper limits at 90\% credibility level on the Yukawa coupling fϒ(1S) and mixing angle sinθA0 are also given.",

author = "S. Jia and Shen, \{C. P.\} and I. Adachi and H. Aihara and \{Al Said\}, S. and Asner, \{D. M.\} and H. Atmacan and T. Aushev and R. Ayad and V. Babu and P. Behera and K. Belous and J. Bennett and M. Bessner and V. Bhardwaj and B. Bhuyan and T. Bilka and A. Bobrov and D. Bodrov and G. Bonvicini and J. Borah and M. Bra{\v c}ko and P. Branchini and Browder, \{T. E.\} and A. Budano and M. Campajola and D. {\v C}ervenkov and Chang, \{M. C.\} and P. Chang and V. Chekelian and A. Chen and Cheon, \{B. G.\} and K. Chilikin and Cho, \{H. E.\} and K. Cho and Cho, \{S. J.\} and Choi, \{S. K.\} and Y. Choi and S. Choudhury and D. Cinabro and S. Cunliffe and S. Das and N. Dash and \{De Nardo\}, G. and \{De Pietro\}, G. and R. Dhamija and \{Di Capua\}, F. and Z. Dole{\v Z}al and Dong, \{T. V.\} and D. Epifanov and T. Ferber and D. Ferlewicz and Fulsom, \{B. G.\} and R. Garg and V. Gaur and N. Gabyshev and A. Giri and P. Goldenzweig and B. Golob and E. Graziani and Y. Guan and K. Gudkova and C. Hadjivasiliou and T. Hara and K. Hayasaka and H. Hayashii and Hedges, \{M. T.\} and Hou, \{W. S.\} and K. Inami and G. Inguglia and A. Ishikawa and R. Itoh and M. Iwasaki and Y. Iwasaki and Jacobs, \{W. W.\} and Jang, \{E. J.\} and Y. Jin and Joo, \{K. K.\} and J. Kahn and Kaliyar, \{A. B.\} and Kang, \{K. H.\} and T. Kawasaki and C. Kiesling and Kim, \{C. H.\} and Kim, \{D. Y.\} and Kim, \{K. H.\} and Kim, \{Y. K.\} and K. Kinoshita and P. Kody{\v s} and S. Kohani and T. Konno and A. Korobov and S. Korpar and E. Kovalenko and P. Kri{\v Z}an and R. Kroeger and P. Krokovny and M. Kumar and R. Kumar and K. Kumara and Kwon, \{Y. J.\} and T. Lam and M. Laurenza and Lee, \{S. C.\} and J. Li and Li, \{L. K.\} and Y. Li and Li, \{Y. B.\} and \{Li Gioi\}, L. and J. Libby and K. Lieret and D. Liventsev and A. Martini and M. Masuda and T. Matsuda and D. Matvienko and Maurya, \{S. K.\} and F. Meier and M. Merola and F. Metzner and K. Miyabayashi and R. Mizuk and Mohanty, \{G. B.\} and R. Mussa and M. Nakao and D. Narwal and Z. Natkaniec and A. Natochii and L. Nayak and Nisar, \{N. K.\} and S. Nishida and K. Nishimura and K. Ogawa and S. Ogawa and H. Ono and P. Oskin and P. Pakhlov and G. Pakhlova and T. Pang and S. Pardi and Park, \{S. H.\} and S. Patra and S. Paul and Pedlar, \{T. K.\} and R. Pestotnik and Piilonen, \{L. E.\} and T. Podobnik and E. Prencipe and Prim, \{M. T.\} and M. R{\"o}hrken and A. Rostomyan and N. Rout and G. Russo and D. Sahoo and S. Sandilya and A. Sangal and L. Santelj and T. Sanuki and V. Savinov and G. Schnell and J. Schueler and C. Schwanda and Y. Seino and K. Senyo and Sevior, \{M. E.\} and M. Shapkin and C. Sharma and V. Shebalin and Shiu, \{J. G.\} and B. Shwartz and Singh, \{J. B.\} and A. Sokolov and E. Solovieva and S. Stani{\v c} and M. Stari{\v c} and Stottler, \{Z. S.\} and M. Sumihama and K. Sumisawa and T. Sumiyoshi and W. Sutcliffe and M. Takizawa and U. Tamponi and K. Tanida and F. Tenchini and K. Trabelsi and M. Uchida and S. Uehara and T. Uglov and Y. Unno and K. Uno and S. Uno and P. Urquijo and Vahsen, \{S. E.\} and \{Van Tonder\}, R. and G. Varner and A. Vinokurova and E. Waheed and D. Wang and E. Wang and Wang, \{M. Z.\} and S. Watanuki and E. Won and Yabsley, \{B. D.\} and W. Yan and Yang, \{S. B.\} and H. Ye and J. Yelton and Yin, \{J. H.\} and Y. Yusa and Y. Zhai and Zhang, \{Z. P.\} and V. Zhilich and V. Zhukova",

note = "Publisher Copyright: {\textcopyright} 2022 authors. Published by the American Physical Society.",

year = "2022",

month = feb,

day = "25",

doi = "10.1103/PhysRevLett.128.081804",

language = "English",

volume = "128",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "8",

}

Jia, S, Shen, CP, Adachi, I, Aihara, H, Al Said, S, Asner, DM, 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, TE, Budano, A, Campajola, M, Červenkov, D, Chang, MC, Chang, P, Chekelian, V, Chen, A, Cheon, BG, Chilikin, K, Cho, HE, Cho, K, Cho, SJ, Choi, SK, 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, TV, Epifanov, D, Ferber, T, Ferlewicz, D, Fulsom, BG, 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, MT, Hou, WS, Inami, K, Inguglia, G, Ishikawa, A, Itoh, R, Iwasaki, M, Iwasaki, Y, Jacobs, WW, Jang, EJ, Jin, Y, Joo, KK, Kahn, J, Kaliyar, AB, Kang, KH, Kawasaki, T, Kiesling, C, Kim, CH, Kim, DY, Kim, KH, Kim, YK, 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, YJ, Lam, T, Laurenza, M, Lee, SC, Li, J, Li, LK, Li, Y, Li, YB, Li Gioi, L, Libby, J, Lieret, K, Liventsev, D, Martini, A, Masuda, M, Matsuda, T, Matvienko, D, Maurya, SK, Meier, F, Merola, M, Metzner, F, Miyabayashi, K, Mizuk, R, Mohanty, GB, Mussa, R, Nakao, M, Narwal, D, Natkaniec, Z, Natochii, A, Nayak, L, Nisar, NK, Nishida, S, Nishimura, K, Ogawa, K, Ogawa, S, Ono, H, Oskin, P, Pakhlov, P, Pakhlova, G, Pang, T, Pardi, S, Park, SH, Patra, S, Paul, S, Pedlar, TK, Pestotnik, R, Piilonen, LE, Podobnik, T, Prencipe, E, Prim, MT, 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, ME, Shapkin, M, Sharma, C, Shebalin, V, Shiu, JG, Shwartz, B, Singh, JB, Sokolov, A, Solovieva, E, Stanič, S, Starič, M, Stottler, ZS, 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, SE, Van Tonder, R, Varner, G, Vinokurova, A, Waheed, E, Wang, D, Wang, E, Wang, MZ, Watanuki, S, Won, E, Yabsley, BD, Yan, W, Yang, SB, Ye, H, Yelton, J, Yin, JH, Yusa, Y, Zhai, Y, Zhang, ZP, Zhilich, V & Zhukova, V 2022, 'Search for a Light Higgs Boson in Single-Photon Decays of ϒ (1S) Using ϒ (2S) →π+π- ϒ (1S) Tagging Method', Physical Review Letters, vol. 128, no. 8, 081804. https://doi.org/10.1103/PhysRevLett.128.081804

TY - JOUR

T1 - Search for a Light Higgs Boson in Single-Photon Decays of ϒ (1S) Using ϒ (2S) →π+π- ϒ (1S) Tagging Method

AU - Jia, S.

AU - Shen, C. P.

AU - Adachi, I.

AU - Aihara, H.

AU - Al Said, S.

AU - Asner, D. M.

AU - Atmacan, H.

AU - Aushev, T.

AU - Ayad, R.

AU - Babu, V.

AU - Behera, P.

AU - Belous, K.

AU - Bennett, J.

AU - Bessner, M.

AU - Bhardwaj, V.

AU - Bhuyan, B.

AU - Bilka, T.

AU - Bobrov, A.

AU - Bodrov, D.

AU - Bonvicini, G.

AU - Borah, J.

AU - Bračko, M.

AU - Branchini, P.

AU - Browder, T. E.

AU - Budano, A.

AU - Campajola, M.

AU - Červenkov, D.

AU - Chang, M. C.

AU - Chang, P.

AU - Chekelian, V.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Cho, H. E.

AU - Cho, K.

AU - Cho, S. J.

AU - Choi, S. K.

AU - Choi, Y.

AU - Choudhury, S.

AU - Cinabro, D.

AU - Cunliffe, S.

AU - Das, S.

AU - Dash, N.

AU - De Nardo, G.

AU - De Pietro, G.

AU - Dhamija, R.

AU - Di Capua, F.

AU - DoleŽal, Z.

AU - Dong, T. V.

AU - Epifanov, D.

AU - Ferber, T.

AU - Ferlewicz, D.

AU - Fulsom, B. G.

AU - Garg, R.

AU - Gaur, V.

AU - Gabyshev, N.

AU - Giri, A.

AU - Goldenzweig, P.

AU - Golob, B.

AU - Graziani, E.

AU - Guan, Y.

AU - Gudkova, K.

AU - Hadjivasiliou, C.

AU - Hara, T.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Hedges, M. T.

AU - Hou, W. S.

AU - Inami, K.

AU - Inguglia, G.

AU - Ishikawa, A.

AU - Itoh, R.

AU - Iwasaki, M.

AU - Iwasaki, Y.

AU - Jacobs, W. W.

AU - Jang, E. J.

AU - Jin, Y.

AU - Joo, K. K.

AU - Kahn, J.

AU - Kaliyar, A. B.

AU - Kang, K. H.

AU - Kawasaki, T.

AU - Kiesling, C.

AU - Kim, C. H.

AU - Kim, D. Y.

AU - Kim, K. H.

AU - Kim, Y. K.

AU - Kinoshita, K.

AU - Kodyš, P.

AU - Kohani, S.

AU - Konno, T.

AU - Korobov, A.

AU - Korpar, S.

AU - Kovalenko, E.

AU - KriŽan, P.

AU - Kroeger, R.

AU - Krokovny, P.

AU - Kumar, M.

AU - Kumar, R.

AU - Kumara, K.

AU - Kwon, Y. J.

AU - Lam, T.

AU - Laurenza, M.

AU - Lee, S. C.

AU - Li, J.

AU - Li, L. K.

AU - Li, Y.

AU - Li, Y. B.

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PY - 2022/2/25

Y1 - 2022/2/25

N2 - We search for a light Higgs boson (A0) decaying into a τ+τ- or μ+μ- pair in the radiative decays of ϒ(1S). The production of ϒ(1S) mesons is tagged by ϒ(2S)→π+π-ϒ(1S) transitions, using 158×106 ϒ(2S) events accumulated with the Belle detector at the KEKB asymmetric energy electron-positron collider. No significant A0 signals in the mass range from the τ+τ- or μ+μ- threshold to 9.2 GeV/c2 are observed. We set the upper limits at 90% credibility level (C.L.) on the product branching fractions for ϒ(1S)→γA0 and A0→τ+τ- varying from 3.8×10-6 to 1.5×10-4. Our results represent an approximately twofold improvement on the current world best upper limits for the ϒ(1S)→γA0(→τ+τ-) production. For A0→μ+μ-, the upper limits on the product branching fractions for ϒ(1S)→γA0 and A0→μ+μ- are at the same level as the world average limits, and vary from 3.1×10-7 to 1.6×10-5. The upper limits at 90% credibility level on the Yukawa coupling fϒ(1S) and mixing angle sinθA0 are also given.

AB - We search for a light Higgs boson (A0) decaying into a τ+τ- or μ+μ- pair in the radiative decays of ϒ(1S). The production of ϒ(1S) mesons is tagged by ϒ(2S)→π+π-ϒ(1S) transitions, using 158×106 ϒ(2S) events accumulated with the Belle detector at the KEKB asymmetric energy electron-positron collider. No significant A0 signals in the mass range from the τ+τ- or μ+μ- threshold to 9.2 GeV/c2 are observed. We set the upper limits at 90% credibility level (C.L.) on the product branching fractions for ϒ(1S)→γA0 and A0→τ+τ- varying from 3.8×10-6 to 1.5×10-4. Our results represent an approximately twofold improvement on the current world best upper limits for the ϒ(1S)→γA0(→τ+τ-) production. For A0→μ+μ-, the upper limits on the product branching fractions for ϒ(1S)→γA0 and A0→μ+μ- are at the same level as the world average limits, and vary from 3.1×10-7 to 1.6×10-5. The upper limits at 90% credibility level on the Yukawa coupling fϒ(1S) and mixing angle sinθA0 are also given.

UR - https://www.scopus.com/pages/publications/85126389684

U2 - 10.1103/PhysRevLett.128.081804

DO - 10.1103/PhysRevLett.128.081804

M3 - Article

C2 - 35275679

AN - SCOPUS:85126389684

SN - 0031-9007

VL - 128

JO - Physical Review Letters

JF - Physical Review Letters

IS - 8

M1 - 081804

ER -

Search for a Light Higgs Boson in Single-Photon Decays of ϒ (1S) Using ϒ (2S) →π+π- ϒ (1S) Tagging Method

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