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  • Letter
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Search for the decay B0→γγ using Belle and Belle II data

I. Adachi, L. Aggarwal, H. Aihara, N. Akopov, A. Aloisio, S. Al Said, N. Althubiti, N. Anh Ky, D. M. Asner et al. (Belle and Belle II Collaborations)

D. M. Asner, H. Atmacan, T. Aushev, V. Aushev, M. Aversano, R. Ayad, V. Babu, H. Bae, S. Bahinipati, P. Bambade, Sw. Banerjee, S. Bansal, M. Barrett, J. Baudot, A. Baur, A. Beaubien, F. Becherer, J. Becker, K. Belous, J. V. Bennett, F. U. Bernlochner, V. Bertacchi, E. Bertholet, M. Bessner, S. Bettarini, B. Bhuyan, F. Bianchi, L. Bierwirth, T. Bilka, D. Biswas, A. Bobrov, D. Bodrov, A. Bolz, J. Borah, A. Boschetti, A. Bozek, M. Bračko, P. Branchini, R. A. Briere, T. E. Browder, A. Budano, S. Bussino, Q. Campagna, M. Campajola, L. Cao, G. Casarosa, C. Cecchi, J. Cerasoli, M.-C. Chang, P. Chang, P. Cheema, C. Chen, B. G. Cheon, K. Chilikin, K. Chirapatpimol, H.-E. Cho, K. Cho, S.-J. Cho, S.-K. Choi, S. Choudhury, L. Corona, J. X. Cui, F. Dattola, E. De La Cruz-Burelo, S. A. De La Motte, G. De Nardo, M. De Nuccio, G. De Pietro, R. de Sangro, M. Destefanis, S. Dey, R. Dhamija, A. Di Canto, F. Di Capua, J. Dingfelder, Z. Doležal, I. Domínguez Jiménez, T. V. Dong, M. Dorigo, D. Dorner, K. Dort, D. Dossett, S. Dreyer, S. Dubey, K. Dugic, G. Dujany, P. Ecker, M. Eliachevitch, D. Epifanov, P. Feichtinger, T. Ferber, T. Fillinger, C. Finck, G. Finocchiaro, A. Fodor, F. Forti, A. Frey, B. G. Fulsom, E. Ganiev, M. Garcia-Hernandez, G. Gaudino, V. Gaur, A. Gaz, A. Gellrich, G. Ghevondyan, D. Ghosh, H. Ghumaryan, G. Giakoustidis, R. Giordano, A. Giri, A. Glazov, B. Gobbo, R. Godang, O. Gogota, P. Goldenzweig, W. Gradl, E. Graziani, D. Greenwald, Z. Gruberová, T. Gu, K. Gudkova, I. Haide, Y. Han, T. Hara, C. Harris, K. Hayasaka, H. Hayashii, S. Hazra, C. Hearty, M. T. Hedges, A. Heidelbach, I. Heredia de la Cruz, M. Hernández Villanueva, T. Higuchi, M. Hoek, M. Hohmann, P. Horak, C.-L. Hsu, T. Humair, T. Iijima, K. Inami, N. Ipsita, A. Ishikawa, R. Itoh, M. Iwasaki, P. Jackson, W. W. Jacobs, D. E. Jaffe, E.-J. Jang, S. Jia, Y. Jin, A. Johnson, K. K. Joo, H. Junkerkalefeld, D. Kalita, A. B. Kaliyar, J. Kandra, K. H. Kang, S. Kang, G. Karyan, T. Kawasaki, F. Keil, C. Kiesling, C.-H. Kim, D. Y. Kim, K.-H. Kim, Y.-K. Kim, H. Kindo, K. Kinoshita, P. Kodyš, T. Koga, S. Kohani, K. Kojima, A. Korobov, S. Korpar, E. Kovalenko, R. Kowalewski, P. Križan, P. Krokovny, T. Kuhr, Y. Kulii, J. Kumar, R. Kumar, K. Kumara, T. Kunigo, A. Kuzmin, Y.-J. Kwon, S. Lacaprara, K. Lalwani, T. Lam, J. S. Lange, M. Laurenza, R. Leboucher, M. J. Lee, C. Lemettais, P. Leo, D. Levit, L. K. Li, S. X. Li, Y. Li, Y. B. Li, J. Libby, Z. Liptak, M. H. Liu, Q. Y. Liu, Z. Q. Liu, D. Liventsev, S. Longo, T. Lueck, C. Lyu, Y. Ma, M. Maggiora, S. P. Maharana, R. Maiti, S. Maity, G. Mancinelli, R. Manfredi, E. Manoni, M. Mantovano, D. Marcantonio, S. Marcello, C. Marinas, C. Martellini, A. Martens, A. Martini, T. Martinov, L. Massaccesi, M. Masuda, K. Matsuoka, D. Matvienko, S. K. Maurya, J. A. McKenna, F. Meier, M. Merola, F. Metzner, C. Miller, M. Mirra, S. Mitra, K. Miyabayashi, G. B. Mohanty, S. Mondal, S. Moneta, H.-G. Moser, M. Mrvar, I. Nakamura, M. Nakao, Y. Nakazawa, M. Naruki, D. Narwal, Z. Natkaniec, A. Natochii, M. Nayak, G. Nazaryan, M. Neu, M. Niiyama, S. Nishida, S. Ogawa, Y. Onishchuk, H. Ono, G. Pakhlova, S. Pardi, K. Parham, H. Park, J. Park, S.-H. Park, B. Paschen, A. Passeri, S. Patra, S. Paul, T. K. Pedlar, R. Peschke, R. Pestotnik, M. Piccolo, L. E. Piilonen, G. Pinna Angioni, P. L. M. Podesta-Lerma, T. Podobnik, S. Pokharel, C. Praz, S. Prell, E. Prencipe, M. T. Prim, I. Prudiiev, H. Purwar, P. Rados, G. Raeuber, S. Raiz, N. Rauls, M. Reif, S. Reiter, M. Remnev, L. Reuter, I. Ripp-Baudot, G. Rizzo, S. H. Robertson, M. Roehrken, J. M. Roney, A. Rostomyan, N. Rout, S. Sandilya, L. Santelj, Y. Sato, V. Savinov, B. Scavino, S. Schneider, G. Schnell, M. Schnepf, K. Schoenning, C. Schwanda, Y. Seino, A. Selce, K. Senyo, J. Serrano, M. E. Sevior, C. Sfienti, W. Shan, C. Sharma, C. P. Shen, X. D. Shi, T. Shillington, T. Shimasaki, J.-G. Shiu, D. Shtol, A. Sibidanov, F. Simon, J. B. Singh, J. Skorupa, R. J. Sobie, M. Sobotzik, A. Soffer, A. Sokolov, E. Solovieva, S. Spataro, B. Spruck, M. Starič, P. Stavroulakis, S. Stefkova, R. Stroili, Y. Sue, M. Sumihama, N. Suwonjandee, H. Svidras, M. Takizawa, U. Tamponi, K. Tanida, F. Tenchini, A. Thaller, O. Tittel, R. Tiwary, D. Tonelli, E. Torassa, K. Trabelsi, I. Ueda, T. Uglov, K. Unger, Y. Unno, K. Uno, S. Uno, Y. Ushiroda, S. E. Vahsen, R. van Tonder, K. E. Varvell, M. Veronesi, A. Vinokurova, V. S. Vismaya, L. Vitale, V. Vobbilisetti, R. Volpe, A. Vossen, B. Wach, M. Wakai, S. Wallner, E. Wang, M.-Z. Wang, X. L. Wang, Z. Wang, A. Warburton, S. Watanuki, C. Wessel, E. Won, Y. Xie, X. P. Xu, B. D. Yabsley, S. Yamada, W. Yan, S. B. Yang, J. Yelton, J. H. Yin, Y. M. Yook, K. Yoshihara, C. Z. Yuan, Y. Yusa, L. Zani, F. Zeng, B. Zhang, V. Zhilich, J. S. Zhou, Q. D. Zhou, V. I. Zhukova, and R. Žlebčík (Belle and Belle II Collaborations)

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Phys. Rev. D 110, L031106 – Published 26 August, 2024

DOI: https://doi.org/10.1103/PhysRevD.110.L031106

Abstract

We report the result of a search for the rare decay B0→γγ using a combined dataset of 753×106  BB¯ pairs collected by the Belle experiment and 387×106  BB¯ pairs collected by the Belle II experiment from decays of the ϒ(4S) resonance produced in e+e− collisions. A simultaneous fit to the Belle and Belle II data sets yields 11.0−5.5+6.5 signal events, corresponding to a 2.5σ significance. We determine the branching fraction B(B0→γγ)=(3.7−1.8+2.2(stat)±0.5(syst))×10−8 and set a 90% credibility level upper limit of B(B0→γγ)<6.4×10−8.

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References (34)

  1. Y.-L. Shen, Y.-M. Wang, and Y.-B. Wei, J. High Energy Phys. 12 (2020) 169.
  2. Qin Qin, Y.-L. Shen, C. Wang, and Y.-M. Wang, Phys. Rev. Lett. 131, 091902 (2023).
  3. G. G. Devidze and G. R. Jibuti, Phys. Lett. B 429, 48 (1998).
  4. G. Devidze, A. Liparteliani, and Ulf-G. Meißner, Phys. Lett. B 634, 59 (2006).
  5. J. I. Aranda, J Montano, F. Ramirez-Zavaleta, J. J. Toscano, and E. S. Tututi, Phys. Rev. D 82, 054002 (2010).
  6. P. del Amo Sanchez et al. (BABAR Collaboration, Phys. Rev. D 83, 032006 (2011).
  7. S. Villa et al. (Belle Collaboration), Phys. Rev. D 73, 051107 (2006).
  8. S. Kurokawa and E. Kikutani, Nucl. Instrum. Methods Phys. Res., Sect. A 499, 1 (2003); T. Abe et al., Prog. Theor. Exp. Phys. 2013, 03A001 (2013), and references therein.
  9. A. Abashian et al. (Belle Collaboration), Nucl. Instrum. Methods Phys. Res., Sect. A 479, 117 (2002).
  10. T. Abe et al. (Belle II Collaboration), KEK Report No. 2010-1, 2010, arXiv:1011.0352.
  11. A. Kazunori, F. Kazuro, K. Haruyo (SuperKEKB Accelerator Team), Nucl. Instrum. Methods Phys. Res., Sect. A 907, 188 (2018).
  12. R. L. Workman et al. (Particle Data Group), Prog. Theor. Exp. Phys. 2022, 083C01 (2022).
  13. D. J. Lange, Nucl. Instrum. Methods Phys. Res., Sect. A 462, 152 (2001).
  14. T. Sjostrand et al., Comput. Phys. Commun. 191, 159 (2015).
  15. R. Brun et al., geant 3.21, Report No. CERN DD/EE/84-1, 1984, https://inspirehep.net/literature/252007.
  16. Geant4 Collaboration, Nucl. Instrum. Methods Phys. Res., Sect. A 506, 250 (2003).
  17. T. Sjostrand, S. Mrenna, and P. Z. Skands, J. High Energy Phys. 05 (2006) 026.
  18. S. Jadach, B. F. L. Ward, and Z. Was, Comput. Phys. Commun. 130, 260 (2000).
  19. S. Jadach, Z. Was, R. Decker, and J. H. Kuhn, Comput. Phys. Commun. 76, 361 (1993).
  20. M. Gelb et al., Comput. Software Big Sci. 2, 9 (2018).
  21. T. Kuhr, C. Pulvermacher, M. Ritter et al., Comput. Software Big Sci. 3, 1 (2019).
  22. T. Kuhr et al. (Belle II Collaboration), Belle II Analysis Software Framework (BASF2), 10.5281/zenodo.5574115 (2021).
  23. T. Keck, Comput. Software Big Sci. 1, 2 (2017).
  24. A. Khotanzad and Y. H. Hong, IEEE Trans. Pattern Anal. Mach. Intell. 12, 489 (1990).
  25. G. C. Fox and S. Wolfram, Phys. Rev. Lett. 41, 1581 (1978).
  26. G. Punzi, eConf C030908, MODT002 (2003), 10.48550/arXiv.physics/0308063.
  27. E. Farhi, Phys. Rev. Lett. 39, 1587 (1977).
  28. F. Abudinén et al. (Belle II Collaboration), Eur. Phys. J. C 82, 283 (2022).
  29. John E. Angus, SIAM Rev. 36, 652 (1994).
  30. Kyle S. Cranmer, Comput. Phys. Commun. 136, 198 (2001).
  31. H. Albrecht et al. (ARGUS Collaboration), Phys. Lett. B 241, 278 (1990).
  32. S. Choudhury et al. (Belle Collaboration), Phys. Rev. D 107, L031102 (2023).

  33. For Bayesian upper limits, it is now standard to quote credibility intervals rather than confidence levels, which are appropriate for frequentist analysis [34].

  34. K. Gray et al., J. Mod. Appl. Stat. Methods 14, 8 (2015).

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Phys. Rev. D 110, L031106– Published 26 August, 2024
  • Received 1 June 2024
  • Accepted 11 July 2024
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