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  • Letter
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Search for baryon and lepton number violating decays D→pℓ

S. Maity, R. Garg, S. Bahinipati, V. Bhardwaj, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev et al. (Belle Collaboration)

T. Aushev, R. Ayad, V. Babu, Sw. Banerjee, M. Bauer, J. Bennett, M. Bessner, D. Biswas, A. Bobrov, D. Bodrov, G. Bonvicini, J. Borah, M. Bračko, P. Branchini, A. Budano, M. Campajola, D. Červenkov, M.-C. Chang, P. Chang, K. Chilikin, H. E. Cho, K. Cho, S.-J. Cho, S.-K. Choi, Y. Choi, S. Choudhury, S. Das, N. Dash, G. De Pietro, R. Dhamija, F. Di Capua, J. Dingfelder, T. V. Dong, P. Ecker, D. Epifanov, T. Ferber, B. G. Fulsom, V. Gaur, A. Giri, P. Goldenzweig, E. Graziani, T. Gu, K. Gudkova, C. Hadjivasiliou, K. Hayasaka, H. Hayashii, S. Hazra, W.-S. Hou, C.-L. Hsu, K. Inami, N. Ipsita, A. Ishikawa, R. Itoh, M. Iwasaki, W. W. Jacobs, Y. Jin, D. Kalita, C. Kiesling, C. H. Kim, D. Y. Kim, K. Kinoshita, P. Kodyš, A. Korobov, S. Korpar, P. Križan, P. Krokovny, M. Kumar, R. Kumar, K. Kumara, A. Kuzmin, Y.-J. Kwon, T. Lam, S. C. Lee, D. Levit, L. K. Li, Y. Li, Y. B. Li, L. Li Gioi, K. Lieret, D. Liventsev, M. Masuda, T. Matsuda, D. Matvienko, S. K. Maurya, F. Meier, M. Merola, F. Metzner, R. Mizuk, G. B. Mohanty, R. Mussa, M. Nakao, D. Narwal, A. Natochii, L. Nayak, S. Nishida, S. Ogawa, H. Ono, P. Oskin, G. Pakhlova, S. Pardi, H. Park, J. Park, S.-H. Park, A. Passeri, S. Patra, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, T. Podobnik, S. Prell, E. Prencipe, M. T. Prim, N. Rout, G. Russo, Y. Sakai, S. Sandilya, L. Santelj, V. Savinov, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, W. Shan, C. Sharma, J.-G. Shiu, E. Solovieva, M. Starič, M. Sumihama, M. Takizawa, K. Tanida, F. Tenchini, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, K. E. Varvell, E. Wang, M.-Z. Wang, S. Watanuki, J. Wiechczynski, X. Xu, B. D. Yabsley, W. Yan, S. B. Yang, J. H. Yin, L. Yuan, Z. P. Zhang, V. Zhilich, and V. Zhukova (Belle Collaboration)

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Phys. Rev. D 109, L031101 – Published 5 February, 2024

DOI: https://doi.org/10.1103/PhysRevD.109.L031101

Abstract

We search for the baryon and lepton number violating charm decays, D→pℓ, where D is either a D0 or a D¯0 and ℓ is a muon or an electron, using a data sample of 921  fb−1 collected by the Belle detector at the KEKB asymmetric energy e+e− collider. In the absence of significant signals, we set upper limits on the branching fractions in the range (5–8)×10−7 at a 90% confidence level, depending on the decay mode.

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Phys. Rev. D 109, L031101– Published 5 February, 2024
  • Received 19 October 2023
  • Accepted 18 December 2023
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