Search for $B^0$ decays to invisible final states ( $+\gamma$ ) at Belle

Journal Article · Wed Jul 08 00:00:00 EDT 2020 · Physical Review. D.

DOI:https://doi.org/10.1103/PhysRevD.102.012003· OSTI ID:1637748

Ku, Y. ; Chang, P.; Adachi, I.; Adamczyk, K.; Aihara, H.; Asner, D. M.; Aushev, T.; Ayad, R.; Behera, P.; Beleño, C.; Bennett, J.; Bhardwaj, V.; Bilka, T.; Biswal, J.; Bonvicini, G.; Bozek, A.; Bračko, M.; Chang, M. -C.; Chekelian, V.; Chilikin, K. ; Cho, K.; Choi, S. -K.; Choi, Y.; Cinabro, D.; Cunliffe, S.; Dash, N.; De Nardo, G.; Dong, T. V.; Eidelman, S.; Epifanov, D.; Fast, J. E.; Fulsom, B. G.; Garg, R.; Gaur, V.; Gabyshev, N.; Garmash, A.; Goldenzweig, P.; Grzymkowska, O.; Guan, Y.; Hartbrich, O.; Hayasaka, K.; Hayashii, H.; Hernandez Villanueva, M.; Higuchi, T.; Hou, W. -S.; Hsu, C. -L.; Huang, K.; Inami, K.; Inguglia, G.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Jia, S.; Jin, Y.; Kang, K. H.; Kawasaki, T.; Kichimi, H.; Kiesling, C.; Kim, C. H.; Kim, D. Y.; Kimmel, T. D.; Kinoshita, K.; Kodyš, P.; Korpar, S.; Križan, P.; Kroeger, R.; Krokovny, P.; Kuhr, T.; Kulasiri, R.; Kumar, R.; Kwon, Y. -J.; Lai, Y. -T.; Li, Y. B.; Li Gioi, L.; Libby, J.; Lieret, K.; MacQueen, C.; Matvienko, D.; Merola, M.; Mizuk, R.; Mohanty, G. B.; Moon, T. J.; Mori, T.; Mussa, R.; Natkaniec, Z.; Nayak, M.; Nisar, N. K.; Nishida, S.; Nishimura, K.; Ogawa, K.; Ogawa, S.; Ono, H.; Oskin, P.; Pakhlov, P.; Pakhlova, G.; Park, H.; Park, S. -H.; Patra, S.; Pedlar, T. K.; Pestotnik, R.; Piilonen, L. E.; Podobnik, T.; Popov, V.; Prim, M. T.; Ritter, M.; Röhrken, M.; Rostomyan, A.; Rout, N.; Russo, G.; Sakai, Y.; Santelj, L.; Sanuki, T.; Savinov, V.; Schnell, G.; Schueler, J.; Schwanda, C.; Schwartz, A. J.; Senyo, K.; Shapkin, M.; Shiu, J. -G.; Shwartz, B.; Sokolov, A.; Solovieva, E.; Starič, M.; Stottler, Z. S.; Sumihama, M.; Sumiyoshi, T.; Takizawa, M.; Tamponi, U.; Tanida, K.; Tenchini, F.; Trabelsi, K.; Uchida, M.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Usov, Y.; Varner, G.; Varvell, K. E.; Vinokurova, A.; Wang, C. H.; Wang, E.; Wang, M. -Z.; Wang, P.; Wang, X. L.; Watanabe, M.; Won, E.; Xu, X.; Yang, S. B.; Ye, H.; Yuan, C. Z.; Zhang, Z. P.; Zhukova, V.

We report searches for B0→invisible and B0→invisible+γ decays, where the energy of the photon is required to be larger than 0.5 GeV. These results are obtained from a 711fb^-1 data sample that contains 772 x106 $$B|bar{B}$$ pairs and was collected near the Υ(4S) resonance with the Belle detector at the KEKB e+e- collider. We observe no significant signal for either decay and set upper limits on their branching fractions at 90% confidence level of $$\mathscr{B}$$(B0→invisible)<7.8×10-5 and $$\mathscr{B}$$(B0→invisible+γ)<1.6×10-5.

• Research Organization: Brookhaven National Laboratory (BNL), Upton, NY (United States); Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States); Univ. of Hawaii, Honolulu, HI (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP); KEK - High Energy Accelerator Research Organization; Ministry of Education, Culture, Sports, Science and Technology
• Contributing Organization: Belle Collaboration
• Grant/Contract Number: SC0012704; SC0009973; SC0010504
• OSTI ID: 1637748
• Alternate ID(s): OSTI ID: 1643993; OSTI ID: 1756640; OSTI ID: 1779738
• Report Number(s): BNL-216206-2020-JAAM; PRVDAQ; 012003
• Journal Information: Physical Review. D., Journal Name: Physical Review. D. Vol. 102 Journal Issue: 1; ISSN 2470-0010
• Publisher: American Physical Society (APS)
• Country of Publication: United States
• Language: English