Observation of $Z_b\left(10610\right)$ and $Z_b\left(10650\right)$ Decaying to $B$ Mesons

Journal Article · 23 May 2016 · Physical Review Letters

DOI: https://doi.org/10.1103/PhysRevLett.116.212001 · OSTI ID:1594390

Garmash, A. ^[1]; Abdesselam, A.; Adachi, I.; Aihara, H.; Asner, D. M.; Aushev, T.; Ayad, R.; Aziz, T.; Babu, V.; Badhrees, I.; Bakich, A. M.; Behera, P.; Bhardwaj, V.; Bhuyan, B.; Bobrov, A.; Bondar, A.; Bonvicini, G.; Bozek, A.; Bračko, M.; Browder, T. E. ; Červenkov, D.; Chekelian, V.; Chen, A.; Cheon, B. G.; Chilikin, K.; Cho, K.; Chobanova, V.; Choi, Y.; Cinabro, D.; Dalseno, J.; Danilov, M.; Dash, N.; Doležal, Z.; Drutskoy, A.; Dutta, D.; Eidelman, S.; Epifanov, D.; Farhat, H.; Fast, J. E.; Ferber, T.; Fulsom, B. G.; Gaur, V.; Gabyshev, N.; Gillard, R.; Goh, Y. M.; Goldenzweig, P.; Golob, B.; Hara, T.; Hayasaka, K.; Hayashii, H.; Iijima, T.; Ishikawa, A.; Itoh, R.; Iwasaki, Y.; Jaegle, I.; Joffe, D.; Joo, K. K.; Julius, T.; Kang, K. H.; Kato, E.; Kawasaki, T.; Kim, D. Y.; Kim, J. B.; Kim, K. T.; Kim, M. J.; Kim, S. H.; Kim, Y. J.; Kinoshita, K.; Korpar, S.; Križan, P.; Krokovny, P.; Kuhr, T.; Kuzmin, A.; Kwon, Y. -J.; Lange, J. S.; Lee, I. S.; Li, C.; Li, H.; Li, L.; Li Gioi, L.; Libby, J.; Liventsev, D.; Lukin, P.; Masuda, M.; Matvienko, D.; Miyabayashi, K.; Miyata, H.; Mizuk, R.; Mohanty, G. B.; Moll, A.; Mori, T.; Mussa, R.; Nakano, E.; Nakao, M.; Nanut, T.; Natkaniec, Z.; Nishida, S.; Olsen, S. L.; Pakhlov, P.; Pakhlova, G.; Pal, B.; Park, H.; Pedlar, T. K.; Pestotnik, R.; Petrič, M.; Piilonen, L. E.; Pulvermacher, C.; Ribežl, E.; Ritter, M.; Rostomyan, A.; Sahoo, H.; Sakai, Y.; Sandilya, S.; Sanuki, T.; Savinov, V.; Schneider, O.; Schnell, G.; Schwanda, C.; Seino, Y.; Semmler, D.; Senyo, K.; Seong, I. S.; Sevior, M. E.; Shebalin, V.; Shen, C. P.; Shibata, T. -A.; Shiu, J. -G.; Shwartz, B.; Simon, F.; Sohn, Y. -S.; Solovieva, E.; Starič, M.; Sumiyoshi, T.; Tamponi, U.; Tanida, K.; Teramoto, Y.; Trabelsi, K.; Uchida, M.; Uehara, S.; Uglov, T.; Uno, S.; Van Hulse, C.; Vanhoefer, P.; Varner, G.; Vorobyev, V.; Wagner, M. N.; Wang, C. H.; Wang, M. -Z.; Wang, P.; Watanabe, Y.; Williams, K. M.; Won, E.; Yamamoto, H.; Yamaoka, J.; Yashchenko, S.; Yelton, J.; Yook, Y.; Yuan, C. Z.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.; Zupanc, A.

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1. Virginia Polytechnic Institute and State University

We detail the analysis of the three-body $e^{+}{e}^{-}\to B\overline{B}{\pi }^{\pm }$, $B{\overline{B}}^{*}{\pi }^{\pm }$, and $B^{*}{\overline{B}}^{*}{\pi }^{\pm }$ processes, including the first observations of the $Z_b^{\pm }\left(10610\right)\to [B{\overline{B}}^{*}+\mathrm{c}.\mathrm{c}.{]}^{\pm }$ and $Z_b^{\pm }\left(10650\right)\to [B^{*}{\overline{B}}^{*}{]}^{\pm }$ transitions that are found to dominate the corresponding final states. We measure Born cross sections for the three-body production of $\sigma (e^{+}{e}^{-}\to [B{\overline{B}}^{*}+\mathrm{c}.\mathrm{c}.{]}^{\pm }{\pi }^{\mp })=[17.4\pm 1.6\left(\text{stat}\right)\pm 1.9\left(\text{syst}\right)]\mathrm{pb}$ and $\sigma (e^{+}{e}^{-}\to [B^{*}{\overline{B}}^{*}{]}^{\pm }{\pi }^{\mp })=[8.75\pm 1.15\left(\text{stat}\right)\pm 1.04\left(\text{syst}\right)]\mathrm{pb}$ and set a 90% C.L. upper limit of $\sigma (e^{+}{e}^{-}\to [B\overline{B}{]}^{\pm }{\pi }^{\mp })<2.9\mathrm{pb}$. The results are based on a $121.4{\mathrm{fb}}^{-1}$ data sample collected with the Belle detector at a center-of-mass energy near the $\mathrm{{\rm Y}}\left(10860\right)$ peak.

• Research Organization: Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• Contributing Organization: Belle Collaboration
• Grant/Contract Number: SC0009973
• OSTI ID: 1594390
• Alternate ID(s): OSTI ID: 1344055; OSTI ID: 1254349
• Report Number(s): PNNL-SA--120664
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 21 Vol. 116; ISSN 0031-9007; ISSN PRLTAO
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English