Observation of B(s)⁰→J/ψf₀(980) and evidence for B(s)⁰→J/ψf₀(1370)

J Li; H Aihara; K Arinstein; V Aulchenko; T Aushev; T Aziz; A M Bakich; V Balagura; E Barberio; K Belous; V Bhardwaj; B Bhuyan; A Bozek; M Bračko; O Brovchenko; T E Browder; P Chang; A Chen; P Chen; B G Cheon; C-C Chiang; R Chistov; I-S Cho; K Cho; S-K Choi; Y Choi; J Dalseno; Z Doležal; A Drutskoy; S Eidelman; S Esen; M Feindt; V Gaur; N Gabyshev; A Garmash; B Golob; H Ha; J Haba; T Hara; H Hayashii; Y Horii; Y Hoshi; W-S Hou; Y B Hsiung; H J Hyun; T Iijima; A Ishikawa; R Itoh; Y Iwasaki; T Iwashita; T Julius; J H Kang; P Kapusta; N Katayama; T Kawasaki; H Kichimi; C Kiesling; H J Kim; H O Kim; M J Kim; S K Kim; Y J Kim; K Kinoshita; B R Ko; N Kobayashi; S Korpar; P Križan; T Kuhr; R Kumar; T Kumita; A Kuzmin; Y-J Kwon; J S Lange; M J Lee; S-H Lee; C-L Lim; C Liu; D Liventsev; R Louvot; J MacNaughton; A Matyja; S McOnie; K Miyabayashi; H Miyata; Y Miyazaki; G B Mohanty; A Moll; E Nakano; M Nakao; H Nakazawa; Z Natkaniec; S Neubauer; S Nishida; K Nishimura; O Nitoh; T Nozaki; T Ohshima; S Okuno; S L Olsen; P Pakhlov; G Pakhlova; C W Park; H Park; H K Park; R Pestotnik; M Petrič; L E Piilonen; A Poluektov; M Prim; K Prothmann; M Röhrken; M Rozanska; S Ryu; H Sahoo; Y Sakai; O Schneider; C Schwanda; A J Schwartz; R Seidl; K Senyo; M E Sevior; M Shapkin; V Shebalin; C P Shen; J-G Shiu; B Shwartz; F Simon; J B Singh; P Smerkol; Y-S Sohn; A Sokolov; E Solovieva; S Stanič; M Starič; J Stypula; M Sumihama; T Sumiyoshi; S Suzuki; S Tanaka; Y Teramoto; K Trabelsi; M Uchida; S Uehara; Y Unno; S Uno; Y Ushiroda; Y Usov; S E Vahsen; G Varner; A Vinokurova; A Vossen; C H Wang; M-Z Wang; M Watanabe; Y Watanabe; J Wicht; K M Williams; E Won; B D Yabsley; Y Yamashita; D Zander; C C Zhang; Z P Zhang; V Zhilich; P Zhou; V Zhulanov; A Zupanc; Belle Collaboration

doi:10.1103/PhysRevLett.106.121802

Observation of B(s)⁰→J/ψf₀(980) and evidence for B(s)⁰→J/ψf₀(1370)

Phys Rev Lett. 2011 Mar 25;106(12):121802. doi: 10.1103/PhysRevLett.106.121802. Epub 2011 Mar 23.

Authors

J Li¹, H Aihara, K Arinstein, V Aulchenko, T Aushev, T Aziz, A M Bakich, V Balagura, E Barberio, K Belous, V Bhardwaj, B Bhuyan, A Bozek, M Bračko, O Brovchenko, T E Browder, P Chang, A Chen, P Chen, B G Cheon, C-C Chiang, R Chistov, I-S Cho, K Cho, S-K Choi, Y Choi, J Dalseno, Z Doležal, A Drutskoy, S Eidelman, S Esen, M Feindt, V Gaur, N Gabyshev, A Garmash, B Golob, H Ha, J Haba, T Hara, H Hayashii, Y Horii, Y Hoshi, W-S Hou, Y B Hsiung, H J Hyun, T Iijima, A Ishikawa, R Itoh, Y Iwasaki, T Iwashita, T Julius, J H Kang, P Kapusta, N Katayama, T Kawasaki, H Kichimi, C Kiesling, H J Kim, H O Kim, M J Kim, S K Kim, Y J Kim, K Kinoshita, B R Ko, N Kobayashi, S Korpar, P Križan, T Kuhr, R Kumar, T Kumita, A Kuzmin, Y-J Kwon, J S Lange, M J Lee, S-H Lee, C-L Lim, C Liu, D Liventsev, R Louvot, J MacNaughton, A Matyja, S McOnie, K Miyabayashi, H Miyata, Y Miyazaki, G B Mohanty, A Moll, E Nakano, M Nakao, H Nakazawa, Z Natkaniec, S Neubauer, S Nishida, K Nishimura, O Nitoh, T Nozaki, T Ohshima, S Okuno, S L Olsen, P Pakhlov, G Pakhlova, C W Park, H Park, H K Park, R Pestotnik, M Petrič, L E Piilonen, A Poluektov, M Prim, K Prothmann, M Röhrken, M Rozanska, S Ryu, H Sahoo, Y Sakai, O Schneider, C Schwanda, A J Schwartz, R Seidl, K Senyo, M E Sevior, M Shapkin, V Shebalin, C P Shen, J-G Shiu, B Shwartz, F Simon, J B Singh, P Smerkol, Y-S Sohn, A Sokolov, E Solovieva, S Stanič, M Starič, J Stypula, M Sumihama, T Sumiyoshi, S Suzuki, S Tanaka, Y Teramoto, K Trabelsi, M Uchida, S Uehara, Y Unno, S Uno, Y Ushiroda, Y Usov, S E Vahsen, G Varner, A Vinokurova, A Vossen, C H Wang, M-Z Wang, M Watanabe, Y Watanabe, J Wicht, K M Williams, E Won, B D Yabsley, Y Yamashita, D Zander, C C Zhang, Z P Zhang, V Zhilich, P Zhou, V Zhulanov, A Zupanc; Belle Collaboration

Affiliation

¹ Seoul National University, Seoul.

PMID: 21517300
DOI: 10.1103/PhysRevLett.106.121802

Abstract

We report the observation of B(s)⁰→J/ψf₀(980) and evidence for B(s)⁰→J/ψf₀(1370), which are CP eigenstate decay modes. These results are obtained from 121.4 fb⁻¹ of data collected at the Υ(5S) resonance with the Belle detector at the KEKB e(+)e⁻ collider. We measure the branching fractions B(B(s)⁰→J/ψf₀(980); f₀(980)→π(+)π⁻)=(1.16(-0.19)(+0.31)(stat)(-0.17)(+0.15)(syst)(-0.18)(+0.26)(N(B(s)((*))B(s)((*)))))×10⁻⁴ with a significance of 8.4σ, and B(B(s)⁰→J/ψf₀(1370); f₀(1370)→π(+)π⁻)=(0.34(-0.14)(+0.11)(stat)(-0.02)(+0.03)(syst)(-0.05)(+0.08)(N(B(s)((*))B(s)((*)))))×10⁻⁴ with a significance of 4.2σ. The last error listed is due to uncertainty in the number of produced B(s)((*))B(s)((*)) pairs.