Observation of B±→ψ(2S)π± and search for direct CP violation

Bhardwaj, V.; Kumar, R.; Singh, J.B.; Adachi, I.; Aihara, H.; Arinstein, K.; Aushev, T.; Aziz, T.; Bahinipati, S.; Bakich, A.M.; Balagura, V.; Barberio, E.; Bay, A.; Belous, K.; Bitenc, U.; Bondar, A.; Bozek, A.; Bračko, M.; Brodzicka, J.; Browder, T.E.; Chang, M.-C.; Chang, P.; Chen, A.; Cheon, B.G.; Chistov, R.; Cho, I.-S.; Choi, S.-K.; Choi, Y.; Dalseno, J.; Dash, M.; Drutskoy, A.; Eidelman, S.; Goldenzweig, P.; Golob, B.; Ha, H.; Hara, T.; Hayasaka, K.; Hayashii, H.; Hazumi, M.; Hoshi, Y.; Hou, W.-S.; Hsiung, Y.B.; Hyun, H.J.; Iijima, T.; Inami, K.; Ishikawa, A.; Ishino, H.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Joshi, N.J.; Kah, D.H.; Kang, J.H.; Katayama, N.; Kawai, H.; Kawasaki, T.; Kichimi, H.; Kim, H.O.; Kim, S.K.; Kim, Y.I.; Kim, Y.J.; Kinoshita, K.; Korpar, S.; Križan, P.; Krokovny, P.; Kuzmin, A.; Kwon, Y.-J.; Kyeong, S.-H.; Lange, J.S.; Lee, J.S.; Lin, S.-W.; Liu, C.; Liu, Y.; Liventsev, D.; Mandl, F.; Matyja, A.; McOnie, S.; Medvedeva, T.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Moloney, G.R.; Nagasaka, Y.; Nakao, M.; Natkaniec, Z.; Nishida, S.; Nitoh, O.; Ogawa, S.; Ohshima, T.; Okuno, S.; Olsen, S.L.; Ozaki, H.; Pakhlov, P.; Pakhlova, G.; Park, C.W.; Park, H.; Park, H.K.; Peak, L.S.; Pestotnik, R.; Piilonen, L.E.; Sahoo, H.; Sakai, Y.; Schneider, O.; Schümann, J.; Schwanda, C.; Schwartz, A.J.; Senyo, K.; Sevior, M.E.; Shapkin, M.; Shen, C.P.; Shiu, J.-G.; Shwartz, B.; Somov, A.; Stanič, S.; Starič, M.; Sumiyoshi, T.; Suzuki, S.; Tamura, N.; Tanaka, M.; Taylor, G.N.; Teramoto, Y.; Trabelsi, K.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Varner, G.; Varvell, K.E.; Vervink, K.; Wang, C.C.; Wang, C.H.; Wang, M.-Z.; Wang, P.; Wang, X.L.; Watanabe, Y.; Won, E.; Yamashita, Y.; Yamauchi, M.; Zhang, C.C.; Zhulanov, V.; Zivko, T.; Zupanc, A.; Zyukova, O.

doi:10.1103/PhysRevD.78.051104

Observation of B±→ψ(2S)π± and search for direct CP violation

Bhardwaj, V. ; Kumar, R. ; Singh, J.B. ; Adachi, I.[...]

We report the first observation of B±→ψ(2S)π±, a Cabibbo- and color-suppressed decay. This analysis is based on 657×106 BB̄ events collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. The measured branching fraction is (2.44±0.22±0.20)×10-5 and the charge asymmetry is A=0.022±0.085±0.016. The ratio of the branching fractions B(B±→ψ(2S)π±)/B(B±→ψ(2S)K±)=(3. 99±0.36±0.17)% is also determined. © 2008 The American Physical Society.

Published in:

Physical Review D - Particles, Fields, Gravitation and Cosmology, 78, 5, 051104

Year:

2008

DOI:

10.1103/PhysRevD.78.051104

Other identifiers:

Scopus: 2-s2.0-53349099566
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Laboratories:

LPHE

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Scientific production and competences > SB - School of Basic Sciences > IPHYS - Institute of Physics > LPHE - High Energy Physics Laboratory
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