Measurements of time-dependent CP asymmetries in $B \\to D^{*\\mp} \\pi^{\\pm}$ decays using a partial reconstruction technique
Journal
Physical Review
Journal Volume
D84
Pages
021101
Date Issued
2011-02
Author(s)
Trabelsi, K.
Kinoshita, K.
Arinstein, K.
Aulchenko, V.
Aushev, T.
Bakich, A.M.
Balagura, V.
Barberio, E.
Belous, K.
Bhardwaj, V.
Bhuyan, B.
Bischofberger, M.
Bondar, A.
Bozek, A.
Bra?ko, M.
Chen, A.
Chen, P.
Cheon, B.G.
Chiang, C.-C.
Cho, I.-S.
Cho, K.
Choid, Y.
Dalseno, J.
Dals?al, Z.
Dr?sal, Z.
Eidelman, S.
Gabyshev, N.
Golob, B.
Ha, H.
Horii, Y.
Hoshi, Y.
Hou, W.-S.
Hsiung, Y.B.
Hyun, H.J.
Ishikawa, A.
Iwabuchi, M.
Iwasaki, Y.
Iwashita, T.
Julius, T.
Kang, J.H.
Kiesling, C.
Kim, H.J.
Kim, M.J.
Ko, B.R.
Kobayashi, N.
Kody?, P.
Kri?an, P.
Kumita, T.
Kwon, Y.-J.
Kyeong, S.-H.
Lange, J.S.
Lee, M.J.
Lee, S.-H.
Li, J.
Liu, C.
Louvot, R.
Matyja, A.
Mconie, S.
Miyabayashi, K.
Miyata, H.
Miyazaki, Y.
Mohanty, G.B.
Nakao, M.
Natkaniec, Z.
Neubauer, S.
Nishida, S.
Nitoh, O.
Ogawa, S.
Ohshima, T.
Pakhlov, P.
Park, C.W.
Petri?, M.
Piilonen, L.E.
Poluektov, A.
R?hrken, M.
Sahoo, H.
Sakai, Y.
Schneider, O.
Schwanda, C.
Schwartz, A.J.
Sevior, M.E.
Shapkin, M.
Shen, C.P.
Shiu, J.-G.
Smerkol, P.
Sohn, Y.-S.
Sokolov, A.
Solovieva, E.
Stani?, S.
Stari?, M.
Sumisawa, K.
Sumiyoshi, T.
Tanaka, S.
Teramoto, Y.
Uchida, M.
Uehara, S.
Uglov, T.
Unno, Y.
Uno, S.
Varner, G.
Vinokurova, A.
Wang, C.H.
Won, E.
Yabsley, B.D.
Yamashita, Y.
Zhang, C.C.
Zhang, Z.P.
Zhou, P.
Zivko, T.
Abstract
We report results on time-dependent CP asymmetries in B→D *π± decays based on a data sample containing 657×106 BB̄ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider at the Υ(4S) resonance. We use a partial reconstruction technique, wherein signal B→D* π± events are identified using information only from the fast pion from the B decay and the slow pion from the subsequent decay of the D*, where the former (latter) corresponds to D*+(D*-) final states. We obtain CP violation parameters S+=+0.061±0. 018(stat)±0.012(syst) and S-=+0.031±0.019(stat) ±0.015(syst). © 2011 American Physical Society.
Type
journal article