Abstract
We present a measurement of the branching fractions and charge-parity-(CP-)violating parameters in B→ωK decays. The results are obtained from the final data sample containing 772×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the branching fractions B(B0→ωK0)=(4.5±0.4(stat)±0.3(syst))×10-6, B(B+→ωK+)=(6.8±0.4(stat)±0.4(syst))×10-6 which are in agreement with their respective current world averages. For the CP-violating parameters, we obtain AωKS0=-0.36±0.19(stat)±0. 05(syst),SωKS0=+0.91±0.32(stat)±0.05(syst),AωK+=-0. 03±0.04(stat)±0.01(syst), where A and S represent the direct and mixing-induced CP asymmetry, respectively. We find no evidence of CP violation in the decay channel B+→ωK+; however, we obtain the first evidence of CP violation in the B0→ωKS0 decay channel at the level of 3.1 standard deviations.
Original language | English |
---|---|
Article number | 012002 |
Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Volume | 90 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2014 Jul 9 |
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)
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Measurement of branching fractions and CP violation parameters in B →ωK decays with first evidence of CP violation in B0 →ω Ks0. / Chobanova, V.; Dalseno, J.; Kiesling, C.; Adachi, I.; Aihara, H.; Asner, D. M.; Aulchenko, V.; Aushev, T.; Aziz, T.; Bakich, A. M.; Bala, A.; Ban, Y.; Belous, K.; Bhuyan, B.; Bobrov, A.; Bonvicini, G.; Bozek, A.; Bračko, M.; Browder, T. E.; Červenkov, D.; Chekelian, V.; Chen, A.; Cheon, B. G.; Chilikin, K.; Chistov, R.; Cho, K.; Choi, Y.; Cinabro, D.; Danilov, M.; DoleŽal, Z.; Drásal, Z.; Dutta, D.; Dutta, K.; Eidelman, S.; Esen, S.; Farhat, H.; Fast, J. E.; Ferber, T.; Gaur, V.; Gabyshev, N.; Ganguly, S.; Garmash, A.; Gillard, R.; Goh, Y. M.; Golob, B.; Haba, J.; Hayasaka, K.; He, X. H.; Horii, Y.; Hoshi, Y.; Hou, W. S.; Hsiung, Y. B.; Hyun, H. J.; Iijima, T.; Inami, K.; Ishikawa, A.; Iwasaki, Y.; Iwashita, T.; Jaegle, I.; Julius, T.; Kang, J. H.; Kato, E.; Kawai, H.; Kawasaki, T.; Kim, D. Y.; Kim, H. J.; Kim, J. B.; Kim, J. H.; Kim, M. J.; Kim, Y. J.; Kinoshita, K.; Klucar, J.; Ko, B. R.; Kodyš, P.; Korpar, S.; Krokovny, P.; Kronenbitter, B.; Kuhr, T.; Kumita, T.; Kuzmin, A.; Lange, J. S.; Lee, S. H.; Li, J.; Li, Y.; Li Gioi, L.; Libby, J.; Liventsev, D.; Lukin, P.; Matvienko, D.; Miyabayashi, K.; Miyake, H.; Miyata, H.; Mizuk, R.; Mohanty, G. B.; Moll, A.; Muramatsu, N.; Mussa, R.; Nakano, E.; Nakao, M.; Natkaniec, Z.; Nayak, M.; Nedelkovska, E.; Ng, C.; Nisar, N. K.; Nishida, S.; Nitoh, O.; Ogawa, S.; Okuno, S.; Pakhlov, P.; Pakhlova, G.; Park, C. W.; Park, H.; Park, H. K.; Pedlar, T. K.; Peng, T.; Pestotnik, R.; Petrič, M.; Piilonen, L. E.; Ritter, M.; Röhrken, M.; Rostomyan, A.; Sahoo, H.; Saito, T.; Sakai, Y.; Santelj, L.; Sanuki, T.; Savinov, V.; Schneider, O.; Schwartz, A. J.; Semmler, D.; Senyo, K.; Seon, O.; Sevior, M. E.; Shapkin, M.; Shibata, T. A.; Shiu, J. G.; Shwartz, B.; Sibidanov, A.; Simon, F.; Sohn, Y. S.; Stanič, S.; Starič, M.; Steder, M.; Sumisawa, K.; Sumiyoshi, T.; Tamponi, U.; Tatishvili, G.; Teramoto, Y.; Trabelsi, K.; Uchida, M.; Uglov, T.; Unno, Y.; Uno, S.; Van Hulse, C.; Vanhoefer, P.; Varner, G.; Varvell, K. E.; Vinokurova, A.; Vorobyev, V.; Wagner, M. N.; Wang, C. H.; Wang, M. Z.; Wang, P.; Watanabe, M.; Watanabe, Y.; Williams, K. M.; Won, E.; Yamamoto, H.; Yamashita, Y.; Yashchenko, S.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.; Zupanc, A.
In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 90, No. 1, 012002, 09.07.2014.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Measurement of branching fractions and CP violation parameters in B →ωK decays with first evidence of CP violation in B0 →ω Ks0
AU - Chobanova, V.
AU - Dalseno, J.
AU - Kiesling, C.
AU - Adachi, I.
AU - Aihara, H.
AU - Asner, D. M.
AU - Aulchenko, V.
AU - Aushev, T.
AU - Aziz, T.
AU - Bakich, A. M.
AU - Bala, A.
AU - Ban, Y.
AU - Belous, K.
AU - Bhuyan, B.
AU - Bobrov, A.
AU - Bonvicini, G.
AU - Bozek, A.
AU - Bračko, M.
AU - Browder, T. E.
AU - Červenkov, D.
AU - Chekelian, V.
AU - Chen, A.
AU - Cheon, B. G.
AU - Chilikin, K.
AU - Chistov, R.
AU - Cho, K.
AU - Choi, Y.
AU - Cinabro, D.
AU - Danilov, M.
AU - DoleŽal, Z.
AU - Drásal, Z.
AU - Dutta, D.
AU - Dutta, K.
AU - Eidelman, S.
AU - Esen, S.
AU - Farhat, H.
AU - Fast, J. E.
AU - Ferber, T.
AU - Gaur, V.
AU - Gabyshev, N.
AU - Ganguly, S.
AU - Garmash, A.
AU - Gillard, R.
AU - Goh, Y. M.
AU - Golob, B.
AU - Haba, J.
AU - Hayasaka, K.
AU - He, X. H.
AU - Horii, Y.
AU - Hoshi, Y.
AU - Hou, W. S.
AU - Hsiung, Y. B.
AU - Hyun, H. J.
AU - Iijima, T.
AU - Inami, K.
AU - Ishikawa, A.
AU - Iwasaki, Y.
AU - Iwashita, T.
AU - Jaegle, I.
AU - Julius, T.
AU - Kang, J. H.
AU - Kato, E.
AU - Kawai, H.
AU - Kawasaki, T.
AU - Kim, D. Y.
AU - Kim, H. J.
AU - Kim, J. B.
AU - Kim, J. H.
AU - Kim, M. J.
AU - Kim, Y. J.
AU - Kinoshita, K.
AU - Klucar, J.
AU - Ko, B. R.
AU - Kodyš, P.
AU - Korpar, S.
AU - Krokovny, P.
AU - Kronenbitter, B.
AU - Kuhr, T.
AU - Kumita, T.
AU - Kuzmin, A.
AU - Lange, J. S.
AU - Lee, S. H.
AU - Li, J.
AU - Li, Y.
AU - Li Gioi, L.
AU - Libby, J.
AU - Liventsev, D.
AU - Lukin, P.
AU - Matvienko, D.
AU - Miyabayashi, K.
AU - Miyake, H.
AU - Miyata, H.
AU - Mizuk, R.
AU - Mohanty, G. B.
AU - Moll, A.
AU - Muramatsu, N.
AU - Mussa, R.
AU - Nakano, E.
AU - Nakao, M.
AU - Natkaniec, Z.
AU - Nayak, M.
AU - Nedelkovska, E.
AU - Ng, C.
AU - Nisar, N. K.
AU - Nishida, S.
AU - Nitoh, O.
AU - Ogawa, S.
AU - Okuno, S.
AU - Pakhlov, P.
AU - Pakhlova, G.
AU - Park, C. W.
AU - Park, H.
AU - Park, H. K.
AU - Pedlar, T. K.
AU - Peng, T.
AU - Pestotnik, R.
AU - Petrič, M.
AU - Piilonen, L. E.
AU - Ritter, M.
AU - Röhrken, M.
AU - Rostomyan, A.
AU - Sahoo, H.
AU - Saito, T.
AU - Sakai, Y.
AU - Santelj, L.
AU - Sanuki, T.
AU - Savinov, V.
AU - Schneider, O.
AU - Schwartz, A. J.
AU - Semmler, D.
AU - Senyo, K.
AU - Seon, O.
AU - Sevior, M. E.
AU - Shapkin, M.
AU - Shibata, T. A.
AU - Shiu, J. G.
AU - Shwartz, B.
AU - Sibidanov, A.
AU - Simon, F.
AU - Sohn, Y. S.
AU - Stanič, S.
AU - Starič, M.
AU - Steder, M.
AU - Sumisawa, K.
AU - Sumiyoshi, T.
AU - Tamponi, U.
AU - Tatishvili, G.
AU - Teramoto, Y.
AU - Trabelsi, K.
AU - Uchida, M.
AU - Uglov, T.
AU - Unno, Y.
AU - Uno, S.
AU - Van Hulse, C.
AU - Vanhoefer, P.
AU - Varner, G.
AU - Varvell, K. E.
AU - Vinokurova, A.
AU - Vorobyev, V.
AU - Wagner, M. N.
AU - Wang, C. H.
AU - Wang, M. Z.
AU - Wang, P.
AU - Watanabe, M.
AU - Watanabe, Y.
AU - Williams, K. M.
AU - Won, E.
AU - Yamamoto, H.
AU - Yamashita, Y.
AU - Yashchenko, S.
AU - Zhang, Z. P.
AU - Zhilich, V.
AU - Zhulanov, V.
AU - Zupanc, A.
N1 - Copyright: Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014/7/9
Y1 - 2014/7/9
N2 - We present a measurement of the branching fractions and charge-parity-(CP-)violating parameters in B→ωK decays. The results are obtained from the final data sample containing 772×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the branching fractions B(B0→ωK0)=(4.5±0.4(stat)±0.3(syst))×10-6, B(B+→ωK+)=(6.8±0.4(stat)±0.4(syst))×10-6 which are in agreement with their respective current world averages. For the CP-violating parameters, we obtain AωKS0=-0.36±0.19(stat)±0. 05(syst),SωKS0=+0.91±0.32(stat)±0.05(syst),AωK+=-0. 03±0.04(stat)±0.01(syst), where A and S represent the direct and mixing-induced CP asymmetry, respectively. We find no evidence of CP violation in the decay channel B+→ωK+; however, we obtain the first evidence of CP violation in the B0→ωKS0 decay channel at the level of 3.1 standard deviations.
AB - We present a measurement of the branching fractions and charge-parity-(CP-)violating parameters in B→ωK decays. The results are obtained from the final data sample containing 772×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the branching fractions B(B0→ωK0)=(4.5±0.4(stat)±0.3(syst))×10-6, B(B+→ωK+)=(6.8±0.4(stat)±0.4(syst))×10-6 which are in agreement with their respective current world averages. For the CP-violating parameters, we obtain AωKS0=-0.36±0.19(stat)±0. 05(syst),SωKS0=+0.91±0.32(stat)±0.05(syst),AωK+=-0. 03±0.04(stat)±0.01(syst), where A and S represent the direct and mixing-induced CP asymmetry, respectively. We find no evidence of CP violation in the decay channel B+→ωK+; however, we obtain the first evidence of CP violation in the B0→ωKS0 decay channel at the level of 3.1 standard deviations.
UR - http://www.scopus.com/inward/record.url?scp=84904293490&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84904293490&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.90.012002
DO - 10.1103/PhysRevD.90.012002
M3 - Article
AN - SCOPUS:84904293490
VL - 90
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
SN - 1550-7998
IS - 1
M1 - 012002
ER -