Measurement of branching fractions and CP violation parameters in B → ωK decays with first evidence of CP violation in B0 → ωK0s

被引：15

作者：

Chobanova, V. ^{[28
]}

Dalseno, J. ^{[28
,54
]}

Kiesling, C. ^{[28
]}

Adachi, I. ^{[11
]}

Aihara, H. ^{[58
]}

Asner, D. M. ^{[43
]}

Aulchenko, V. ^{[2
,3
]}

Aushev, T. ^{[17
]}

Aziz, T. ^{[53
]}

Bakich, A. M. ^{[52
]}

Bala, A. ^{[44
]}

Ban, Y. ^{[45
]}

Belous, K. ^{[15
]}

Bhuyan, B. ^{[12
]}

Bobrov, A. ^{[2
,3
]}

Bonvicini, G. ^{[64
]}

Bozek, A. ^{[38
]}

Bracko, M. ^{[18
,27
]}

Browder, T. E. ^{[10
]}

Cervenkov, D. ^{[4
]}

Chekelian, V. ^{[28
]}

Chen, A. ^{[35
]}

Cheon, B. G. ^{[9
]}

Chilikin, K. ^{[17
]}

Chistov, R. ^{[17
]}

Cho, K. ^{[21
]}

Choi, Y. ^{[51
]}

Cinabro, D. ^{[64
]}

Danilov, M. ^{[17
,30
]}

Dolezal, Z. ^{[4
]}

Drasal, Z. ^{[4
]}

Dutta, D. ^{[12
]}

Dutta, K. ^{[12
]}

Eidelman, S. ^{[2
,3
]}

Esen, S. ^{[6
]}

Farhat, H. ^{[64
]}

Fast, J. E. ^{[43
]}

Ferber, T. ^{[7
]}

Gaur, V. ^{[53
]}

Gabyshev, N. ^{[2
,3
]}

Ganguly, S. ^{[64
]}

Garmash, A. ^{[2
,3
]}

Gillard, R. ^{[64
]}

Goh, Y. M. ^{[9
]}

Golob, B. ^{[18
,25
]}

Haba, J. ^{[11
]}

Hayasaka, K. ^{[33
]}

He, X. H. ^{[45
]}

Horii, Y. ^{[33
]}

Hoshi, Y. ^{[56
]}

机构：

[1] Univ Basque Country, UPV EHU, Bilbao 48080, Spain

[2] SB RAS, Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[3] Novosibirsk State Univ, Novosibirsk 630090, Russia

[4] Charles Univ Prague, Fac Math & Phys, CR-12116 Prague, Czech Republic

[5] Chiba Univ, Chiba 2638522, Japan

[6] Univ Cincinnati, Cincinnati, OH 45221 USA

[7] Deutsches Elektronen Synchrotron, D-22607 Hamburg, Germany

[8] Univ Giessen, D-35392 Giessen, Germany

[9] Hanyang Univ, Seoul 133791, South Korea

[10] Univ Hawaii, Honolulu, HI 96822 USA

[11] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan

[12] Indian Inst Technol Guwahati, Gauhati 781039, Assam, India

[13] Indian Inst Technol, Madras 600036, Tamil Nadu, India

[14] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

[15] Inst High Energy Phys, Protvino 142281, Russia

[16] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy

[17] Inst Theoret & Expt Phys, Moscow 117218, Russia

[18] J Stefan Inst, Ljubljana 1000, Slovenia

[19] Kanagawa Univ, Yokohama, Kanagawa 2218686, Japan

[20] Karlsruher Inst Technol, Inst Expt Kernphys, D-76131 Karlsruhe, Germany

[21] Korea Inst Sci & Technol Informat, Taejon 305806, South Korea

[22] Korea Univ, Seoul 136713, South Korea

[23] Kyungpook Natl Univ, Taegu 702701, South Korea

[24] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland

[25] Univ Ljubljana, Fac Math & Phys, Ljubljana 1000, Slovenia

[26] Luther Coll, Decorah, IA 52101 USA

[27] Univ Maribor, SLO-2000 Maribor, Slovenia

[28] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[29] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia

[30] Moscow Engn Phys Inst, Moscow 115409, Russia

[31] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Region, Russia

[32] Nagoya Univ, Grad Sch Sci, Nagoya, Aichi 4648602, Japan

[33] Nagoya Univ, Kobayashi Maskawa Inst, Nagoya, Aichi 4648602, Japan

[34] Nara Womens Univ, Nara 6308506, Japan

[35] Natl Cent Univ, Chungli 32054, Taiwan

[36] Natl United Univ, Miaoli 36003, Taiwan

[37] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan

[38] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland

[39] Nippon Dent Univ, Niigata 9518580, Japan

[40] Niigata Univ, Niigata 9502181, Japan

[41] Univ Nova Gor, Nova Gorica 5000, Slovenia

[42] Osaka City Univ, Osaka 5588585, Japan

[43] Pacific NW Natl Lab, Richland, WA 99352 USA

[44] Panjab Univ, Chandigarh 160014, India

[45] Peking Univ, Beijing 100871, Peoples R China

[46] Univ Pittsburgh, Pittsburgh, PA 15260 USA

[47] Tohoku Univ, Res Ctr Elect Photon Sci, Sendai, Miyagi 9808578, Japan

[48] Univ Sci & Technol China, Hefei 230026, Peoples R China

[49] Seoul Natl Univ, Seoul 151742, South Korea

[50] Soongsil Univ, Seoul 156743, South Korea

来源：

PHYSICAL REVIEW D | 2014年 / 90卷 / 01期

基金：

中国国家自然科学基金; 新加坡国家研究基金会; 奥地利科学基金会;

关键词：

D O I：

10.1103/PhysRevD.90.012002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a measurement of the branching fractions and charge- parity-( CP-) violating parameters in B..K decays. The results are obtained from the final data sample containing 772 x 10(6) BB _ pairs collected at the.d4S_ resonance with the Belle detector at the KEKB asymmetric- energy e_e- collider. We obtain the branching fractions BdB0 0 _d4.5 0.4dstat_ 0.3dsyst_x10- 6; BdB_..K__ d6.80.4dstat_ 0.4dsyst__x10- 6 which are in agreement with their respective current world averages. For the CP- violating parameters, we obtain A.K0 S - 0.36 +/- 0.19dstat_ 0.05dsyst_; S.K0 S _0.91 0.32dstat_ 0.05dsyst_; A.K_ - 0.03 +/- 0.04dstat_ 0.01dsyst_; 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_..K_; however, we obtain the first evidence of CP violation in the B0..K0 S decay channel at the level of 3.1 standard deviations.

引用

页数：16

共 40 条

[1] The Belle detector [J].

Abashian, A ;

Abe, K ;

Abe, R ;

Abe, K ;

Adachi, I ;

Ahn, BS ;

Ahn, HS ;

Aihara, H ;

Akatsu, M ;

Akhmetshin, R ;

Alexander, JP ;

Alimonti, G ;

An, Q ;

Aoki, K ;

Asai, M ;

Asano, Y ;

Aso, T ;

Aulchenko, V ;

Bakich, AM ;

Banas, E ;

Behari, S ;

Behera, PK ;

Beiline, D ;

Bondar, A ;

Bozek, A ;

Browder, TE ;

Casey, BCK ;

Chang, P ;

Chang, YH ;

Chao, Y ;

Chen, HS ;

Chen, HF ;

Chen, YQ ;

Cheon, BG ;

Chidzik, S ;

Choi, S ;

Choi, Y ;

Dneprovsky, L ;

Doi, Y ;

Dong, LY ;

Dragic, J ;

Drutskoy, A ;

Eidelman, S ;

Enomoto, R ;

Everton, CW ;

Fang, F ;

Fujii, H ;

Fujimoto, K ;

Fujita, Y ;

Fukunaga, C .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2002, 479 (01) :117-232

[2] Observation of large CP violation in the neutral B meson system -: art. no. 091802 [J].

Abe, K ;

Abe, R ;

Adachi, I ;

Ahn, BS ;

Aihara, H ;

Akatsu, M ;

Alimonti, G ;

Asai, K ;

Asai, M ;

Asano, Y ;

Aso, T ;

Aulchenko, V ;

Aushev, T ;

Bakich, AM ;

Banas, E ;

Behari, S ;

Behara, PK ;

Beiline, D ;

Bondar, A ;

Bozek, A ;

Browder, TE ;

Casey, BCK ;

Chang, P ;

Chao, Y ;

Chen, KF ;

Cheon, BG ;

Chistov, R ;

Choi, SK ;

Choi, Y ;

Dong, LY ;

Dragic, J ;

Drutskoy, A ;

Eidelman, S ;

Eiges, V ;

Enari, Y ;

Enomoto, R ;

Everton, CW ;

Fang, F ;

Fujii, H ;

Fukunaga, C ;

Fukushima, M ;

Gabyshev, N ;

Garmash, A ;

Gershon, TJ ;

Gordon, A ;

Gotow, K ;

Guler, H ;

Guo, R ;

Haba, J .

PHYSICAL REVIEW LETTERS, 2001, 87 (09)

[3]

Abe T., 2013, PROG THEOR EXP PHYS, DOI DOI 10.1093/PTEP/PTZ030

[4] Precise Measurement of the CP Violation Parameter sin2φ1 in B0 → (c(c)over-bar)K0 Decays [J].

Adachi, I. ;

Aihara, H. ;

Asner, D. M. ;

Aulchenko, V. ;

Aushev, T. ;

Aziz, T. ;

Bakich, A. M. ;

Bay, A. ;

Bhardwaj, V. ;

Bhuyan, B. ;

Bischofberger, M. ;

Bondar, A. ;

Bozek, A. ;

Bracko, M. ;

Browder, T. E. ;

Chen, P. ;

Cheon, B. G. ;

Chilikin, K. ;

Chistov, R. ;

Cho, K. ;

Choi, S. -K. ;

Choi, Y. ;

Dalseno, J. ;

Danilov, M. ;

Dolezal, Z. ;

Drasal, Z. ;

Eidelman, S. ;

Epifanov, D. ;

Fast, J. E. ;

Gaur, V. ;

Gabyshev, N. ;

Garmash, A. ;

Goh, Y. M. ;

Golob, B. ;

Haba, J. ;

Hara, K. ;

Hara, T. ;

Hayasaka, K. ;

Hayashii, H. ;

Higuchi, T. ;

Horii, Y. ;

Hoshi, Y. ;

Hou, W. -S. ;

Hsiung, Y. B. ;

Hyun, H. J. ;

Iijima, T. ;

Ishikawa, A. ;

Itoh, R. ;

Iwabuchi, M. ;

Iwasaki, Y. .

PHYSICAL REVIEW LETTERS, 2012, 108 (17)

[5] B→η(′)(l-νl,l+l-,K,K*) decays in the quark-flavor mixing scheme [J].

Akeroyd, A. G. ;

Chen, Chuan-Hung ;

Geng, Chao-Qiang .

PHYSICAL REVIEW D, 2007, 75 (05)

[6] SEARCH FOR HADRONIC B-]U DECAYS [J].

ALBRECHT, H ;

GLASER, R ;

HARDER, G ;

KRUGER, A ;

NILSSON, AW ;

NIPPE, A ;

OEST, T ;

REIDENBACH, M ;

SCHAFER, M ;

SCHMIDTPARZEFALL, W ;

SCHRODER, H ;

SCHULZ, HD ;

SEFKOW, F ;

WURTH, R ;

APPUHN, RD ;

DRESCHER, A ;

HAST, C ;

HERRERA, G ;

KOLANOSKI, H ;

LANGE, A ;

LINDNER, A ;

MANKEL, R ;

SCHECK, H ;

SCHWEDA, G ;

SPAAN, B ;

WALTHER, A ;

WEGENER, D ;

PAULINI, M ;

REIM, K ;

VOLLAND, U ;

WEGENER, H ;

FUNK, W ;

STIEWE, J ;

WERNER, S ;

BALL, S ;

GABRIEL, JC ;

GEYER, C ;

HOLSCHER, A ;

HOFMANN, W ;

HOLZER, B ;

KHAN, S ;

SPENGLER, J ;

CHARLESWORTH, CEK ;

EDWARDS, KW ;

FRISKEN, WR ;

KAPITZA, H ;

KRIEGER, P ;

KUTSCHKE, R ;

MACFARLANE, DB ;

MCLEAN, KW .

PHYSICS LETTERS B, 1990, 241 (02) :278-282

[7]

Aubert B, 2001, Phys Rev Lett, V87, P091801, DOI [10.1103/PhysRevLett.87.151801, 10.1103/PhysRevLett.87.091801]

[8] Branching fraction and CP-violation charge asymmetry measurements for B-meson decays to ηK±, ηπ±, η′K, η′π±, ωK, and ωπ± [J].

Aubert, B. ;

Bona, M. ;

Boutigny, D. ;

Karyotakis, Y. ;

Lees, J. P. ;

Poireau, V. ;

Prudent, X. ;

Tisserand, V. ;

Zghiche, A. ;

Tico, J. Garra ;

Grauges, E. ;

Lopez, L. ;

Palano, A. ;

Eigen, G. ;

Stugu, B. ;

Sun, L. ;

Abrams, G. S. ;

Battaglia, M. ;

Brown, D. N. ;

Button-Shafer, J. ;

Cahn, R. N. ;

Groysman, Y. ;

Jacobsen, R. G. ;

Kadyk, J. A. ;

Kerth, L. T. ;

Kolomensky, Yu. G. ;

Kukartsev, G. ;

Pegna, D. Lopes ;

Lynch, G. ;

Mir, L. M. ;

Orimoto, T. J. ;

Ronan, M. T. ;

Tackmann, K. ;

Wenzel, W. A. ;

Sanchez, P. del Amo ;

Hawkes, C. M. ;

Watson, A. T. ;

Held, T. ;

Koch, H. ;

Lewandowski, B. ;

Pelizaeus, M. ;

Schroeder, T. ;

Steinke, M. ;

Walker, D. ;

Asgeirsson, D. J. ;

Cuhadar-Donszelmann, T. ;

Fulsom, B. G. ;

Hearty, C. ;

Mattison, T. S. ;

McKenna, J. A. .

PHYSICAL REVIEW D, 2007, 76 (03)

[9] Time-dependent amplitude analysis of B0→KS0π+π- [J].

Aubert, B. ;

Karyotakis, Y. ;

Lees, J. P. ;

Poireau, V. ;

Prencipe, E. ;

Prudent, X. ;

Tisserand, V. ;

Garra Tico, J. ;

Grauges, E. ;

Martinelli, M. ;

Palano, A. ;

Pappagallo, M. ;

Eigen, G. ;

Stugu, B. ;

Sun, L. ;

Battaglia, M. ;

Brown, D. N. ;

Kerth, L. T. ;

Kolomensky, Yu. G. ;

Lynch, G. ;

Osipenkov, I. L. ;

Tackmann, K. ;

Tanabe, T. ;

Hawkes, C. M. ;

Soni, N. ;

Watson, A. T. ;

Koch, H. ;

Schroeder, T. ;

Asgeirsson, D. J. ;

Fulsom, B. G. ;

Hearty, C. ;

Mattison, T. S. ;

McKenna, J. A. ;

Barrett, M. ;

Khan, A. ;

Randle-Conde, A. ;

Blinov, V. E. ;

Bukin, A. D. ;

Buzykaev, A. R. ;

Druzhinin, V. P. ;

Golubev, V. B. ;

Onuchin, A. P. ;

Serednyakov, S. I. ;

Skovpen, Yu. I. ;

Solodov, E. P. ;

Todyshev, K. Yu. ;

Bondioli, M. ;

Curry, S. ;

Eschrich, I. ;

Kirkby, D. .

PHYSICAL REVIEW D, 2009, 80 (11)

[10] Measurement of time-dependent CP asymmetry in B0→c(c)over barK(*)0 decays [J].

Aubert, B. ;

Karyotakis, Y. ;

Lees, J. P. ;

Poireau, V. ;

Prencipe, E. ;

Prudent, X. ;

Tisserand, V. ;

Tico, J. Garra ;

Grauges, E. ;

Lopez, L. ;

Palano, A. ;

Pappagallo, M. ;

Eigen, G. ;

Stugu, B. ;

Sun, L. ;

Battaglia, M. ;

Brown, D. N. ;

Kerth, L. T. ;

Kolomensky, Yu. G. ;

Lynch, G. ;

Osipenkov, I. L. ;

Tackmann, K. ;

Tanabe, T. ;

Hawkes, C. M. ;

Soni, N. ;

Watson, A. T. ;

Koch, H. ;

Schroeder, T. ;

Asgeirsson, D. J. ;

Fulsom, B. G. ;

Hearty, C. ;

Mattison, T. S. ;

McKenna, J. A. ;

Barrett, M. ;

Khan, A. ;

Randle-Conde, A. ;

Blinov, V. E. ;

Bukin, A. D. ;

Buzykaev, A. R. ;

Druzhinin, V. P. ;

Golubev, V. B. ;

Onuchin, A. P. ;

Serednyakov, S. I. ;

Skovpen, Yu. I. ;

Solodov, E. P. ;

Todyshev, K. Yu. ;

Bondioli, M. ;

Curry, S. ;

Eschrich, I. ;

Kirkby, D. .

PHYSICAL REVIEW D, 2009, 79 (07)

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