Solution to the B→πK puzzle in a flavor-changing Z′ model

被引：141

作者：

Barger, V

Chiang, CW ^{[1
]}

Langacker, P

Lee, HS

机构：

[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[2] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

来源：

PHYSICS LETTERS B | 2004年 / 598卷 / 3-4期

基金：

美国能源部;

关键词：

D O I：

10.1016/j.physletb.2004.07.057

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recent experiments suggest that certain B --> piK branching ratios are inconsistent with the standard model expectations. We show that a flavor-changing Z' provides a solution to the problem. Electroweak penguin amplitudes are enhanced by the Z' boson for select parameters. We discuss implications for the Z' mass and its couplings to the standard model fermions. We also show that the solution is consistent with constraints from the CP asymmetries of the B --> phiK(S) decay. (C) 2004 Published by Elsevier B.V.

引用

页码：218 / 226

页数：9

共 49 条

[1] Measurement of time-dependent CP-violating asymmetries in B0→φKS0, K+K-KS0, and η′KS0 decays -: art. no. 261602 [J].

Abe, K ;

Abe, T ;

Adachi, I ;

Aihara, H ;

Akai, K ;

Akatsu, M ;

Asano, Y ;

Aso, T ;

Aushev, T ;

Bahinipati, S ;

Bakich, AM ;

Ban, Y ;

Banerjee, S ;

Bedny, I ;

Bizjak, I ;

Bondar, A ;

Bozek, A ;

Bracko, M ;

Brodzicka, J ;

Browder, TE ;

Chang, MC ;

Chang, P ;

Chao, Y ;

Chen, KF ;

Cheon, BG ;

Chistov, R ;

Choi, SK ;

Choi, Y ;

Choi, YK ;

Chuvikov, A ;

Danilov, M ;

Dong, LY ;

Eidelman, S ;

Eiges, V ;

Enari, Y ;

Flanagan, J ;

Fukunaga, C ;

Furukawa, K ;

Gabyshev, N ;

Garmash, A ;

Gershon, T ;

Golob, B ;

Guo, R ;

Haba, J ;

Hagner, C ;

Hara, K ;

Hara, T ;

Hastings, NC ;

Hayashii, H .

PHYSICAL REVIEW LETTERS, 2003, 91 (26)

[2]

ABE K, BELLEPREPRINT20041

[3] Observation of a significant excess of π0π0 events in B meson decays -: art. no. 241801 [J].

Aubert, B ;

Barate, R ;

Boutigny, D ;

Gaillard, JM ;

Hicheur, A ;

Karyotakis, Y ;

Lees, JP ;

Robbe, P ;

Tisserand, V ;

Zghiche, A ;

Palano, A ;

Pompili, A ;

Chen, JC ;

Qi, ND ;

Rong, G ;

Wang, P ;

Zhu, YS ;

Eigen, G ;

Ofte, I ;

Stugu, B ;

Abrams, GS ;

Borgland, AW ;

Breon, AB ;

Brown, DN ;

Button-Shafer, J ;

Cahn, RN ;

Charles, E ;

Day, CT ;

Gill, MS ;

Gritsan, AV ;

Groysman, Y ;

Jacobsen, RG ;

Kadel, RW ;

Kadyk, J ;

Kerth, LT ;

Kolomensky, YG ;

Kral, JF ;

Kukartsev, G ;

LeClerc, C ;

Levi, ME ;

Lynch, G ;

Mir, LM ;

Oddone, PJ ;

Orimoto, TJ ;

Pripstein, M ;

Roe, NA ;

Romosan, A ;

Ronan, MT ;

Shelkov, VG ;

Telnov, AV .

PHYSICAL REVIEW LETTERS, 2003, 91 (24) :241801/1-241801/7

[4]

AUBERT B, BABARPUB04005

[5]

AUBERT B, HEPEX0403026

[6] Implications of generalized Z-Z′ mixing [J].

Babu, KS ;

Kolda, C ;

March-Russell, J .

PHYSICAL REVIEW D, 1998, 57 (11) :6788-6792

[7] Leptophobic U(1)'s and the R(b)-R(c) anomalies [J].

Babu, KS ;

Kolda, C ;

MarchRussell, J .

PHYSICAL REVIEW D, 1996, 54 (07) :4635-4647

[8] QUARK SINGLETS - IMPLICATIONS AND CONSTRAINTS [J].

BARGER, V ;

BERGER, MS ;

PHILLIPS, RJN .

PHYSICAL REVIEW D, 1995, 52 (03) :1663-1683

[9] Z′ mediated flavor changing neutral currents in B meson decays [J].

Barger, V ;

Chiang, CW ;

Langacker, P ;

Lee, HS .

PHYSICS LETTERS B, 2004, 580 (3-4) :186-196

[10]

BARGER V, HEPPH0405108

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