Branching ratios, forward-backward asymmetries, and angular distributions of B → K*2l+l- in the standard model and two new physics scenarios

被引：40

作者：

Li, Run-Hui ^{[1
,2
,3
]}

Lue, Cai-Dian ^{[1
]}

Wang, Wei ^{[4
]}

机构：

[1] Inst High Energy Phys, Beijing 100049, Peoples R China

[2] Yonsei Univ, Dept Phys, Seoul 120479, South Korea

[3] Yonsei Univ, IPAP, Seoul 120479, South Korea

[4] Deutsch Elektronen Synchrotron DESY, D-22607 Hamburg, Germany

来源：

PHYSICAL REVIEW D | 2011年 / 83卷 / 03期

基金：

中国国家自然科学基金;

关键词：

CHANGING NEUTRAL CURRENTS; DECAYS; FERMIONS;

D O I：

10.1103/PhysRevD.83.034034

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We analyze the B -> K*(2)(-> K pi)l(+)l(-) ( with l = e, mu, tau) decay in the standard model and two new physics scenarios: the vectorlike quark model and family nonuniversal Z' models. We derive the differential angular distributions using the recently calculated form factors in the perturbative QCD approach. Branching ratios, polarizations, forward-backward asymmetries, and transversity amplitudes are predicted, from which we find a promising prospective to observe this channel in future experiments. We update the constraints on effective Wilson coefficients and/or free parameters in these two new physics scenarios by making use of the B -> K*l(+)l(-) and b -> sl(+)l(-) experimental data. Their impact on B -> K*(2)l(+)l(-) is subsequently explored and, in particular, the zero-crossing point for the forward-backward asymmetry in these new physics scenarios can sizably deviate from the standard model. In addition we also generalize the analysis to a similar mode, B-s -> f'(2)(1525)(-> K+K-)l(+)l(-).

引用

页数：18

共 59 条

[1] Search for the rare decays B+ → μ+μ-K+, B0 → μ+μ- K*(892)0, and Bs0 → μ+μ-φ at CDF [J].

Aaltonen, T. ;

Adelman, J. ;

Akimoto, T. ;

Albrow, M. G. ;

Alvarez Gonzalez, B. ;

Amerio, S. ;

Amidei, D. ;

Anastassov, A. ;

Annovi, A. ;

Antos, J. ;

Apollinari, G. ;

Apresyan, A. ;

Arisawa, T. ;

Artikov, A. ;

Ashmanskas, W. ;

Attal, A. ;

Aurisano, A. ;

Azfar, F. ;

Azzurri, P. ;

Badgett, W. ;

Barbaro-Galtieri, A. ;

Barnes, V. E. ;

Barnett, B. A. ;

Bartsch, V. ;

Bauer, G. ;

Beauchemin, P.-H. ;

Bedeschi, F. ;

Bednar, P. ;

Beecher, D. ;

Behari, S. ;

Bellettini, G. ;

Bellinger, J. ;

Benjamin, D. ;

Beretvas, A. ;

Beringer, J. ;

Bhatti, A. ;

Binkley, M. ;

Bisello, D. ;

Bizjak, I. ;

Blair, R. E. ;

Blocker, C. ;

Blumenfeld, B. ;

Bocci, A. ;

Bodek, A. ;

Boisvert, V. ;

Bolla, G. ;

Bortoletto, D. ;

Boudreau, J. ;

Boveia, A. ;

Brau, B. .

PHYSICAL REVIEW D, 2009, 79 (01)

[2] Search for the rare decay Bs0 → μ+μ- [J].

Abazov, V. M. ;

Abbott, B. ;

Abolins, M. ;

Acharya, B. S. ;

Adams, M. ;

Adams, T. ;

Alexeev, G. D. ;

Alkhazov, G. ;

Alton, A. ;

Alverson, G. ;

Alves, G. A. ;

Ancu, L. S. ;

Aoki, M. ;

Arnoud, Y. ;

Arov, M. ;

Askew, A. ;

Asman, B. ;

Atramentov, O. ;

Avila, C. ;

BackusMayes, J. ;

Badaud, F. ;

Bagby, L. ;

Baldin, B. ;

Bandurin, D. V. ;

Banerjee, S. ;

Barberis, E. ;

Barfuss, A. -F. ;

Baringer, P. ;

Barreto, J. ;

Bartlett, J. F. ;

Bassler, U. ;

Beale, S. ;

Bean, A. ;

Begalli, M. ;

Begel, M. ;

Belanger-Champagne, C. ;

Bellantoni, L. ;

Benitez, J. A. ;

Beria, S. B. ;

Bernardi, G. ;

Bernhard, R. ;

Bertram, I. ;

Besancon, M. ;

Beuselinck, R. ;

Bezzubov, V. A. ;

Bhat, P. C. ;

Bhatnagar, V. ;

Blazey, G. ;

Blessing, S. ;

Bloom, K. .

PHYSICS LETTERS B, 2010, 693 (05) :539-544

[3]

Ali A, 2000, PHYS REV D, V61, DOI 10.1103/PhysRevD.61.074024

[4] B → K* l+ l- decay in soft-collinear effective theory [J].

Ali, A. ;

Kramer, G. ;

Zhu, G. .

EUROPEAN PHYSICAL JOURNAL C, 2006, 47 (03) :625-641

[5] FORWARD BACKWARD ASYMMETRY OF DILEPTON ANGULAR-DISTRIBUTION IN THE DECAY B-]SL+L- [J].

ALI, A ;

MANNEL, T ;

MOROZUMI, T .

PHYSICS LETTERS B, 1991, 273 (04) :505-512

[6]

Alok A. K., ARXIV10082367

[7] New-physics contributions to the forward-backward asymmetry in B → K* μ+ μ- [J].

Alok, Ashutosh Kumar ;

Dighe, Amol ;

Ghosh, Diptimoy ;

London, David ;

Matias, Joaquim ;

Nagashima, Makiko ;

Szynkman, Alejandro .

JOURNAL OF HIGH ENERGY PHYSICS, 2010, (02)

[8] Symmetries and asymmetries of B → K*μ+μ- decays in the Standard Model and beyond [J].

Altmannshofer, Wolfgang ;

Ball, Patricia ;

Bharucha, Aoife ;

Buras, Andrzej J. ;

Straub, David M. ;

Wick, Michael .

JOURNAL OF HIGH ENERGY PHYSICS, 2009, (01)

[9]

[Anonymous], ARXIV09124179 LHCB C

[10] Measurement of the e+e- → b(b)over-bar Cross Section between √s=10.54 and 11.20 GeV [J].

Aubert, B. ;

Bona, M. ;

Karyotakis, Y. ;

Lees, J. P. ;

Poireau, V. ;

Prencipe, E. ;

Prudent, X. ;

Tisserand, V. ;

Garra Tico, J. ;

Grauges, E. ;

Lopez, L. ;

Palano, A. ;

Pappagallo, M. ;

Eigen, G. ;

Stugu, B. ;

Sun, L. ;

Abrams, G. S. ;

Battaglia, M. ;

Brown, D. N. ;

Cahn, R. N. ;

Jacobsen, R. G. ;

Kerth, L. T. ;

Kolomensky, Yu. G. ;

Lynch, G. ;

Osipenkov, I. L. ;

Ronan, M. T. ;

Tackmann, K. ;

Tanabe, T. ;

Hawkes, C. M. ;

Soni, N. ;

Watson, A. T. ;

Koch, H. ;

Schroeder, T. ;

Walker, D. ;

Asgeirsson, D. J. ;

Fulsom, B. G. ;

Hearty, C. ;

Mattison, T. S. ;

McKenna, J. A. ;

Barrett, M. ;

Khan, 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. .

PHYSICAL REVIEW LETTERS, 2009, 102 (01)

← 1 2 3 4 5 6 →