Asymmetries of the $B \to K^* \mu^+ \mu^-$ decay and the search of new physics beyond the standard model - INSPIRE

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Asymmetries of the $B \to K^* \mu^+ \mu^-$ decay and the search of new physics beyond the standard model

Hai-Bing Fu
(
- Guizhou Minzu U., Guiyang
)
,
Xing-Gang Wu
(
- Chongqing U.
)
,
Wei Cheng
(
- Chongqing U.
)
,
Tao Zhong
(
- Henan Normal U.
)
,
Zhan Sun
(
- Guizhou Minzu U., Guiyang
)

Jan 15, 2018

11 pages

Published in:

Phys.Rev.D 97 (2018) 5, 055037

Published: Mar 27, 2018

e-Print:

1801.04808 [hep-ph]

DOI:

10.1103/PhysRevD.97.055037

View in:

ADS Abstract Service

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Abstract: (APS)

In this paper, we compute the forward-backward asymmetry and the isospin asymmetry of the B→K*μ+μ- decay. The B→K* transition form factors (TFFs) are key components of the decay. To achieve a more accurate QCD prediction, we adopt a chiral correlator for calculating the QCD light cone sum rules for those TFFs with the purpose of suppressing the uncertain high-twist distribution amplitudes. Our predictions show that the asymmetries under the standard model and the minimal supersymmetric standard model with minimal flavor violation are close in shape for q2≥6 GeV2 and are consistent with the Belle, LHCb, and CDF data within errors. When q2<2 GeV2, their predictions behave quite differently. Thus, a careful study on the B→K*μ+μ- decay within the small q2 region could be helpful for searching new physics beyond the standard model. As a further application, we also apply the B→K* TFFs to the branching ratio and longitudinal polarization fraction of the B→K*νν¯ decay within different models.

Note:

11 pages, 6 figures, references updated and revised version to be published in Phys. Rev. D

13.25.Hw
11.55.Hx
12.60.Jv
new physics
B: semileptonic decay
B: form factor
form factor: transition
dimuon: final state
dimuon: angular distribution
angular distribution: asymmetry

References(50)

Figures(11)

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