Rates and asymmetries of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:mi>π</mml:mi><mml:msup><mml:mo>ℓ</mml:mo><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mo>ℓ</mml:mo><mml:mo>−</mml:mo></mml:msup></mml:math>decays

Hou, W.-S.; Kohda, Masaya; Xu, Fanrong

doi:10.1103/physrevd.90.013002

Cited by 40 publications

(39 citation statements)

References 75 publications

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“…The prediction for the decay branching fraction B ± → π ± μ + μ − is in good agreement with experimental data from [1] within the measurement errors. The theoretical calculations performed for the branching fractions in [20,21] and based on approaches different from that adopted here agree with our predictions within the quoted errors.…”

Section: Discussionsupporting

confidence: 80%

Model-independent analysis of B → πℓ + ℓ − decays

2015

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The results obtained by calculating, on the basis of the Standard Model, the branching fractions for the decays B → π + − ( ± = e ± , μ ± ) and the invariant-mass spectrum of dileptons for the process B + → π + + − are presented. The resulting theoretical estimates depend on the choice of model for the B → π transition form factors f + (q 2 ), f 0 (q 2 ), and f T (q 2 ). However, one can get rid of this arbitrariness by employing experimental data or the results of QCD lattice calculations to determine the parameter dependence of the form factors. Data from B-meson factories were used to determine the dependence of the form factor f + (q 2 ) on the transfer momentum squared. Yet another required form factor, f T (q 2 ), was extracted from available lattice data on B → π and B → K transitions with allowance for nearly identical effects of the breakdown of flavor SU (3) F symmetry in the respective form factors. The resulting value of the decay branching fraction, B(B + → π + μ + μ − ) = 1.88 +0.32 −0.21 × 10 −8 , is in good agreement with the results of measurements of the LHCb Collaboration. The branching fraction for the isospin analog of the decay under consideration is B(B 0 → π 0 μ + μ − ) = 0.94 +0.16 −0.11 × 10 −8 . Therefore, this decay can be measured at the Super-B factory under construction.

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Section: Discussionsupporting

confidence: 80%

Model-independent analysis of B → πℓ + ℓ − decays

2015

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“…The matrix elements corresponding to operators O 7,9,10 are expressed in terms of seven form factors which are functions of q 2 :…”

Section: Form Factorsmentioning

confidence: 99%

Predictions of angular observables for B¯s→Kℓℓ and
Kindra¹,
Mahajan²
2018
Phys. Rev. D*
13
2
28
0
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Exclusive semileptonic decays based on b → s transitions have attracted a lot of attention as some angular observables deviate significantly from the standard model (SM) predictions. B meson decays induced by other flavor changing neutral current (FCNC), b → d, can also offer a probe to new physics with an additional sensitivity to the weak phase in the Cabibbo-Kobayashi-Masakawa (CKM) matrix. We provide predictions for angular observables for b → d semileptonic transitions, namelyBs → K * + − ,B 0 → ρ 0 + − , and their CP-conjugated modes including various nonfactorizable corrections. ForB 0 → ρ 0 + − mode, B 0 −B 0 mixing effects have been included and predictions are made for Belle and LHCb separately. Study of these decay modes will be useful in its own right and to understand the pattern of deviations in b → s transitions.I.

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“…where V tb V * ts is the product of CKM matrix elements and C i 's are the Wilson coefficients evaluated at the renormalization scale µ = m b [36]. The corresponding effective operators are given as…”

Section: Introductionmentioning

confidence: 99%

Explaining the RK and RD(*
Sahoo
¹
,
Mohanta
²
,
Giri
³

2017
Phys. Rev. D
100
2
42
0
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Recently the B factories BaBar and Belle as well as the LHCb experiment have reported several anomalies in the semileptonic B meson decays such as R K and R D ( * ) etc. We investigate these deviations by considering the vector leptoquarks relevant for both b → sl + l − and b → clν l transitions. The leptoquark parameter space is constrained by using the experimentally measured branching ratios of B s → l + l − ,B → X s l + l − (νν) and B + u → l + ν l processes. Using the constrained leptoquark couplings, we compute the branching ratios, forward-backward asymmetries, τ and D * polarization parameters in theB → D ( * ) lν l processes. We find that the vector leptoquarks can explain both R D ( * ) and R K anomalies simultaneously. Furthermore, we study the rare leptonic B * u,c → lν decay processes in this model.

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Rates and asymmetries ofB→πℓ+ℓ−decays

Cited by 40 publications

References 75 publications

Model-independent analysis of B → πℓ + ℓ − decays

Model-independent analysis of B → πℓ + ℓ − decays

Predictions of angular observables for B¯s→Kℓℓ and
Kindra¹,
Mahajan²
2018
Phys. Rev. D*
13
2
28
0
View full text Add to dashboard Cite

Explaining the RK and RD(*
Sahoo
¹
,
Mohanta
²
,
Giri
³

2017
Phys. Rev. D
100
2
42
0
View full text Add to dashboard Cite

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Rates and asymmetries ofB→πℓ+ℓ−decays

Cited by 40 publications

References 75 publications

Model-independent analysis of B → πℓ + ℓ − decays

Model-independent analysis of B → πℓ + ℓ − decays

Predictions of angular observables for B¯s→K*ℓℓ and Kindra1, Mahajan2 2018Phys. Rev. D132280View full textAdd to dashboardCite

Explaining the RK and RD(*Sahoo1, Mohanta2, Giri3 2017Phys. Rev. D1002420View full textAdd to dashboardCite

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Product

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About

Predictions of angular observables for B¯s→Kℓℓ and
Kindra¹,
Mahajan²
2018
Phys. Rev. D*
13
2
28
0
View full text Add to dashboard Cite

Explaining the RK and RD(*
Sahoo
¹
,
Mohanta
²
,
Giri
³

2017
Phys. Rev. D
100
2
42
0
View full text Add to dashboard Cite