4.4 Article

Non-factorisable effects in the decays B0s → D+s π- and B0 → D+K- from LCSR

Related references

Note: Only part of the references are listed.
Article Physics, Particles & Fields

Disintegration of beauty: a precision study

Alexander Lenz et al.

Summary: We update the Standard Model predictions for B meson lifetimes within the heavy quark expansion, incorporating the Darwin operator, SU(3)(F) breaking corrections, and eye-contractions. Our results are in good agreement with experimental data, but there is tension in the ratio τ(Bs)/τ(Bd) when considering certain input parameters. It is crucial to better constrain these parameters to reduce theory uncertainties.

JOURNAL OF HIGH ENERGY PHYSICS (2023)

Article Physics, Multidisciplinary

Two-body nonleptonic decays of the heavy mesons in the factorization approach

Shuo-Ying Yu et al.

Summary: In the factorization approach, we calculated the branching fractions of 100 two-body nonleptonic decay channels, including 44 channels of charm meson decays and 56 channels of bottom meson decays. Our calculations confirmed the previous observation that the theoretical predictions significantly improve when taking the limit for the number of colors N-> infinity for charm meson decays. For bottom meson decays, we included the penguin contributions. The weak decay form factors obtained from the relativistic quark model have been well tested and the predictions for the nonleptonic decay branching fractions are generally acceptable. However, a more sophisticated consideration of the final-state interaction is necessary for a quantitative calculation.

FRONTIERS OF PHYSICS (2023)

Article Physics, Multidisciplinary

Deciphering the Long-Distance Penguin Contribution to (B)over-bard,s → γγ Decays

Qin Qin et al.

Summary: For the first time, we calculated the long-distance penguin contribution to double radiative B-meson decays using the perturbative factorization theorem. The dominant penguin amplitude, numerically, is due to soft-gluon radiation off the light up-quark loop rather than the charm-loop effect. Importantly, the long-distance up-quark penguin contribution cancels out the known factorizable power correction, making B-d, B- s -> gamma gamma significant probes of physics beyond the standard model.

PHYSICAL REVIEW LETTERS (2023)

Article Physics, Particles & Fields

Strange-quark mass effects in the B-s meson's light-cone distribution amplitude

Thorsten Feldmann et al.

Summary: We investigate the differences between the light-cone distribution amplitudes (LCDAs) of B-s and B-q mesons induced by a non-vanishing strange-quark mass compared to light quark masses. We consider the radiative tail related to the short-distance expansion of light-ray operators in heavy-quark effective theory and calculate the matching coefficients for the leading and sub-leading 2-particle LCDAs. Based on a generic parameterization, we discuss the quantitative effect of the shape of the leading LCDA and compare our findings with recent results on the inverse moments of the LCDAs from QCD sum rules.

JOURNAL OF HIGH ENERGY PHYSICS (2023)

Article Physics, Particles & Fields

Taming new physics in b ? cud(s) with t(B+)/t(Bd) and asld

Alexander Lenz et al.

Summary: This article studies the effects of new physics in color-allowed non-leptonic B-meson decay channels and computes their contributions to theoretical predictions. The well-known lifetime ratio and experimental bounds on CP asymmetry provide strong constraints on certain coefficients of new physics.

JOURNAL OF HIGH ENERGY PHYSICS (2023)

Article Physics, Particles & Fields

Revealing new physics in Bs0 → Ds∓ K± decays

Robert Fleischer et al.

Summary: By studying the B-s(0) -> D-s(-/+) K-+/- system, we can determine the Unitarity Triangle angle gamma. We confirmed the large deviation from the Unitarity Triangle and other gamma measurements shown by LHCb analysis through a transparent study of the measured observables. The puzzling patterns in the rates of individual B-s(0) -> D-s(-/+) K-+/- channels, which show tensions up to 4.8 sigma, suggest the presence of CP-violating contributions of New Physics.

EUROPEAN PHYSICAL JOURNAL C (2023)

Article Physics, Particles & Fields

Revisiting rescattering contributions to $$ \overline{B} $$(s) → $$ {D}_{(s)}^{\left(\ast \right)}M $$ decays

Motoi Endo et al.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

Review Physics, Nuclear

B Flavor Anomalies: 2021 Theoretical Status Report

David London et al.

Summary: This review summarizes the observational data and theoretical explanations of the B flavor anomalies. The authors discuss both model-independent effective field theory approaches and explicit model building methods, emphasizing the complementarity between the two. In addition, combined explanations for the B anomalies and other related problems are presented.

ANNUAL REVIEW OF NUCLEAR AND PARTICLE SCIENCE (2022)

Article Physics, Particles & Fields

Muon-electron backward scattering: a prime example for endpoint singularities in SCET

Guido Bell et al.

Summary: The study argues that energetic muon-electron scattering in the backward direction can be viewed as a template case to study the resummation of large logarithms related to endpoint divergences appearing in the effective-theory formulation of hard-exclusive processes. It is found that rapidity logarithms generate an infinite tower of collinear-anomaly exponents, which is a generic consequence of the underlying 2 -> 2 kinematics.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

Article Physics, Particles & Fields

Systematic parametrization of the leading B-meson light-cone distribution amplitude

Thorsten Feldmann et al.

Summary: In this study, we propose a parametrization of the leading B-meson light-cone distribution amplitude in heavy-quark effective theory. Using a conformal transformation, we obtain a systematic Taylor expansion and an integral bound in position space, allowing us to control the truncation error. Our parametrization also provides compact analytical expressions for various derived quantities and can describe the renormalization-group evolution through an expansion in associated Laguerre polynomials in momentum space. This approach enables straightforward and transparent implementation of phenomenological constraints, regardless of their origin, and allows inclusion of theoretical information through the local operator product expansion.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

Article Astronomy & Astrophysics

Nonfactorizable charming loops in FCNC B decays versus B-decay semileptonic form factors

Dmitri Melikhov

Summary: This article compares a nonfactorizable charming-loop correction and an exclusive FCNC B decay represented by the three-particle Bethe-Salpeter amplitude of the B meson. The results show substantial differences in dominant configurations and parameters between these two corrections.

PHYSICAL REVIEW D (2022)

Article Astronomy & Astrophysics

Testing the Standard Model with CP asymmetries in flavor-specific nonleptonic decays

Tim Gershon et al.

Summary: Motivated by discrepancies between the rates of color-allowed nonleptonic channels and their Standard Model expectations, this study investigates the potential to study CP asymmetries with these decays. The study finds that beyond Standard Model contributions could significantly enhance the CP asymmetries, offering a way to identify effects beyond the Standard Model without relying on predictions affected by hadronic effects. The experimental prospects, particularly for the precise determination of CP asymmetry in (B) over bar (s) -> D-s(+)pi(-) decays, by the LHCb experiment are also discussed.

PHYSICAL REVIEW D (2022)

Article Physics, Particles & Fields

Non-local matrix elements in B(s) → {K(*), φ}l+l-

Nico Gubernari et al.

Summary: By recalculating hadronic matrix elements and deriving the first dispersive bound on non-local matrix elements, we have successfully improved the parametrization of non-local matrix elements in rare Bs decays, provided numerical results, and demonstrated the power of the dispersive bound.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

Article Physics, Particles & Fields

QED factorization of two-body non-leptonic and semi-leptonic B to charm decays

Martin Beneke et al.

Summary: The QCD x QED factorization is applied to study two-body non-leptonic and semi-leptonic B decays with heavy-light final states. It is found that including QED effects does not change the general factorization structure, with corrections at the sub-percent level in the amplitude level. Phenomenological implications of QED effects on discrepancies between theory and experimental data are discussed, particularly in relation to non-leptonic over semi-leptonic decay rate ratios.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

Article Physics, Particles & Fields

Probing new physics in class-I B-meson decays into heavy-light final states

Fang-Min Cai et al.

Summary: With updated experimental data and improved theoretical calculations, significant deviations are observed between Standard Model predictions and experimental measurements of B meson decays, suggesting possible effects of new physics four-quark operators.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

Review Physics, Nuclear

Flavour anomalies in heavy quark decays

J. Albrecht et al.

Summary: Recent measurements of b-hadron decays show consistent tensions with the Standard Model predictions, indicating potential signs of New Physics beyond the SM.

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS (2021)

Article Physics, Particles & Fields

Exploiting dijet resonance searches for flavor physics

Marzia Bordone et al.

Summary: This study reinterprets the dijet resonance searches from ATLAS and CMS to set robust constraints on hypothetical scalar and vector mediators with masses up to 5TeV. The analysis quantifies the permissible size of new physics in specific processes and reveals a pressing tension between new physics explanations and experimental anomalies. High pT constraints are essential for understanding the parameter space consistent with low pT flavor physics data.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

Article Astronomy & Astrophysics

QCD sum rules for parameters of the B-meson distribution amplitudes

Muslem Rahimi et al.

Summary: New estimates for the parameters lambda(2)(E), lambda(2)(H) and their ratio R = lambda(2)(E)/lambda(2)(H) in the B-meson light-cone distribution amplitudes have been obtained based on two-point QCD sum rules for the diagonal correlation function, encompassing contributions up to mass dimension seven in the operator-product expansion. The ratio R = (0.1 +/- 0.1) was found with lambda(2)(H) = (0.15 +/- 0.05) GeV2 and lambda(2)(E) = (0.01 +/- 0.01) GeV2.

PHYSICAL REVIEW D (2021)

Review Physics, Particles & Fields

FLAG Review 2019

S. Aoki et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

Article Physics, Particles & Fields

Heavy-Quark expansion for (B)over-bars → Ds(*) form factors and unitarity bounds beyond the SU(3)F limit

Marzia Bordone et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

Article Physics, Particles & Fields

A puzzle in B(s)0→D(s)()+{π-,K-} decays and extraction of the fs/fd fragmentation fraction

Marzia Bordone et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

Article Physics, Particles & Fields

Inverse moment of the Bs-meson distribution amplitude from QCD sum rule

Alexander Khodjamirian et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

Article Computer Science, Interdisciplinary Applications

FeynCalc 9.3: New features and improvements

Vladyslav Shtabovenko et al.

COMPUTER PHYSICS COMMUNICATIONS (2020)

Article Physics, Particles & Fields

B P and B V form factors from B-meson light-cone sum rules beyond leading twist

N. Gubernari et al.

JOURNAL OF HIGH ENERGY PHYSICS (2019)

Article Physics, Particles & Fields

QCD calculations of B , K form factors with higher-twist corrections

Cai-Dian Lu et al.

JOURNAL OF HIGH ENERGY PHYSICS (2019)

Article Computer Science, Interdisciplinary Applications

Version 3 of RunDec and CRunDec

Florian Herren et al.

COMPUTER PHYSICS COMMUNICATIONS (2018)

Article Physics, Particles & Fields

Subleading-power corrections to the radiative leptonic B → γlv decay in QCD

Yu-Ming Wang et al.

JOURNAL OF HIGH ENERGY PHYSICS (2018)

Article Physics, Particles & Fields

Radiative leptonic decay B → γlvl with subleading power corrections

M. Beneke et al.

JOURNAL OF HIGH ENERGY PHYSICS (2018)

Article Physics, Particles & Fields

Higher-twist effects in light-cone sum rule for the B → π form factor

Aleksey V. Rusov

EUROPEAN PHYSICAL JOURNAL C (2017)

Article Physics, Particles & Fields

Higher-twist B-meson distribution amplitudes in HQET

V. M. Braun et al.

JOURNAL OF HIGH ENERGY PHYSICS (2017)

Article Physics, Particles & Fields

Two-body non-leptonic heavy-to-heavy decays at NNLO in QCD factorization

Tobias Huber et al.

JOURNAL OF HIGH ENERGY PHYSICS (2016)

Article Physics, Particles & Fields

Factorization and dispersion relations for radiative leptonic B decay

Yu-Ming Wang

JOURNAL OF HIGH ENERGY PHYSICS (2016)

Article Physics, Particles & Fields

QCD sum rules for quark-gluon three-body components in the B meson

Tetsuo Nishikawa et al.

NUCLEAR PHYSICS B (2014)

Article Astronomy & Astrophysics

Soft contribution to B → γlνl and the B-meson distribution amplitude

V. M. Braun et al.

PHYSICS LETTERS B (2013)

Article Physics, Particles & Fields

Light-cone distribution amplitudes for heavy-quark hadrons

Guido Bell et al.

JOURNAL OF HIGH ENERGY PHYSICS (2013)

Article Physics, Particles & Fields

B meson distribution amplitude from B → γlv

M. Beneke et al.

EUROPEAN PHYSICAL JOURNAL C (2011)

Article Physics, Particles & Fields

Charm-loop effect in B → K(*)l+l- and B → K*γ

A. Khodjamirian et al.

JOURNAL OF HIGH ENERGY PHYSICS (2010)

Article Physics, Particles & Fields

Factorization at subleading power and irreducible uncertainties in (B)over-bar → Xsγ decay

Michael Benzke et al.

JOURNAL OF HIGH ENERGY PHYSICS (2010)

Article Physics, Particles & Fields

B → D(*) form factors from QCD light-cone sum rules

S. Faller et al.

EUROPEAN PHYSICAL JOURNAL C (2009)

Article Astronomy & Astrophysics

Operator product expansion for B-meson distribution amplitude and dimension-5 HQET operators

Hiroyuki Kawamura et al.

PHYSICS LETTERS B (2009)

Article Astronomy & Astrophysics

Form factors from light-cone sum rules with B-meson distribution amplitudes

Alexander Khodjamirian et al.

PHYSICAL REVIEW D (2007)

Article Astronomy & Astrophysics

Model-independent properties of the B-meson distribution amplitude -: art. no. 094028

SJ Lee et al.

PHYSICAL REVIEW D (2005)

Article Astronomy & Astrophysics

B-meson distribution amplitudes of geometric twist versus dynamical twist -: art. no. 034023

B Geyer et al.

PHYSICAL REVIEW D (2005)

Article Astronomy & Astrophysics

B-meson distribution amplitude from the B→π form factor

A Khodjamirian et al.

PHYSICS LETTERS B (2005)

Article Physics, Particles & Fields

Effective Hamiltonian for non-leptonic |ΔF|=1 decays at NNLO in QCD

M Gorbahn et al.

NUCLEAR PHYSICS B (2005)

Article Astronomy & Astrophysics

B-meson distribution amplitude in QCD -: art. no. 034014

VM Braun et al.

PHYSICAL REVIEW D (2004)

Article Physics, Particles & Fields

Non-factorizable contribution to (B)over-bar0→D0π0

JY Cui et al.

EUROPEAN PHYSICAL JOURNAL C (2004)

Article Astronomy & Astrophysics

Flavor SU(3) symmetry in charmless Beta decays

A Khodjamirian et al.

PHYSICAL REVIEW D (2003)

Review Physics, Particles & Fields

QCD factorization in B → πK, ππ decays and extraction of Wolfenstein parameters

M Beneke et al.

NUCLEAR PHYSICS B (2001)

Article Physics, Particles & Fields

B → π π decay in QCD

A Khodjamirian

NUCLEAR PHYSICS B (2001)