scholarly journals New physics in inclusive semileptonic B decays including nonperturbative corrections

2019 ◽  
Vol 34 (06n07) ◽  
pp. 1950036 ◽  
Author(s):  
Saeed Kamali
Keyword(s):  
New Physics ◽  
Numerical Results ◽  
B Decays ◽  
Power Corrections ◽  
Semileptonic B Decays

In this work, we study the effects of New Physics (NP) operators on the inclusive [Formula: see text] decay including power [Formula: see text] corrections in the NP operators. In analogy with [Formula: see text] observables, we study the observable [Formula: see text]. We present some numerical results for [Formula: see text] and compare the results for this observable with and without power corrections in the NP contributions.

HIGHER-ORDERS IN SEMILEPTONIC B-DECAYS

2012 ◽  
Vol 27 (32) ◽  
pp. 1230027
Author(s):  
SASCHA TURCZYK
Keyword(s):  
B Mesons ◽  
Charm Quark ◽  
Matrix Elements ◽  
B Decays ◽  
Intrinsic Charm ◽  
Power Corrections ◽  
Potential Impact ◽  
Inclusive Semileptonic Decays ◽  
Semileptonic B Decays

In this paper, on a talk given at Lawrence Berkeley Laboratory, we discuss higher-order non-perturbative corrections in inclusive semileptonic decays of B mesons. First the generic calculation is reviewed and then we identify the relevant hadronic matrix-elements up to [Formula: see text]. For a quantitative analysis of these effects, the value of these new matrix-elements is estimated within an approximation scheme. We investigate the role of so-called "intrinsic-charm" operators in this decay, appearing first at order [Formula: see text] in the heavy-quark expansion. These operators induce an expansion infrared sensitive to the charm quark [Formula: see text]. Parametrically the power corrections complement the estimate of the potential impact of [Formula: see text] contributions, which we will explore. In this context, we draw semiquantitative conclusions for the expected scale of valence weak annihilation contribution in semileptonic B decays. Furthermore the effects on the integrated rate and on kinematic moments are then estimated up to [Formula: see text].

scholarly journals Taming the higher power corrections in semileptonic B decays

2016 ◽  
Vol 763 ◽  
pp. 60-65 ◽  
Author(s):  
Paolo Gambino ◽  
Kristopher J. Healey ◽  
Sascha Turczyk
Keyword(s):  
B Decays ◽  
Power Corrections ◽  
Higher Power ◽  
Semileptonic B Decays

scholarly journals Combined analysis of semileptonic B decays to D and D* : R(D(*)) , |Vcb| , and new physics

2017 ◽  
Vol 95 (11) ◽  
Author(s):  
Florian U. Bernlochner ◽  
Zoltan Ligeti ◽  
Michele Papucci ◽  
Dean J. Robinson
Keyword(s):  
New Physics ◽  
B Decays ◽  
Combined Analysis ◽  
Semileptonic B Decays

scholarly journals New physics in semileptonic B decays (?)

2017 ◽  
Author(s):  
Sébastien Descotes-Genon ◽  
Bernat Capdevila ◽  
Lars Hofer ◽  
Joaquim Matias ◽  
Javier Virto
Keyword(s):  
New Physics ◽  
B Decays ◽  
Semileptonic B Decays

scholarly journals Semileptonic B Decays with Dynamical Quarks

2005 ◽  
Vol 140 ◽  
pp. 464-466 ◽  
Author(s):  
J. Shigemitsu ◽  
C.T.H. Davies ◽  
A. Dougall ◽  
K. Foley ◽  
E. Gamiz ◽  
...  
Keyword(s):  
B Decays ◽  
Semileptonic B Decays
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