Results 51 to 60 of about 2,235,212 (197)

Exclusive Semi-Leptonic Decays of Bottom Baryons

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 1990
J G Körner, R Migneron, F Hussain
exaly   +2 more sources

Rare leptonic and semi-leptonic decays at LHCb [PDF]

Rare leptonic and semi-leptonic decays offer an excellent opportunity to test the Standard Model of Particle Physics. These proceedings report on two recent LHCb measurements. The first is an observation of the rare $J/\psi \to \mu^{+}\mu^{-}\mu^{+}\mu^{-
Hadavizadeh, Tom
core   +2 more sources

Semi-leptonic decays heavy-light to heavy-light [PDF]

Nuclear Physics B - Proceedings Supplements, 2000
We present results for the QCD matrix elements involved in semi-leptonic decays of B-mesons into pseudo scalar heavy light states. The application of NRQCD heavy quarks allows for quark masses around the physical b-quark. We investigate the dependence of the form factors on the external momenta and looked at the mass dependence at zero recoil.
Hein, J., Boyle, P., Davies, C. T. H., Shigemitsu, J., Sloan, J.   +4 more
openaire   +2 more sources

Two-loop QCD correction to differential semi-leptonic b --> u decays in the shape-function region [PDF]

, 2009
We calculate the two-loop QCD correction to the form factors of on-shell b-quark decay to an energetic massless quark, which constitutes the last missing piece required for an View the MathML source determination of |Vub| from inclusive semi-leptonic ...
Beneke, M, Huber, T, Li, X Q, Huber, Tobias, Beneke, Martin, Li, Xin-Qiang   +5 more
core   +1 more source

Renormalisation group analysis of scalar Leptoquark couplings addressing flavour anomalies: emergence of lepton-flavour universality

Journal of High Energy Physics, 2023
Leptoquarks with masses between 2 TeV and 50 TeV are commonly invoked to explain deviations between data and Standard-Model (SM) predictions of several observables in the decays b → cτ ν ¯ $$ b\to c\tau \overline{\nu} $$ and b → sℓ + ℓ − with ℓ = e, μ ...
Marco Fedele, Ulrich Nierste, Felix Wuest   +2 more
doaj   +1 more source

Probing lepton universality with (semi)-leptonic B decays [PDF]

SciPost Physics Proceedings, 2019
The most recent measurements of the observables R_{D^{(*)}} R D
Giovanni Banelli, Robert Fleischer, Ruben Jaarsma, Gilberto Tetlalmatzi-Xolocotzi   +3 more
openaire   +3 more sources

B → K∗µ+µ− and Form Factors for Semi-Leptonic and Radiative B Decays [PDF]

, 2010
The hadronic environment of the LHC favours the study of exclusive modes, and of these semi-leptonic and radiative B decays will play a leading role in the search for new physics (NP).
BHARUCHA, AOIFE,KATY,MANEK, Bharucha, Aoife Katy Manek   +1 more
core  

Uniting low-energy semileptonic and hadronic anomalies within SMEFT

Journal of High Energy Physics
Two categories of four-fermion SMEFT operators are semileptonic (two quarks and two leptons) and hadronic (four quarks). At tree level, an operator of a given category contributes only to processes of the same category.
Alakabha Datta, Jacky Kumar, Suman Kumbhakar, David London   +3 more
doaj   +1 more source

Non-leptonic B-decays in and beyond QCD factorisation [PDF]

, 2005
This thesis examines the non-leptonic B-decays within QCD factorization and beyond, to challenge the assumptions and limitations of the method. We analyse the treatment of the distribution amplitudes of light mesons and present a new model described by ...
Talbot, Angelique N., Talbot, Angelique N   +1 more
core  

Inclusive B ¯ → X s ℓ + ℓ − $$ \overline{B}\to {X}_s{\ell}^{+}{\ell}^{-} $$ at the LHC: theory predictions and new-physics reach

Journal of High Energy Physics
We present theoretical predictions for observables in inclusive B ¯ → X s ℓ + ℓ − $$ \overline{B}\to {X}_s{\ell}^{+}{\ell}^{-} $$ suitable for measurements at hadron colliders through a sum-over-exclusive approach.
Tobias Huber, Tobias Hurth, Jack Jenkins, Enrico Lunghi, Qin Qin, K. Keri Vos   +5 more
doaj   +1 more source