Results 51 to 60 of about 5,868 (157)

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

open access: yesNuclear 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.   +4 more
openaire   +2 more sources

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

open access: yes, 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.   +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

open access: yesJournal 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   +5 more
doaj   +1 more source

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

open access: yesSciPost Physics Proceedings, 2019
The most recent measurements of the observables R_{D^{(*)}} R D
Giovanni Banelli   +3 more
openaire   +3 more sources

Top quark pair production and calorimeter energy resolution studies at a future collider experiment [PDF]

open access: yes, 2012
This thesis is focused on detector concepts and analyses investigated at a future linear electron positron collider. For precision measurements at such a collider, the CALICE collaboration develops imaging calorimeters, which are characterized by a fine ...
Seidel, Katja
core  

Flavor physics in the quark sector [PDF]

open access: yes, 2008
In the past decade, one of the major challenges of particle physics has been to gain an in-depth understanding of the role of quark flavor. In this time frame, measurements and the theoretical interpretation of their results have advanced tremendously. A
Smith, Christopher   +999 more
core   +1 more source

Nonlocal form factor of chromomagnetic penguin in B → Kℓ + ℓ − from QCD light-cone sum rules

open access: yesJournal of High Energy Physics
The branching fraction of the B → Kℓ + ℓ − decay has been measured recently by the LHC experiments, showing a deviation from theory predictions based on the Standard Model (SM).
T. Hurth   +5 more
doaj   +1 more source

High-pT LHC constraints on SMEFT operators affecting rare kaon and hyperon decays

open access: yesJournal of High Energy Physics
We consider the constraints on new physics affecting rare kaon and hyperon decay as parametrized by a low energy effective theory that can be obtained from high-pT observables at LHC. To this end, we match the relevant low energy Wilson coefficients onto
Arnab Roy, German Valencia
doaj   +1 more source

Measurement of b-hadron branching fractions for two-body decays into charmless charged hadrons [PDF]

open access: yes, 2012
Based on data corresponding to an integrated luminosity of 0.37 fb−1 collected by the LHCb experiment in 2011, the following ratios of branching fractions are measured: B(B0→π+π−)/B(B0→K+π−)=0.262±0.009±0.017,(fs/fd)⋅B(B0s→K+K−)/B(B0→K+π−)=0.316±0.009±0 ...
HASH(0x55a6805868f0)   +12 more
core   +1 more source

Non-leptonic hadron decays at the LHC [PDF]

open access: yes, 2023
This manuscript is devoted to the overview of the most recent measurements of non-leptonic hadron decays at the LHC, including results from the ATLAS, CMS, and LHCb collaborations.
Novotny, Radek
core   +1 more source

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