Results 41 to 50 of about 5,931 (207)

Searching for new physics in the differential decay width of a Λb semi-leptonic decay

open access: yesModern Physics Letters A, 2022
We propose to investigate the effects of new physics in the semi-leptonic sequential decay [Formula: see text]. First, we write the general, model-independent, non-covariant expression of the differential decay width of the process. Then, we calculate that observable according to three different types of new physics interactions, which might explain ...
Di Salvo, E., Ajaltouni, Z.J.
openaire   +4 more sources

Search for top quark decays t → qH with H → γγ using the ATLAS detector [PDF]

open access: yes, 2014
A search is performed for flavour-changing neutral currents in the decay of a top quark to an up-type (c, u) quark and a Higgs boson, where the Higgs boson decays to two photons.
G. Khoriauli   +999 more
core   +1 more source

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

open access: yes, 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   +1 more
core  

Uniting low-energy semileptonic and hadronic anomalies within SMEFT

open access: yesJournal 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   +3 more
doaj   +1 more source

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

Home - About - Disclaimer - Privacy