Results 31 to 40 of about 20,648,949 (270)

Covariant and heavy quark symmetric quark models [PDF]

open access: yesPhysical Review D, 1994
There exist relativistic quark models (potential or MIT-bag) which satisfy the heavy quark symmetry (HQS) relations among meson decay constants and form factors. Covariant construction of the momentum eigenstates, developed here, can correct for spurious center-of-mass motion contributions.Proton form factor and M1 transitions in quarkonia are ...
Srećko Žganec, Dubravko Tadić
openaire   +4 more sources

Spectroscopy of the Ωccb baryon in the hypercentral constituent quark model [PDF]

open access: yes, 2018
We extract the mass spectrum of the triply heavy baryon Ω ccb using the hypercentral constituent quark model. The first order correction is also added to the potential term of the Hamiltonian.
Zalak Shah, Ajay Kumar Rai
semanticscholar   +1 more source

T-odd quark-gluon-quark correlation function in the light-front quark-diquark model

open access: yesSciPost Physics Proceedings, 2022
We have scrutinized the transverse momentum dependent quark-gluon-quark correlation function. We have utilized the light-front quark-diquark model to study the time-reversal-odd interaction-dependent twist-3 gluon distributions which we have obtained ...
Shubham Sharma, Narinder Kumar, Harleen Dahiya
doaj   +1 more source

Mass spectra and radiative transitions of doubly heavy baryons in a relativized quark model [PDF]

open access: yes, 2017
We study the mass spectra and radiative decays of doubly heavy baryons within the diquark picture in a relativized quark model. The mass of the JP=1/2+ Ξcc ground state is predicted to be 3606 MeV, which is consistent with the mass of Ξcc++(3621) newly ...
Q. Lu   +3 more
semanticscholar   +1 more source

Modelling the quark propagator [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 2003
The quark propagator is at the core of lattice hadron spectrum calculations as well as studies in other nonperturbative schemes. We investigate the quark propagator with an improved staggered action (Asqtad) and an improved gluon action, which provides good quality data down to small quark masses.
Bowman, P.   +3 more
openaire   +5 more sources

Branching fractions of semileptonic D and $$D_s$$Ds decays from the covariant light-front quark model [PDF]

open access: yes, 2017
Based on the predictions of the relevant form factors from the covariant light-front quark model, we show the branching fractions for the $$D (D_s) \rightarrow (P,\,S,\,V,\,A)\,\ell \nu _\ell $$D(Ds)→(P,S,V,A)ℓνℓ ($$\ell =e$$ℓ=e or $$\mu $$μ) decays ...
Hai-Yang Cheng, X. Kang
semanticscholar   +1 more source

Recent results on top quark mass and properties and rare/anomalous top quarks interactions in CMS

open access: yesSciPost Physics Proceedings, 2022
The amount of data collected by the CMS experiment at the CERN LHC in the second data taking period provides the possibility to study absolute and differential cross sections of top quark interaction processes with high precision.
Sebastian Wuchterl
doaj   +1 more source

Chiral quark model [PDF]

open access: yesPramana, 2003
Talk presented at the workshop QCD 2002, IIT Kanpur, Nov.
openaire   +3 more sources

Excited bottom and bottom-strange mesons in the quark model [PDF]

open access: yes, 2016
In order to understand the possible $q\overline{q}$ quark-model assignments of the ${B}_{J}(5840)$ and ${B}_{J}(5960)$ recently reported by the LHCb Collaboration, we evaluate mass spectra, strong decays, and radiative decays of bottom and bottom-strange
Q. Lu   +4 more
semanticscholar   +1 more source

Test of lepton universality in beauty-quark decays [PDF]

open access: yesNature Physics, 2021
The standard model of particle physics currently provides our best description of fundamental particles and their interactions. The theory predicts that the different charged leptons, the electron, muon and tau, have identical electroweak interaction ...
L. C. R. Aaij   +499 more
semanticscholar   +1 more source

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