Bottom quarks - Open Access .click

Results 141 to 150 of about 1,004,536 (238)

Bottom-hadron production in high-energy pp and heavy-ion collisions [PDF]

EPJ Web of Conferences
The hadro-chemistry of bottom quarks produced in hadronic collisions encodes valuable information on the mechanism of color-neutralization in these reactions.
He Min
doaj +1 more source

Light Quark Mass Effects in Bottom Quark Mass Determinations

, 2001
Recent results for charm quark mass effects in perturbative bottom quark mass determinations from $ $ mesons are reviewed. The connection between the behavior of light quark mass corrections and the infrared sensitivity of some bottom quark mass definitions is examined in some detail.
openaire +2 more sources

Heavy quark symmetry behind b → c semileptonic sum rule

Journal of High Energy Physics
Lepton flavor universality violations in semileptonic b → c transitions have garnered attention over a decade. For $${R}_{{H}_{c}}={\text{BR}}\left({H}_{b}\to {H}_{c}\tau {\overline{\nu }}_{\tau }\right)/{\text{BR}}\left({H}_{b}\to {H}_{c}{\ell ...
Motoi Endo +3 more
doaj +1 more source

Energy loss of heavy quarks in the isotropic collisional hot QCD medium

European Physical Journal C: Particles and Fields, 2019
The collisional energy loss of heavy partons (charm and bottom quarks) has been determined within the framework of semi-classical transport theory implying the Bhatnagar–Gross–Krook (BGK) collisional kernel.
M. Yousuf Jamal, Vinod Chandra
doaj +1 more source

Heavy Quarks at the Tevatron: Top & Bottom

, 1998
To appear in the Proceedings of IVth International Workshop on Progress in Heavy Quark Physics, Rostock, Germany, September 1997.
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Search for dark matter produced in association with a pair of bottom quarks in proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV

Journal of High Energy Physics
A search for dark matter (DM) particles produced in association with bottom quarks is presented. The analysis uses proton-proton collision data at a center-of-mass energy of s $$ \sqrt{s} $$ = 13 TeV, corresponding to an integrated luminosity of 138 fb ...
The CMS collaboration +2394 more
doaj +1 more source

Leading Twist Parton Distribution Amplitudes in Heavy Vector Mesons

EPJ Web of Conferences, 2016
We employed QCD’s Dyson-Schwinger equations (DSEs) for heavy quarks and obtained the leading twist parton distribution amplitudes (PDAs) in heavy vector mesons J/Ψ and ϒ.
Gao Fei +4 more
doaj +1 more source

Bottom Quark Mass from Upsilon Mesons

, 1998
The bottom quark pole mass $M_b$ is determined using a sum rule which relates the masses and the electronic decay widths of the $ $ mesons to large $n$ moments of the vacuum polarization function calculated from nonrelativistic quantum chromodynamics. The complete set of next-to-next-to-leading order (i.e. ${\cal{O}}( _s^2, _s v, v^2)$ where $v$ is
openaire +2 more sources

Total decay rates of B mesons at NNLO-QCD

Journal of High Energy Physics
We update the Standard Model (SM) predictions for the lifetimes of the B +, B d and B s mesons within the heavy quark expansion (HQE), including the recently determined NNLO-QCD corrections to non-leptonic decays of the free b-quark.
Manuel Egner +6 more
doaj +1 more source

Challenging B ¯ s → D s ∗ $$ {\overline{B}}_{(s)}\to {D}_{(s)}^{\left(\ast \right)} $$ form factors with the heavy quark expansion

Journal of High Energy Physics
Recent publications by three lattice QCD collaborations have provided an unprecedented wealth of theoretical predictions for the B ¯ q → D q ∗ $$ {\overline{B}}_q\to {D}_q^{\left(\ast \right)} $$ form factors, for spectator flavours q = u/d and q = s. We
Marzia Bordone +3 more
doaj +1 more source

semi-leptonic decays
rare decays
medicine

flavour symmetries
cp violation