Results 101 to 110 of about 740,766 (178)

A Search for scalar bottom quarks from gluino decays in anti-p p collisions at s**(1/2) = 1.96-TeV

, 2005
We searched for scalar bottom quarks in 156 pb{sup -1} of {bar p}p collisions at {radical}s = 1.96 TeV recorded by the CDF II experiment at the Tevatron.
Ambrose, D., Amidei, D., /Taiwan, Inst. Phys. /Argonne /Barcelona, IFAE /Baylor U. /INFN, Bologna /Bologna U. /Brandeis U. /UC, Davis /UCLA /UC, San Diego /UC, Santa Barbara, Akimoto, T., Abulencia, A., Acosta, D., Adelman, Jahred A., Affolder, T., Anastassov, A., Amerio, S., Albrow, M.G., Anikeev, K.   +11 more
core  

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, Matteo Fael, Alexander Lenz, Maria Laura Piscopo, Aleksey V. Rusov, Kay Schönwald, Matthias Steinhauser   +6 more
doaj   +1 more source

Possible Improvements of the Signal Selections in ATLAS for Dark Matter Production in association with Heavy Flavour Quarks

, 2018
During this Summer Student Programme at CERN I had the opportunity to join the DM+HF ATLAS group working on WIMPs pair production associated with heavy flavour (bottom and top) quarks, arising from proton-proton collisions at the LHC.
Ruimi, Ophir Moshe
core  

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, Nico Gubernari, Martin Jung, Danny van Dyk   +3 more
doaj   +1 more source

Search for Vector Like Quarks by CMS

, 2018
International audienceWe present results of searches for massive vector-like top and bottom quark partners using proton-proton collision data collected with the CMS detector at the CERN LHC at a center-of-mass energy of 13 TeV. Single and pair production
Beauceron, Stéphanie
core   +2 more sources

Nonperturbative parameters of inclusive Λ b decays from Small Velocity Sum Rules

Journal of High Energy Physics
We investigate the nonperturbative parameters entering the heavy quark expansion for the inclusive decay rates of the Λ b baryon, focusing on the kinetic term μ ̂ π 2 $$ {\hat{\mu}}_{\pi}^2 $$ and the Darwin term ρ ̂ D 3 $$ {\hat{\rho}}_D^3 $$ .
Blaženka Melić, Ivan Nišandžić
doaj   +1 more source

Search for supersymmetric partners of top and bottom quarks at root s=189 GeV

, 2000
Searches for supersymmetric partners of top and bottom quarks are presented using data taken by the DELPHI experiment at LEP in 1997 and 1998. No deviations from standard model expectations are observed in these data sets, which are taken at centre-of ...
Adye, T, Amato, S, Alderweireld, T, Allmendinger, T, Antilogus, P, Abreu, P,, Amapane, N, Adzic, P, Alemany, R, Andreazza, A, Apel, WD, As, Ajinenko, I, Allport, PP, Almehed, S, Adam, W, Alekseev, GD, Andersson, P, Albrecht, Z, Arnoud, Y, Andringa, S, Amaldi, U, Anassontzis, EG   +22 more
core  

Quenching and flow of charm and bottom quarks via semi-leptonic decay of $D$ and $B$ mesons in Pb+Pb collisions at the LHC [PDF]

Heavy flavor particles provide important probes of the microscopic structure and thermodynamic properties of the quark-gluon plasma (QGP) produced in high-energy nucleus-nucleus collisions.
Li, Shu-Qing, Qin, Guang-You, Xing, Wen-Jing, Cao, Shanshan   +3 more
core  

Measurements of Higgs boson coupling properties to bottom quarks and charm quarks with the ATLAS detector

Testing the Yukawa couplings of the Higgs boson with fermions is essential to understanding the origin of fermion masses. Higgs boson decays to quark pairs are an important probe of these couplings, and of properties of the Higgs boson more generally ...
Di Bello, Francesco Armando
core  

High-precision calculation of the quark-gluon coupling from lattice QCD. [PDF]

Nature
Dalla Brida M, Höllwieser R, Knechtli F, Korzec T, Ramos A, Sint S, Sommer R.   +6 more
europepmc   +1 more source