scholarly journals NNLO unquenched calculation of the b quark mass

2000 ◽  
Vol 2000 (03) ◽  
pp. 018-018 ◽  
Author(s):  
Vicent Giménez ◽  
Leonardo Giusti ◽  
Guido Martinelli ◽  
Federico Rapuano
Keyword(s):  
Quark Mass ◽  
B Quark

scholarly journals Bs → Kℓv form factors with 2+1 flavors

2018 ◽  
Vol 175 ◽  
pp. 13008 ◽  
Author(s):  
Yuzhi Liu ◽  
Jon A. Bailey ◽  
A. Bazavov ◽  
C. Bernard ◽  
C. M. Bouchard ◽  
...  
Keyword(s):  
Quark Mass ◽  
Strange Quark ◽  
Lattice Spacing ◽  
Light Quark ◽  
Form Factors ◽  
Ckm Matrix ◽  
Strange Quark Mass ◽  
Light Quark Mass ◽  
B Quark

Using the MILC 2+1 flavor asqtad quark action ensembles, we are calculating the form factors f0 and f+ for the semileptonic Bs → Kℓv decay. A total of six ensembles with lattice spacing from ≈ 0.12 to 0.06 fm are being used. At the coarsest and finest lattice spacings, the light quark mass m’l is one-tenth the strange quark mass m’s. At the intermediate lattice spacing, the ratio m’l/m’s ranges from 0.05 to 0.2. The valence b quark is treated using the Sheikholeslami-Wohlert Wilson-clover action with the Fermilab interpretation. The other valence quarks use the asqtad action. When combined with (future) measurements from the LHCb and Belle II experiments, these calculations will provide an alternate determination of the CKM matrix element |Vub|.

scholarly journals A $N_f = 2 + 1 + 1$ "twisted" determination of the b quark mass

2014 ◽  
Author(s):  
Eleonora Picca ◽  
Petros Dimopoulos ◽  
Nuria Carrasco Vela ◽  
Roberto Frezzotti ◽  
Vincente Gimenez ◽  
...  
Keyword(s):  
Quark Mass ◽  
B Quark

The b quark mass effect in the QCD correction to charged-Higgs-boson decay of the top quark

1992 ◽  
Vol 285 (1-2) ◽  
pp. 137-140 ◽  
Author(s):  
Chong Sheng Li ◽  
Yan Sheng Wei ◽  
Jin Min Yang
Keyword(s):  
Higgs Boson ◽  
Top Quark ◽  
Quark Mass ◽  
Mass Effect ◽  
Charged Higgs Boson ◽  
Charged Higgs ◽  
B Quark

THE EFFECTS OF THE QCD CORRECTIONS TO $\Gamma \left( {H^0 \to b\bar b} \right)$

1994 ◽  
Vol 09 (14) ◽  
pp. 1309-1325 ◽  
Author(s):  
ANDREI L. KATAEV ◽  
VICTOR T. KIM
Keyword(s):  
Renormalization Group ◽  
Decay Width ◽  
Quark Mass ◽  
Threshold Effects ◽  
Leading Order ◽  
B Quark

We consider in detail various theoretical uncertainties of the perturbative predictions for the decay width of [Formula: see text] process in the region 60 GeV<MH≤2 MW. We calculate the order [Formula: see text]-contributions to the expression for [Formula: see text] through the pole b-quark mass mb and demonstrate that they are important for the elimination of the numerical difference between the corresponding expression and the renormalization-group (RG) which can be improved by the running b-quark mass. In the case of mb=4.8 GeV and [Formula: see text] we observe the identical cancellation of the next-to-leading order RG-improved corrections to [Formula: see text] at Mch=130 (65) GeV and the indications to the asymptotic explosion of the corresponding next-to-next-to-leading parametrization. The theoretical importance of the order [Formula: see text] massive corrections [Formula: see text] to for modeling the threshold effects is demonstrated.

scholarly journals Resummation and matching of b-quark mass effects in b b ¯ H $$ b\overline{b}H $$ production

2015 ◽  
Vol 2015 (11) ◽  
Author(s):  
Marco Bonvini ◽  
Andrew S. Papanastasiou ◽  
Frank J. Tackmann
Keyword(s):  
Quark Mass ◽  
Mass Effects ◽  
B Quark

scholarly journals Leading logarithms of the b quark mass in inclusive B → Xs γ decay

1995 ◽  
Vol 357 (4) ◽  
pp. 653-658 ◽  
Author(s):  
Anton Kapustin ◽  
Zoltan Ligeti ◽  
H.David Politzer
Keyword(s):  
Quark Mass ◽  
B Quark

scholarly journals QUARKONIUM CHROMO-POLARIZABILITY FROM THE DECAYS J/ψ(ϒ)→ππℓ+ℓ-

2004 ◽  
Vol 19 (09) ◽  
pp. 665-670 ◽  
Author(s):  
M. B. VOLOSHIN
Keyword(s):  
Nuclear Matter ◽  
Quark Mass ◽  
Mass Shift ◽  
Soft Gluon ◽  
Electric Interaction ◽  
Precision Determination ◽  
B Quark

It is pointed out that the diagonal amplitude of the E1–E1 chromo-electric interaction with soft gluon fields (chromo-polarizability) can be measured directly for the J/ψ and ϒ resonances in the decays J/ψ→ππℓ+ℓ- and ϒ→ππℓ+ℓ- with soft pions. For the J/ψ this amplitude is often discussed in connection with the J/ψ interaction with nuclear matter, while for the ϒ the chromo-polarizability enters the estimates of the nonperturbative mass shift of the resonance relevant to precision determination of the b quark mass from the ϒ mass.

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