B-meson hadroproduction in the SACOT-mT scheme

Helenius, Ilkka; Paukkunen, Hannu

doi:10.1007/jhep07(2023)054

Cited by 4 publications

(1 citation statement)

References 46 publications

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“…This is in line with the study in Ref. [61], where the NLO SACOTm T scheme has been used in the case of B-production. The R p Pb at 8.…”

Section: Nuclear Modification Factorsupporting

confidence: 89%

Investigating the B-meson production based on the color dipole transverse momentum representation in pp collisions at the LHC

Sampaio dos Santos,

Gil da Silveira,

Machado

2024

Eur. Phys. J. C

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In this work the B-mesons differential cross sections in pp collisions are evaluated considering the color dipole formalism in transverse momentum representation along with the unintegrated gluon distributions (UGDs). Analytical parametrizations for UGDs including hard scale QCD evolution and those based on parton saturation framework are compared. The theoretical predictions for the B-meson production in terms of the transverse momentum distribution cover the center-of-mass energy of the Large Hadron Collider and the rapidities available at its experiments. The results for different B-mesons are compared to the corresponding measurements reported by the ATLAS, CMS, and LHCb experiments. Predictions are also performed for the nuclear modification factor as a function of the meson transverse momentum.

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“…This is in line with the study in Ref. [61], where the NLO SACOTm T scheme has been used in the case of B-production. The R p Pb at 8.…”

Section: Nuclear Modification Factorsupporting

confidence: 89%

Investigating the B-meson production based on the color dipole transverse momentum representation in pp collisions at the LHC

Sampaio dos Santos,

Gil da Silveira,

Machado

2024

Eur. Phys. J. C

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An FONLL prescription with coexisting flavor number PDFs

Barontini,

Candido,

Hekhorn

et al. 2024

J. High Energ. Phys.

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We present a new prescription to account for heavy quark mass effects in the determination of parton distribution functions (PDFs) based on the FONLL scheme. Our prescription makes explicit use of the freedom to choose the number of active flavors at a given scale and, thus, use coexisting PDFs with different active flavor number. This new prescription is perturbatively equivalent to the former but improves the implementation in two ways. First, it can be naturally generalized to account simultaneously for multiple heavy quark effects, such as charm and bottom effects, which can both be relevant at the same scale due to the small mass difference. Second, it can be trivially generalized to use at any fixed-order or collinear resummed accuracy, while previous prescriptions required ad-hoc expansions of the DGLAP evolution kernels for each coefficient. We supplement the paper with codes for the computation of deep inelastic scattering observables in this new prescription.

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High-energy QCD dynamics from bottom flavor fragmentation at the Hi-Lumi LHC

Celiberto

2024

Eur. Phys. J. C

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We study the inclusive production of hadrons with bottom flavor at the LHC and its luminosity upgrade. We describe the collinear fragmentation of singly b-flavored hadrons, B mesons and $$\Lambda _b$$ Λ b baryons, via the determination of fragmentation functions, while for charmed B mesons, $$B_c(^1S_0)$$ B c ( 1 S 0 ) and $$B_c(^3S_1)$$ B c ( 3 S 1 ) particles, we employ the novel set, built on the basis of state-of-the-art nonrelativistic QCD inputs. We use the Jethad multimodular working environment to analyze rapidity and transverse-momentum distributions for observables sensitive to the associated emission of two hadrons or a hadron-plus-jet system. Our reference formalism is the $$\mathrm{NLL/NLO^+}$$ NLL / NLO + hybrid collinear and high-energy factorization, where the standard collinear description is improved by the inclusions of energy logarithms resummed up to the next-to-leading approximation and beyond. We provide corroborating evidence that b-flavor emissions act as fair stabilizers of the high-energy resummation, thus serving as valuable tools for precision studies of high-energy QCD. As a bonus, we highlight that the predicted production-rate hierarchy between noncharmed b-hadrons and charmed $$B_c(^1S_0)$$ B c ( 1 S 0 ) mesons is in line with recent LHCb estimates. This serves as simultaneous benchmark both for the hybrid factorization and for the single-parton fragmentation mechanism based on initial-scale inputs calculated via the nonrelativistic QCD effective theory.

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B-meson hadroproduction in the SACOT-mT scheme

Cited by 4 publications

References 46 publications

Investigating the B-meson production based on the color dipole transverse momentum representation in pp collisions at the LHC

Investigating the B-meson production based on the color dipole transverse momentum representation in pp collisions at the LHC

An FONLL prescription with coexisting flavor number PDFs

High-energy QCD dynamics from bottom flavor fragmentation at the Hi-Lumi LHC

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