A fragmentation-based study of heavy quark production

Ridolfi, Giovanni; Ubiali, Maria; Zaro, Marco

doi:10.1007/jhep01(2020)196

Cited by 19 publications

(12 citation statements)

References 146 publications

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“…done in ref. [35] to perform a detailed study of the evolution of heavy-quark fragmentation functions. For simplicity, neither MELA nor the results of ref.…”

Section: Jhep10(2021)216 4 Perturbative and Non-perturbative Fragmentation Functions For Heavy Flavor Fragmentationmentioning

confidence: 99%

B-hadron production in NNLO QCD: application to LHC t$$ \overline{t} $$ events with leptonic decays

Czakon

Generet

Mitov

et al. 2021

J. High Energ. Phys.

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We calculate, for the first time, the NNLO QCD corrections to identified heavy hadron production at hadron colliders. The calculation is based on a flexible numeric framework which allows the calculation of any distribution of a single identified heavy hadron plus jets and non-QCD particles. As a first application we provide NNLO QCD predictions for several differential distributions of B hadrons in t$$ \overline{t} $$ t ¯ events at the LHC. Among others, these predictions are needed for the precise determination of the top quark mass. The extension of our results to other processes, like open or associated B and charm production is straightforward. We also explore the prospects for extracting heavy flavor fragmentation functions from LHC data.

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“…done in ref. [35] to perform a detailed study of the evolution of heavy-quark fragmentation functions. For simplicity, neither MELA nor the results of ref.…”

Section: Jhep10(2021)216 4 Perturbative and Non-perturbative Fragmentation Functions For Heavy Flavor Fragmentationmentioning

confidence: 99%

B-hadron production in NNLO QCD: application to LHC t$$ \overline{t} $$ events with leptonic decays

Czakon

Generet

Mitov

et al. 2021

J. High Energ. Phys.

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“…The measurement of the production rate of a Z boson in association with jets originating from b-quarks 1 (Z + b-jets) in proton-proton (pp) collisions provides an important test of perturbative quantum chromodynamics (pQCD). Current predictions for Z +b-jets production are known at next-to-leading-order (NLO) accuracy in pQCD, and they can be derived in either a 4-flavour number scheme (4FNS) or a 5-flavour number scheme (5FNS) [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Measurements of the production cross-section for a Z boson in association with b-jets in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV with the ATLAS detector

Aad¹,

Abbott²,

Abbott³

et al. 2020

J. High Energ. Phys.

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This paper presents a measurement of the production cross-section of a Z boson in association with b-jets, in proton-proton collisions at √ s = 13 TeV with the ATLAS experiment at the Large Hadron Collider using data corresponding to an integrated luminosity of 35.6 fb −1. Inclusive and differential cross-sections are measured for events containing a Z boson decaying into electrons or muons and produced in association with at least one or at least two b-jets with transverse momentum p T > 20 GeV and rapidity |y| < 2.5. Predictions from several Monte Carlo generators based on leading-order (LO) or next-to-leading-order (NLO) matrix elements interfaced with a parton-shower simulation and testing different flavour schemes for the choice of initial-state partons are compared with measured cross-sections. The 5-flavour number scheme predictions at NLO accuracy agree better with data than 4-flavour number scheme ones. The 4-flavour number scheme predictions underestimate data in events with at least one b-jet.

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“…While the importance of the resummation of collinear logarithms has been partially investigated for → splittings [25], the first assessment of the impact of the collinear logarithms of / , as far as the → ¯ splittings are concerned, was only done in Ref. [26], where the impact of missing powers of log( / ) associated to final-state splittings was estimated by means of fragmentation functions. There the resummation of collinear logarithms was shown to be extremely large.…”

Section: Heavy Flavour Splitting In the Final Statesmentioning

confidence: 99%

Theoretical view on Heavy Flavours and jets

Ubiali¹

2021

Proceedings of the Ninth Annual Conference on Large Hadron Collider Physics — PoS(LHCP2021)

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Processes involving heavy quarks are crucial at the LHC, for flavour physics and Higgs physics and as backgrounds for new physics searches. In this brief contribution, I outline the main theoretical challenges involved in the theoretical description of this kind of processes, both at the inclusive and exclusive levels, and highlight a few examples that testify the enormous progress that has been made in the field over the past five years.

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A fragmentation-based study of heavy quark production

Cited by 19 publications

References 146 publications

B-hadron production in NNLO QCD: application to LHC t$$ \overline{t} $$ events with leptonic decays

B-hadron production in NNLO QCD: application to LHC t$$ \overline{t} $$ events with leptonic decays

Measurements of the production cross-section for a Z boson in association with b-jets in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV with the ATLAS detector

Theoretical view on Heavy Flavours and jets

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