Disentangling the hard gluon bremsstrahlung effects from the relative transverse activity classifier in 
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 collisions

Bencédi, G.; Velasquez, A. Ortiz; Jimenez, A. A. P.

doi:10.1103/physrevd.104.016017

Cited by 11 publications

(7 citation statements)

References 38 publications

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“…The number of charged particles produced in the transverse region is, however, virtually independent of the trigger-hadron momentum and forms a plateau above p trig T ≈ 5 GeV/c. The sum of the transverse momenta carried by charged hadrons in this region shows a weak linear dependence on p trig T above the same threshold, possibly because of a hard gluon radiation into the underlying event [26]. This behaviour is reproduced well by PYTHIA 8.…”

Section: Charged Particle Production With Hadron and Jet Triggersmentioning

confidence: 62%

Defining the underlying-event activity in the presence of heavy-flavour processes

Gyulai,

Sándor,

Vértesi

2022

Preprint

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Section: Charged Particle Production With Hadron and Jet Triggersmentioning

confidence: 62%

Defining the underlying-event activity in the presence of heavy-flavour processes

Gyulai,

Sándor,

Vértesi

2022

Preprint

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“…The number of charged particles produced in the transverse region is, however, virtually independent of the trigger-hadron momentum and forms a plateau above p trig T ≈ 5 GeV/c. The sum of the transverse momenta carried by charged hadrons in this region shows a weak linear dependence on p trig T above the same threshold, possibly because of a hard gluon radiation into the underlying event [31]. This behaviour is reproduced well by PYTHIA 8.…”

Section: Charged Particle Production With Hadron and Jet Triggersmentioning

confidence: 62%

Defining the Underlying-Event Activity in the Presence of Heavy-Flavour Processes in Proton-Proton Collisions at LHC Energies

2022

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We present a systematic analysis of heavy-flavour production in the underlying event in connection to a leading hard process in pp collisions at s=13 TeV, using the PYTHIA 8 Monte Carlo event generator. We compare results from events selected by triggering on the leading hadron, as well as those triggered with reconstructed jets. We show that the kinematics of heavy-flavour fragmentation complicates the characterisation of the underlying event, and the usual method which uses the leading charged final-state hadron as a trigger may wash away the connection between the leading process and the heavy-flavour particle created in association with that. Events triggered with light or heavy-flavour jets, however, retain this connection and bring more direct information on the underlying heavy-flavour production process, but may also import unwanted sensitivity to gluon radiation. The methods outlined in the current work provide means to verify model calculations for light and heavy-flavour production in the jet and the underlying event in great details.

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“…For our analyses [1,2], we used PYTHIA 8.201 [26] with the default Monash 2013 tune [27] and HERWIG 7.2 [28] with its default tune SoftTune [28]. Both models are fully exclusive hadron-level MC generators, containing leading-logarithmic initial-and final-state parton showers, hadronization models and particle decays.…”

Section: Monte Carlo Models and The Extraction Of Jet-like Signalsmentioning

confidence: 99%

“…The presented results have been published in Refs. [1,2]. Reference [2] contains detailed studies with the HERWIG 7.2 Monte Carlo generator as well.…”

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confidence: 99%

Particle production as a function of the underlying event in pp collisions simulated with PYTHIA 8

Bencédi¹,

Velasquez²,

Paz³

2021

Preprint

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In this work we present the production of charged particles associated with high-𝑝 T trigger particles (8 < 𝑝 trig. T < 15 GeV /𝑐) at mid-pseudorapidity in proton-proton collisions at √ 𝑠 = 5.02 TeV simulated with the PYTHIA 8 Monte Carlo model. The study is performed as a function of the relative transverse activity classifier, 𝑅 T , which is the relative charged-particle multiplicity in the transverse region (𝜋/3 < |Δ𝜙| < 2𝜋/3) of the di-hadron correlations, and it is sensitive to the Multi-Parton Interactions. The evolution of the yield of associated particles on both the toward and the away regions with 3 ≤ 𝑝 assoc.

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Disentangling the hard gluon bremsstrahlung effects from the relative transverse activity classifier in pp collisions

Cited by 11 publications

References 38 publications

Defining the underlying-event activity in the presence of heavy-flavour processes

Defining the underlying-event activity in the presence of heavy-flavour processes

Defining the Underlying-Event Activity in the Presence of Heavy-Flavour Processes in Proton-Proton Collisions at LHC Energies

Particle production as a function of the underlying event in pp collisions simulated with PYTHIA 8

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