D0-meson-tagged jet axes difference in proton-proton collisions at √s=5.02 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F25%3A00645515" target="_blank" >RIV/61389005:_____/25:00645515 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/25:00645515

Výsledek na webu

<a href="https://journals.aps.org/prd/abstract/10.1103/nt4q-7t77" target="_blank" >https://journals.aps.org/prd/abstract/10.1103/nt4q-7t77</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/nt4q-7t77" target="_blank" >10.1103/nt4q-7t77</a>

Jazyk výsledku

angličtina

Název v původním jazyce

D0-meson-tagged jet axes difference in proton-proton collisions at √s=5.02 TeV

Popis výsledku v původním jazyce

Heavy-flavor quarks produced in proton- proton (pp) collisions provide a unique opportunity to investigate the evolution of quark-initiated parton showers from initial hard scatterings to final-state hadrons. By examining jets that contain heavy-flavor hadrons, this study explores the effects of both perturbative and nonperturbative QCD on jet formation and structure. The angular differences between various jet axes, Delta R-axis, offer insight into the radiation patterns and fragmentation of charm quarks. The first measurement of D-0-tagged jet axes differences in pp collisions at root s = 5.02 TeV by the ALICE experiment at the LHC is presented for jets with transverse momentum p(ch jet) (T) >= 10 GeV/c and D-0 mesons with p(D0) (T) >= 5 GeV/c. In this D-0-meson-tagged jet measurement, three jet axis definitions, each with different sensitivities to soft, wide-angle radiation, are used: the standard axis, soft drop groomed axis, and winner-takes-all axis. Measurements of the radial distributions of D-0 mesons with respect to the jet axes, Delta R-axis-D(0), are reported, along with the angle, Delta R-axis, between the three jet axes. The D-0 meson emerges as the leading particle in these jets, closely aligning with the winner-takes-all axis and diverging from the standard jet axis. The results also examine how varying the sensitivity to soft radiation with grooming influences the orientation of the soft drop jet axis and uncover that charm-jet structure is more likely to survive grooming when the soft drop axis is further from the D-0 direction, providing further evidence of the dead-cone effect recently measured by ALICE.

Název v anglickém jazyce

D0-meson-tagged jet axes difference in proton-proton collisions at √s=5.02 TeV

Popis výsledku anglicky

Heavy-flavor quarks produced in proton- proton (pp) collisions provide a unique opportunity to investigate the evolution of quark-initiated parton showers from initial hard scatterings to final-state hadrons. By examining jets that contain heavy-flavor hadrons, this study explores the effects of both perturbative and nonperturbative QCD on jet formation and structure. The angular differences between various jet axes, Delta R-axis, offer insight into the radiation patterns and fragmentation of charm quarks. The first measurement of D-0-tagged jet axes differences in pp collisions at root s = 5.02 TeV by the ALICE experiment at the LHC is presented for jets with transverse momentum p(ch jet) (T) >= 10 GeV/c and D-0 mesons with p(D0) (T) >= 5 GeV/c. In this D-0-meson-tagged jet measurement, three jet axis definitions, each with different sensitivities to soft, wide-angle radiation, are used: the standard axis, soft drop groomed axis, and winner-takes-all axis. Measurements of the radial distributions of D-0 mesons with respect to the jet axes, Delta R-axis-D(0), are reported, along with the angle, Delta R-axis, between the three jet axes. The D-0 meson emerges as the leading particle in these jets, closely aligning with the winner-takes-all axis and diverging from the standard jet axis. The results also examine how varying the sensitivity to soft radiation with grooming influences the orientation of the soft drop jet axis and uncover that charm-jet structure is more likely to survive grooming when the soft drop axis is further from the D-0 direction, providing further evidence of the dead-cone effect recently measured by ALICE.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review D

ISSN

2470-0010

e-ISSN

2470-0029

Svazek periodika

112

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

21

Strana od-do

092012

Kód UT WoS článku

001641131800001

EID výsledku v databázi Scopus

2-s2.0-105026906764