Light-flavor particle production in high-multiplicity pp collisions at √s=13 TeV as a function of transverse spherocity
The ALICE collaboration. (2024). Light-flavor particle production in high-multiplicity pp collisions at √s=13 TeV as a function of transverse spherocity. Journal of High Energy Physics, 2024, Article 184. https://doi.org/10.1007/JHEP05(2024)184
Julkaistu sarjassa
Journal of High Energy PhysicsTekijät
Päivämäärä
2024Tekijänoikeudet
© CERN, for the beneft of the ALICE Collaboration. Article funded by SCOAP3
.
Results on the transverse spherocity dependence of light-flavor particle production (π, K, p, ϕ, K∗0, K0S, Λ, Ξ) at midrapidity in high-multiplicity pp collisions at √s=13 TeV were obtained with the ALICE apparatus. The transverse spherocity estimator (SpT=1O) categorizes events by their azimuthal topology. Utilizing narrow selections on SpT=1O, it is possible to contrast particle production in collisions dominated by many soft initial interactions with that observed in collisions dominated by one or more hard scatterings. Results are reported for two multiplicity estimators covering different pseudorapidity regions. The SpT=1O estimator is found to effectively constrain the hardness of the events when the midrapidity (|η|<0.8) estimator is used. The production rates of strange particles are found to be slightly higher for soft isotropic topologies, and severely suppressed in hard jet-like topologies. These effects are more pronounced for hadrons with larger mass and strangeness content, and observed when the topological selection is done within a narrow multiplicity interval. This demonstrates that an important aspect of the universal scaling of strangeness enhancement with final-state multiplicity is that high-multiplicity collisions are dominated by soft, isotropic processes. On the contrary, strangeness production in events with jet-like processes is significantly reduced. The results presented in this article are compared with several QCD-inspired Monte Carlo event generators. Models that incorporate a two-component phenomenology, either through mechanisms accounting for string density, or thermal production, are able to describe the observed strangeness enhancement as a function of SpT=1O.
...
Julkaisija
Springer NatureISSN Hae Julkaisufoorumista
1126-6708Asiasanat
Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/243862016
Metadata
Näytä kaikki kuvailutiedotKokoelmat
Rahoittaja(t)
Suomen Akatemia; Euroopan komissioRahoitusohjelmat(t)
Huippuyksikkörahoitus, SA
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Lisätietoja rahoituksesta
European Research Council, Strong 2020 - Horizon2020 (grant nos. 950692, 824093); Academy of Finland (Center of Excellence in Quark Matter) (grant nos. 346327, 346328), FinlandLisenssi
Samankaltainen aineisto
Näytetään aineistoja, joilla on samankaltainen nimeke tai asiasanat.
-
Production of pions, kaons, and protons as a function of the relative transverse activity classifier in pp collisions at √s = 13 TeV
ALICE Collaboration (Springer, 2023) -
Search for jet quenching effects in high-multiplicity pp collisions at s√ = 13 TeV via di-jet acoplanarity
The ALICE collaboration (Springer Nature, 2024)The ALICE Collaboration reports a search for jet quenching effects in high-multiplicity (HM) proton−proton collisions at s√ = 13 TeV, using the semi-inclusive azimuthal-difference distribution Δφ of charged-particle jets ... -
J/ψ production as a function of charged-particle multiplicity in p-Pb collisions at √sNN = 8.16 TeV
ALICE collaboration (Springer, 2020)Inclusive J/ψ yields and average transverse momenta in p-Pb collisions at a center-of-mass energy per nucleon pair √sNN = 8.16 TeV are measured as a function of the charged-particle pseudorapidity density with ALICE. The ... -
Investigating strangeness enhancement with multiplicity in pp collisions using angular correlations
The ALICE collaboration (Springer Nature, 2024)A study of strange hadron production associated with hard scattering processes and with the underlying event is conducted to investigate the origin of the enhanced production of strange hadrons in small collision systems ... -
Multiplicity dependence of light-flavor hadron production in pp collisions at √s = 7 TeV
ALICE Collaboration (American Physical Society, 2019)Comprehensive results on the production of unidentified charged particles, π±, K±, K0S, K∗(892)0, p, ¯p, ϕ(1020), Λ, ¯¯¯Λ, Ξ−, ¯¯¯Ξ+, Ω−, and ¯¯¯Ω+ hadrons in proton-proton (pp) collisions at √s=7 TeV at midrapidity (|y|<0.5) ...
Ellei toisin mainittu, julkisesti saatavilla olevia JYX-metatietoja (poislukien tiivistelmät) saa vapaasti uudelleenkäyttää CC0-lisenssillä.