Methods for separation of deuterons produced in the medium and in jets in high energy collisions

Abstract

Coalescence has long been used to describe the production of light (anti-)nuclei in heavy ion collisions. The same underlying mechanism may also exist in jets when a proton and a neutron are close enough in phase space to form a deuteron. We model deuteron production in jets by applying an afterburner to protons and neutrons produced in PYTHIA for $p$+$p$ collisions at a center of mass energy $\sqrt{s}=$ 7 TeV. PYTHIA provides a reasonable description of the proton spectra and the shape of the deuteron spectrum predicted by the afterburner is in agreement with the data. We show that the rise in the coalescence parameter $B_2$ with momentum observed in data is consistent with coalescence in jets. We show that di-hadron correlations can be used to separate the contributions from the jet and the underlying event. This model predicts that the conditional coalescence parameter in the jet-like correlation should be independent of the trigger momentum.

arXiv comment6 pages, 7 figures

References in corpus (24)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR
• Tuning Monte Carlo Generators: The Perugia Tunes
• Long range rapidity correlations and jet production in high energy nuclear collisions
• Coalescence and flow in ultra-relativistic heavy ion collisions
• Production of light nuclei and anti-nuclei in pp and Pb-Pb collisions at LHC energies
• Antideuterons as a Signature of Supersymmetric Dark Matter
• Observation of the antimatter helium-4 nucleus
• Measurement of pion, kaon and proton production in proton-proton collisions at $\sqrt{s}=7$ TeV
• Light cluster production in intermediate energy heavy-ion collisions induced by neutron-rich nuclei
• Elliptic flow for phi mesons and (anti)deuterons in Au+Au collisions at sqrt(s_NN) = 200 GeV
• Production of deuterons, tritons, ${}^3$He nuclei and their anti-nuclei in pp collisions at $\sqrt{\text{s}}$ = 0.9, 2.76 and 7 TeV
• Cosmic rays, anti-helium, and an old navy spotlight
• Production of deuterium, tritium, and ${}^3$He in central Pb+Pb collisions at 20A, 30A, 40A, 80A, and 158A GeV at the CERN SPS
• Deuteron and antideuteron production in Au+Au collisions at sqrt(s_NN)=200 GeV
• Antihelium from Dark Matter
• Measurements of Light Nuclei Production in 11.5 A GeV/c Au+Pb Heavy-Ion Collisions
• System size and energy dependence of near-side di-hadron correlations
• Antideuteron and deuteron production in mid-central Pb+Pb collisions at 158$A$ GeV
• Background subtraction methods for precision measurements of di-hadron and jet-hadron correlations in heavy ion collisions
• System size dependence of associated yields in hadron-triggered jets
• Light Fragment Yields from Central Au + Au Collisions at 11.5 A GeV/c
• Results from (anti-)(hyper-)nuclei production and searches for exotic bound states with ALICE at the LHC

Cited by in corpus (5)

• (Anti-)Deuteron production in pp collisions at $\sqrt{s}=13$ TeV
• Jet-associated deuteron production in pp collisions at $\sqrt{s}=13$ TeV
• Momentum dependence of light nuclei production in pp, p-Pb and Pb-Pb collisions at the CERN Large Hadron Collider
• Production characteristics of light (anti-)nuclei from (anti-)nucleon coalescence in heavy ion collisions at energies employed at the RHIC beam energy scan
• Production characteristics of light nuclei, hypertritons and $\Omega$-hypernuclei in Pb+Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV