Study of the deuterons emission time in pp collisions at the LHC via kaon-deuteron correlations

Abstract

The femtoscopy correlation between positively charged kaons and deuterons measured in pp collisions at $\sqrt{s}=$ 13 TeV at the LHC with the ALICE experiment is employed to determine the upper limit for the time delay of the deuteron emission with respect to all other hadrons. Two scenarios are considered: the first assumes that deuterons form following the decays of short-lived strong resonances, while the second assumes that deuteron production occurs simultaneously with all other primary hadrons. For both scenarios, an additional delay time can be introduced using the CECA source model and its upper limit can be extracted by fitting the femtoscopy correlation. Two models are considered for the strong K${}^{+}$d final state interaction. For the scenario where deuterons production is affected by baryonic resonances the upper limit of the time delay is 2.25 fm/c, while for the primary production scenario the upper limit is 4.75 fm/c. These results support the hypothesis of an early formation of the deuteron as an extended, weakly bound composite object in ultra-relativistic proton-proton collisions at the LHC.

References in corpus (39)

• Decoding the phase structure of QCD via particle production at high energy
• Femtoscopy in Relativistic Heavy Ion Collisions: Two Decades of Progress
• 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
• Unveiling the strong interaction among hadrons at the LHC
• Observation of the antimatter helium-4 nucleus
• Thermal-FIST: A package for heavy-ion collisions and hadronic equation of state
• p-p, p-$\Lambda$ and $\Lambda$-$\Lambda$ correlations studied via femtoscopy in pp reactions at $\sqrt{s}$ = 7 TeV
• First observation of an attractive interaction between a proton and a multi-strange baryon
• Antimatter production in proton-proton and heavy-ion collisions at ultrarelativistic energies
• Chiral unitary approach to the K^- deuteron scattering length
• Beam energy dependence of (anti-)deuteron production in Au+Au collisions at RHIC
• Search for a common baryon source in high-multiplicity pp collisions at the LHC
• Bose-Einstein correlations for Levy stable source distributions
• Canonical statistical model analysis of p-p, p-Pb, and Pb-Pb collisions at the LHC
• Scattering studies with low-energy kaon-proton femtoscopy in proton-proton collisions at the LHC
• Hadron Production and Phase Changes in Relativistic Heavy Ion Collisions
• Investigation of the p-${\Sigma }^0$ interaction via femtoscopy in pp collisions
• A femtoscopic Correlation Analysis Tool using the Schrödinger equation (CATS)
• Centrality dependence of hadronization and chemical freeze-out conditions in heavy ion collisions at \sqrt s_{NN} = 2.76 TeV
• Deuteron and antideuteron production in Au+Au collisions at sqrt(s_NN)=200 GeV
• Production of Strange Clusters and Strange Matter in Nucleus-Nucleus Collisions at the AGS
• First study of the two-body scattering involving charm hadrons
• A Comparison of p-p, p-Pb, Pb-Pb Collisions in the Thermal Model: Multiplicity Dependence of Thermal Parameters
• Production of Light Nuclei in Heavy Ion Collisions Within Multiple Freezeout Scenario
• (Anti-)Deuteron production in pp collisions at $\sqrt{s}=13$ TeV
• Antideuteron yield at the AGS and coalescence implications
• Multiplicity dependence of (anti-)deuteron production in pp collisions at $\sqrt{s}$ = 7 TeV
• Alternative coalescence model for deuteron, tritium, helium-3 and their antinuclei
• Studying the interaction between charm and light-flavor mesons
• First measurement of the $\Lambda$-$\Xi$ interaction in proton-proton collisions at the LHC
• A realistic coalescence model for deuteron production
• Rapidity dependence of deuteron production in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV
• Novel model for particle emission in small collision systems
• On nuclear coalescence in small interacting systems
• First measurement of antideuteron number fluctuations at energies available at the Large Hadron Collider
• Femtoscopic correlations of identical charged pions and kaons in pp collisions at $\sqrt{s}=13$ TeV with event-shape selection
• KN scattering amplitude revisited in a chiral unitary approach and a possible broad resonance in S=+1 channel
• Optical Potential Approach to $K^{+}d$ Scattering at Low Energies

Cited by in corpus (2)

• Kaon-deuteron femtoscopy from unitarized chiral interactions
• Femtoscopic study of the proton-proton and proton-deuteron systems in heavy-ion collisions at the LHC