Experimental evidence for an attractive p-$\varphi$ interaction

Abstract

This Letter presents the first experimental evidence of the attractive strong interaction between a proton and a $\varphi$ meson. The result is obtained from two-particle correlations of combined p-$\varphi \oplus \overline{\mathrm{p}}$-$\varphi$ pairs measured in high-multiplicity pp collisions at $\sqrt{s}=13$ TeV by the ALICE collaboration. The spin-averaged scattering length and effective range of the p-$\varphi$ interaction are extracted from the fully corrected correlation function employing the Lednický-Lyuboshits approach. In particular, the imaginary part of the scattering length vanishes within uncertainties, indicating that inelastic processes do not play a prominent role for the p-$\varphi$ interaction. These data demonstrate that the interaction is dominated by elastic p-$\varphi$ scattering. Furthermore, an analysis employing phenomenological Gaussian- and Yukawa-type potentials is conducted. Under the assumption of the latter, the N-$\varphi$ coupling constant is found to be $g_{\mathrm{N}-\varphi }=0.14\pm 0.03(stat.)\pm 0.02(syst.)$. This work provides valuable experimental input to accomplish a self-consistent description of the N-$\varphi$ interaction, which is particularly relevant for the more fundamental studies on partial restoration of chiral symmetry in nuclear medium.

arXiv comment18 pages, 2 captioned figure, 1 tables, authors from page 12, published version, figures at http://alice-publications.web.cern.ch/node/7086

References in corpus (46)

• An Introduction to PYTHIA 8.2
• Performance of the ALICE Experiment at the CERN LHC
• The ALICE TPC, a large 3-dimensional tracking device with fast readout for ultra-high multiplicity events
• Femtoscopy in Relativistic Heavy Ion Collisions: Two Decades of Progress
• Performance of the ALICE VZERO system
• First Measurement of the rho Spectral Function in High-Energy Nuclear Collisions
• Current correlation functions, QCD sum rules and vector mesons in baryonic matter
• Strangeness in Nuclei and Neutron Stars
• Unveiling the strong interaction among hadrons at the LHC
• Evidence for in-medium modification of the $\varphi$ meson at normal nuclear density
• Hadrons in strongly interacting matter
• phi photo-production from Li, C, Al, and Cu nuclei at Egamma=1.5 - 2.4 GeV
• Study of the strong interaction among hadrons with correlations at the LHC
• p-p, p-$\Lambda$ and $\Lambda$-$\Lambda$ correlations studied via femtoscopy in pp reactions at $\sqrt{s}$ = 7 TeV
• Femtoscopy of pp collisions at $\sqrt{s}$=0.9 and 7 TeV at the LHC with two-pion Bose-Einstein correlations
• Production of K${}^{\ast }$(892)${}^0$ and $\varphi$(1020) in pp collisions at $\sqrt{s}=7$ TeV
• First observation of an attractive interaction between a proton and a multi-strange baryon
• Study of the $\Lambda$-$\Lambda$ interaction with femtoscopy correlations in pp and p-Pb collisions at the LHC
• Modification of the $\varphi$-meson spectrum in nuclear matter
• Search for a common baryon source in high-multiplicity pp collisions at the LHC
• Dielectron production in Ar+KCl collisions at 1.76A GeV
• Scattering studies with low-energy kaon-proton femtoscopy in proton-proton collisions at the LHC
• Dielectron Mass Spectra from Au+Au Collisions at $\sqrt{s_{\mathrm{NN}}}$ = 200 GeV
• Investigation of the p-${\Sigma }^0$ interaction via femtoscopy in pp collisions
• Two-pion femtoscopy in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• A femtoscopic Correlation Analysis Tool using the Schrödinger equation (CATS)
• Coupled-channel effects in hadron-hadron correlation functions
• Absorption of the $\omega$ and $\varphi$ Mesons in Nuclei
• Measurement of the in-medium phi-meson width in proton-nucleus collisions
• Evaluation of QCD sum rules for light vector mesons at finite density and temperature
• $K^{-}p$ Correlation Function from High-Energy Nuclear Collisions and Chiral SU(3) Dynamics
• Transverse sphericity of primary charged particles in minimum bias proton-proton collisions at $\sqrt{s}=0.9$, 2.76 and 7 TeV
• Phi^{zero}-N Bound State
• QCD sum rules for ρ, ω, ϕmeson-nucleon scattering lengths and the mass shifts in nuclear medium
• Insight into particle production mechanisms via angular correlations of identified particles in pp collisions at $\sqrt{s}=7$ TeV
• Multiplicity dependence of jet-like two-particle correlations in p-Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV
• Phi meson spectral moments and QCD condensates in nuclear matter
• Forward coherent $\varphi$-meson photoproduction from deuterons near threshold
• Comparative analysis of $\omega p$, $\varphi p$, and $J/\psi p$ scattering lengths from A2, CLAS, and GlueX threshold measurements
• $\varphi$ meson self-energy in nuclear matter from $\varphi N$ resonant interactions
• Strong absorption of hadrons with hidden and open strangeness in nuclear matter
• ${\mathrm{K}}^{\ast }(892{)}^0$ and $\varphi (1020)$ production at midrapidity in pp collisions at $\sqrt{s}$ = 8 TeV
• $\varphi$ meson transparency in nuclei from $\varphi N$ resonant interactions
• Possible Existence of Charmonium-Nucleus Bound States
• Comments on differential cross section of phi-meson photoproduction at threshold
• Event-shape and multiplicity dependence of freeze-out radii in pp collisions at $\sqrt{\text{s}}=7$ TeV

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