Scattering studies with low-energy kaon-proton femtoscopy in proton-proton collisions at the LHC
Authors:
- S. Acharya,
- Daniel Dąbrowski,
- Kamil Deja,
- Łukasz Graczykowski,
- Monika Jakubowska,
- Małgorzata Janik,
- Przemysław Karczmarczyk,
- Adam Kisiel,
- Julian Myrcha,
- Piotr Nowakowski,
- Janusz Oleniacz,
- Jan Pluta,
- Przemysław Rokita,
- Krystian Rosłon,
- Tomasz Trzciński,
- Hanna Zbroszczyk
Abstract
The study of the strength and behavior of the antikaon-nucleon ( ̄KN) interaction constitutes one of thekey focuses of the strangeness sector in low-energy quantum chromodynamics (QCD). In this Letter aunique high-precision measurement of the strong interaction between kaons and protons, close and abovethe kinematic threshold, is presented. The femtoscopic measurements of the correlation function at lowpair-frame relative momentum of (Kþp⊕K− ̄p) and (K−p⊕Kþ ̄p) pairs measured inppcollisions atffiffiffisp¼5, 7, and 13 TeVare reported. A structure observed around a relative momentum of58MeV=cin themeasured correlation function of (K−p⊕Kþ ̄p) with a significance of4.4σconstitutes the firstexperimental evidence for the opening of theð ̄K0n⊕K0 ̄nÞisospin breaking channel due to the massdifference between charged and neutral kaons. The measured correlation functions have been compared toJülich and Kyoto models in addition to the Coulomb potential. The high-precision data at low relativemomenta presented in this work prove femtoscopy to be a powerful complementary tool to scatteringexperiments and provide new constraints above the ̄KNthreshold for low-energy QCD chiral models
- Record ID
- WUT5d0aa4f660594f89937e2ee29c62093c
- Author
- Total number of authors
- 1026
- Collective author
- The ALICE Collaboration
- Journal series
- Physical Review Letters, ISSN 0031-9007, e-ISSN 1079-7114
- Issue year
- 2020
- Vol
- 124
- No
- 9
- Pages
- 1-13
- Publication size in sheets
- 1.45
- Article number
- 092301
- Keywords in English
- QCD ; experimental results ; femtoscopy
- ASJC Classification
- DOI
- DOI:10.1103/PhysRevLett.124.092301 Opening in a new tab
- URL
- https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.124.092301 Opening in a new tab
- Language
- (en) English
- Score (nominal)
- 200
- Score source
- journalList
- Score
- = 200.0, 03-05-2022, ArticleFromJournal
- Publication indicators
- = 10; = 40; = 14; : 2017 = 2.464; : 2020 (2 years) = 9.161 - 2020 (5 years) =9.044
- Citation count
- 41
- Uniform Resource Identifier
- https://repo.pw.edu.pl/info/article/WUT5d0aa4f660594f89937e2ee29c62093c/
- URN
urn:pw-repo:WUT5d0aa4f660594f89937e2ee29c62093c
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or PerishOpening in a new tab system.