Search for a common baryon source in high-multiplicity pp collisions at the LHC

ALICE Collaboration

Search for a common baryon source in high-multiplicity pp collisions at the LHC

ALICE Collaboration

Research output: Contribution to journal › Article › peer-review

Abstract

We report on the measurement of the size of the particle-emitting source from two-baryon correlations with ALICE in high-multiplicity pp collisions_ at √s = 13 TeV. The source radius is studied with low relative momentum p–p, p–p, p–Λ, and p–Λ pairs as a function of the pair transverse mass m_T considering for the first time in a quantitative way the effect of strong resonance decays. After correcting for this effect, the radii extracted for pairs of different particle species agree. This indicates that protons, antiprotons, Λs, and Λs originate from the same source. Within the measured mT range (1.1–2.2) GeV/c² the invariant radius of this common source varies between 1.3 and 0.85 fm. These results provide a precise reference for studies of the strong hadron–hadron interactions and for the investigation of collective properties in small colliding systems.

Original language	English (US)
Journal	Unknown Journal
State	Published - Apr 16 2020
Externally published	Yes

All Science Journal Classification (ASJC) codes

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@article{a86d3028e53345dba5bdabac53fd5225,

title = "Search for a common baryon source in high-multiplicity pp collisions at the LHC",

abstract = "We report on the measurement of the size of the particle-emitting source from two-baryon correlations with ALICE in high-multiplicity pp collisions_ at √s = 13 TeV. The source radius is studied with low relative momentum p–p, p–p, p–Λ, and p–Λ pairs as a function of the pair transverse mass mT considering for the first time in a quantitative way the effect of strong resonance decays. After correcting for this effect, the radii extracted for pairs of different particle species agree. This indicates that protons, antiprotons, Λs, and Λs originate from the same source. Within the measured mT range (1.1–2.2) GeV/c2 the invariant radius of this common source varies between 1.3 and 0.85 fm. These results provide a precise reference for studies of the strong hadron–hadron interactions and for the investigation of collective properties in small colliding systems.",

author = "{ALICE Collaboration} and S. Acharya and D. Adamov{\'a} and A. Adler and J. Adolfsson and Aggarwal, {M. M.} and {Aglieri Rinella}, G. and M. Agnello and N. Agrawal and Z. Ahammed and S. Ahmad and Ahn, {S. U.} and Z. Akbar and A. Akindinov and M. Al-Turany and Alam, {S. N.} and Albuquerque, {D. S.D.} and D. Aleksandrov and B. Alessandro and Alfanda, {H. M.} and {Alfaro Molina}, R. and B. Ali and Y. Ali and A. Alici and A. Alkin and J. Alme and T. Alt and L. Altenkamper and I. Altsybeev and Anaam, {M. N.} and C. Andrei and D. Andreou and Andrews, {H. A.} and A. Andronic and M. Angeletti and V. Anguelov and C. Anson and T. Anti{\v c}i{\'c} and F. Antinori and P. Antonioli and N. Apadula and L. Aphecetche and H. Appelsh{\"a}user and S. Arcelli and R. Arnaldi and M. Arratia and Arsene, {I. C.} and M. Arslandok and A. Augustinus and R. Averbeck and Seger, {J. E.}",

year = "2020",

month = apr,

day = "16",

language = "English (US)",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier",

}

TY - JOUR

T1 - Search for a common baryon source in high-multiplicity pp collisions at the LHC

AU - ALICE Collaboration

AU - Acharya, S.

AU - Adamová, D.

AU - Adler, A.

AU - Adolfsson, J.

AU - Aggarwal, M. M.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, S.

AU - Ahn, S. U.

AU - Akbar, Z.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Alam, S. N.

AU - Albuquerque, D. S.D.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfanda, H. M.

AU - Alfaro Molina, R.

AU - Ali, B.

AU - Ali, Y.

AU - Alici, A.

AU - Alkin, A.

AU - Alme, J.

AU - Alt, T.

AU - Altenkamper, L.

AU - Altsybeev, I.

AU - Anaam, M. N.

AU - Andrei, C.

AU - Andreou, D.

AU - Andrews, H. A.

AU - Andronic, A.

AU - Angeletti, M.

AU - Anguelov, V.

AU - Anson, C.

AU - Antičić, T.

AU - Antinori, F.

AU - Antonioli, P.

AU - Apadula, N.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arcelli, S.

AU - Arnaldi, R.

AU - Arratia, M.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Seger, J. E.

PY - 2020/4/16

Y1 - 2020/4/16

N2 - We report on the measurement of the size of the particle-emitting source from two-baryon correlations with ALICE in high-multiplicity pp collisions_ at √s = 13 TeV. The source radius is studied with low relative momentum p–p, p–p, p–Λ, and p–Λ pairs as a function of the pair transverse mass mT considering for the first time in a quantitative way the effect of strong resonance decays. After correcting for this effect, the radii extracted for pairs of different particle species agree. This indicates that protons, antiprotons, Λs, and Λs originate from the same source. Within the measured mT range (1.1–2.2) GeV/c2 the invariant radius of this common source varies between 1.3 and 0.85 fm. These results provide a precise reference for studies of the strong hadron–hadron interactions and for the investigation of collective properties in small colliding systems.

AB - We report on the measurement of the size of the particle-emitting source from two-baryon correlations with ALICE in high-multiplicity pp collisions_ at √s = 13 TeV. The source radius is studied with low relative momentum p–p, p–p, p–Λ, and p–Λ pairs as a function of the pair transverse mass mT considering for the first time in a quantitative way the effect of strong resonance decays. After correcting for this effect, the radii extracted for pairs of different particle species agree. This indicates that protons, antiprotons, Λs, and Λs originate from the same source. Within the measured mT range (1.1–2.2) GeV/c2 the invariant radius of this common source varies between 1.3 and 0.85 fm. These results provide a precise reference for studies of the strong hadron–hadron interactions and for the investigation of collective properties in small colliding systems.

UR - http://www.scopus.com/inward/record.url?scp=85095331246&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85095331246&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:85095331246

JO - Nuclear Physics A

JF - Nuclear Physics A

SN - 0375-9474

ER -