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 - Bedda, C.
AU - Christakoglou, P.
AU - Dubla, A.
AU - Grelli, A.
AU - Jaelani, S.
AU - Khabanova, Z.
AU - Kuijer, P. G.
AU - Margutti, J.
AU - Mohanty, A. P.
AU - Peitzmann, T.
AU - Qiu, S.
AU - Sas, M. H.P.
AU - Snellings, R. J.M.
AU - Trzeciak, B. A.
AU - van der Kolk, N.
AU - van Doremalen, L. V.R.
AU - van Leeuwen, M.
AU - Vermunt, L.
AU - Yokoyama, H.
AU - Correia Zanoli, H.J.
AU - Ravasenga, I.
PY - 2020/12/10
Y1 - 2020/12/10
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, Λ s, and Λ‾ s originate from the same source. Within the measured mT range (1.1–2.2) GeV/c2the 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, Λ s, and Λ‾ s originate from the same source. Within the measured mT range (1.1–2.2) GeV/c2the 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=85093678392&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2020.135849
DO - 10.1016/j.physletb.2020.135849
M3 - Article
AN - SCOPUS:85093678392
SN - 0370-2693
VL - 811
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
M1 - 135849
ER -