- Main
Multiplicity dependence of (multi-)strange hadron production in proton-proton collisions at √s = 13 TeV
- Author(s): Acharya, S;
- Adamová, D;
- Adhya, SP;
- Adler, A;
- Adolfsson, J;
- Aggarwal, MM;
- Aglieri Rinella, G;
- Agnello, M;
- Agrawal, N;
- Ahammed, Z;
- Ahmad, S;
- Ahn, SU;
- Akindinov, A;
- Al-Turany, M;
- Alam, SN;
- Albuquerque, DSD;
- Aleksandrov, D;
- Alessandro, B;
- Alfanda, HM;
- Alfaro Molina, R;
- Ali, B;
- Ali, Y;
- Alici, A;
- Alkin, A;
- Alme, J;
- Alt, T;
- Altenkamper, L;
- Altsybeev, I;
- Anaam, MN;
- Andrei, C;
- Andreou, D;
- Andrews, HA;
- Andronic, A;
- Angeletti, M;
- Anguelov, V;
- Anson, C;
- Antičić, T;
- Antinori, F;
- Antonioli, P;
- Anwar, R;
- Apadula, N;
- Aphecetche, L;
- Appelshäuser, H;
- Arcelli, S;
- Arnaldi, R;
- Arratia, M;
- Arsene, IC;
- Arslandok, M;
- Augustinus, A;
- Averbeck, R;
- Aziz, S;
- Azmi, MD;
- Badalà, A;
- Baek, YW;
- Bagnasco, S;
- Bai, X;
- Bailhache, R;
- Bala, R;
- Baldisseri, A;
- Ball, M;
- Balouza, S;
- Baral, RC;
- Barbera, R;
- Barioglio, L;
- Barnaföldi, GG;
- Barnby, LS;
- Barret, V;
- Bartalini, P;
- Barth, K;
- Bartsch, E;
- Baruffaldi, F;
- Bastid, N;
- Basu, S;
- Batigne, G;
- Batyunya, B;
- Batzing, PC;
- Bauri, D;
- Bazo Alba, JL;
- Bearden, IG;
- Bedda, C;
- Behera, NK;
- Belikov, I;
- Bellini, F;
- Bellwied, R;
- Belyaev, V;
- Bencedi, G;
- Beole, S;
- Bercuci, A;
- Berdnikov, Y;
- Berenyi, D;
- Bertens, RA;
- Berzano, D;
- Besoiu, MG;
- Betev, L;
- Bhasin, A;
- Bhat, IR;
- Bhat, MA;
- Bhatt, H;
- Bhattacharjee, B;
- Bianchi, A
- et al.
Published Web Location
https://doi.org/10.1140/epjc/s10052-020-7673-8Abstract
The production rates and the transverse momentum distribution of strange hadrons at mid-rapidity (| y| < 0.5) are measured in proton-proton collisions at s = 13 TeV as a function of the charged particle multiplicity, using the ALICE detector at the LHC. The production rates of KS0, Λ , Ξ , and Ω increase with the multiplicity faster than what is reported for inclusive charged particles. The increase is found to be more pronounced for hadrons with a larger strangeness content. Possible auto-correlations between the charged particles and the strange hadrons are evaluated by measuring the event-activity with charged particle multiplicity estimators covering different pseudorapidity regions. When comparing to lower energy results, the yields of strange hadrons are found to depend only on the mid-rapidity charged particle multiplicity. Several features of the data are reproduced qualitatively by general purpose QCD Monte Carlo models that take into account the effect of densely-packed QCD strings in high multiplicity collisions. However, none of the tested models reproduce the data quantitatively. This work corroborates and extends the ALICE findings on strangeness production in proton-proton collisions at 7 TeV.
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