- Main
Production of light-flavor hadrons in pp collisions at √s=7and√s=13TeV
- Author(s): Acharya, S;
- Adamová, D;
- Adler, A;
- Adolfsson, J;
- Aggarwal, MM;
- Rinella, GA;
- 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;
- Molina, RA;
- 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;
- 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;
- Balbino, A;
- Baldisseri, A;
- Ball, M;
- Balouza, S;
- Banerjee, D;
- 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;
- Bauri, D;
- Alba, JLB;
- Bearden, IG;
- Beattie, C;
- Bedda, C;
- Behera, NK;
- Belikov, I;
- Hechavarria, ADCB;
- 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/s10052-020-08690-5Abstract
The production of π±, K ±, KS0, K ∗(892) , p , ϕ(1020) , Λ , Ξ -, Ω -, and their antiparticles was measured in inelastic proton–proton (pp) collisions at a center-of-mass energy of s = 13 TeV at midrapidity (| y| < 0.5) as a function of transverse momentum (pT) using the ALICE detector at the CERN LHC. Furthermore, the single-particle pT distributions of KS0, Λ , and Λ ¯ in inelastic pp collisions at s=7 TeV are reported here for the first time. The pT distributions are studied at midrapidity within the transverse momentum range 0 ≤ pT≤ 20 GeV/c, depending on the particle species. The pT spectra, integrated yields, and particle yield ratios are discussed as a function of collision energy and compared with measurements at lower s and with results from various general-purpose QCD-inspired Monte Carlo models. A hardening of the spectra at high pT with increasing collision energy is observed, which is similar for all particle species under study. The transverse mass and xT≡2pT/s scaling properties of hadron production are also studied. As the collision energy increases from s = 7–13 TeV, the yields of non- and single-strange hadrons normalized to the pion yields remain approximately constant as a function of s, while ratios for multi-strange hadrons indicate enhancements. The pT-differential cross sections of π±, K ± and p (p ¯) are compared with next-to-leading order perturbative QCD calculations, which are found to overestimate the cross sections for π± and p (p ¯) at high pT.
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