- Main
Centrality and transverse momentum dependence of inclusive J/ψ production at midrapidity in Pb–Pb collisions at sNN=5.02 TeV
- Author(s): Acharya, S;
- Adamová, D;
- 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;
- 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;
- Bazo Alba, JL;
- Bearden, IG;
- Bedda, C;
- Behera, NK;
- Belikov, I;
- Bell Hechavarria, ADC;
- 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;
- Bianchi, L;
- Bianchi, N
- et al.
Published Web Location
https://doi.org/10.1016/j.physletb.2020.135434Abstract
The inclusive J/ψ meson production in Pb–Pb collisions at a center-of-mass energy per nucleon–nucleon collision of sNN=5.02 TeV at midrapidity (|y|<0.9) is reported by the ALICE Collaboration. The measurements are performed in the dielectron decay channel, as a function of event centrality and J/ψ transverse momentum pT, down to pT=0. The J/ψ mean transverse momentum 〈pT〉 and rAA ratio, defined as 〈pT2〉PbPb/〈pT2〉pp, are evaluated. Both observables show a centrality dependence decreasing towards central (head-on) collisions. The J/ψ nuclear modification factor RAA exhibits a strong pT dependence with a large suppression at high pT and an increase to unity for decreasing pT. When integrating over the measured momentum range pT<10 GeV/c, the J/ψ RAA shows a weak centrality dependence. Each measurement is compared with results at lower center-of-mass energies and with ALICE measurements at forward rapidity, as well as to theory calculations. All reported features of the J/ψ production at low pT are consistent with a dominant contribution to the J/ψ yield originating from charm quark (re)combination.
Main Content
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