Measurement of D0, D+, D*+ and D s+ production in Pb-Pb collisions at √sNN=5.02 TeV
- Author(s): Acharya, S;
- Acosta, FT;
- Adamová, D;
- Adolfsson, J;
- Aggarwal, MM;
- Aglieri Rinella, G;
- Agnello, M;
- Agrawal, N;
- Ahammed, Z;
- Ahn, SU;
- Aiola, S;
- Akindinov, A;
- Al-Turany, M;
- Alam, SN;
- Albuquerque, DSD;
- Aleksandrov, D;
- Alessandro, B;
- Alfaro Molina, R;
- Ali, Y;
- Alici, A;
- Alkin, A;
- Alme, J;
- Alt, T;
- Altenkamper, L;
- Altsybeev, I;
- 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;
- Arnold, OW;
- Arsene, IC;
- Arslandok, M;
- Audurier, B;
- Augustinus, A;
- Averbeck, R;
- Azmi, MD;
- Badalà, A;
- Baek, YW;
- Bagnasco, S;
- Bailhache, R;
- Bala, R;
- Baldisseri, A;
- Ball, M;
- Baral, RC;
- Barbano, AM;
- Barbera, R;
- Barile, F;
- Barioglio, L;
- Barnaföldi, GG;
- Barnby, LS;
- Barret, V;
- Bartalini, P;
- Barth, K;
- Bartsch, E;
- Bastid, N;
- Basu, S;
- Batigne, G;
- Batyunya, B;
- Batzing, PC;
- Bazo Alba, JL;
- Bearden, IG;
- Beck, H;
- Bedda, C;
- Behera, NK;
- Belikov, I;
- Bellini, F;
- Bello Martinez, H;
- Bellwied, R;
- Beltran, LGE;
- Belyaev, V;
- Bencedi, G;
- Beole, S;
- Bercuci, A;
- Berdnikov, Y;
- Berenyi, D;
- Bertens, RA;
- Berzano, D;
- Betev, L;
- Bhaduri, PP;
- Bhasin, A;
- Bhat, IR;
- Bhatt, H;
- Bhattacharjee, B;
- Bhom, J;
- Bianchi, A;
- Bianchi, L;
- Bianchi, N;
- Bielčík, J
- et al.
Abstract
We report measurements of the production of prompt D0, D+, D*+ and Ds+ mesons in Pb–Pb collisions at the centre-of-mass energy per nucleon-nucleon pair sNN=5.02 TeV, in the centrality classes 0–10%, 30–50% and 60–80%. The D-meson production yields are measured at mid-rapidity (|y| < 0.5) as a function of transverse momentum (pT). The pT intervals covered in central collisions are: 1 < pT< 50 GeV/c for D0, 2 < pT< 50GeV/c for D+, 3 < pT< 50GeV/c for D*+, and 4 < pT< 16GeV/c for Ds+ mesons. The nuclear modification factors (RAA) for non-strange D mesons (D0, D+, D*+) show minimum values of about 0.2 for pT = 6–10 GeV/c in the most central collisions and are compatible within uncertainties with those measured at sNN=2.76 TeV. For Ds+ mesons, the values of RAA are larger than those of non-strange D mesons, but compatible within uncertainties. In central collisions the average RAA of non-strange D mesons is compatible with that of charged particles for pT> 8 GeV/c, while it is larger at lower pT. The nuclear modification factors for strange and non-strange D mesons are also compared to theoretical models with different implementations of in-medium energy loss.[Figure not available: see fulltext.]