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
© 2018, The Author(s). 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.]