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Measurement of Z0-boson production at large rapidities in Pb–Pb collisions at √sNN = 5.02 TeV

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  • معلومة اضافية
    • Contributors:
      Acharya, S.; Adamová, D.; Adolfsson, J.; Aggarwal, M.M.; Aglieri Rinella, G.; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahn, S.U.; Aiola, S.; Akindinov, A.; Al-Turany, M.; Alam, S.N.; Albuquerque, D.S.D.; 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, H.A.; Andronic, A.; Angeletti, M.; Anguelov, V.; Anson, C.; Antičić, T.; Antinori, F.; Antonioli, P.; Apadula, N.; Aphecetche, L.; Appelshäuser, H.; Arcelli, S.; Arnaldi, R.; Arnold, O.W.; Arsene, I.C.; Arslandok, M.; Audurier, B.; Augustinus, A.; Averbeck, R.; Azmi, M.D.; Badalà, A.; Baek, Y.W.; Bagnasco, S.; Bailhache, R.; Bala, R.; Baldisseri, A.; Ball, M.; Baral, R.C.; Barbano, A.M.; Barbera, R.; Barile, F.; Barioglio, L.; Barnaföldi, G.G.; Barnby, L.S.; Barret, V.; Bartalini, P.; Barth, K.; Bartsch, E.; Bastid, N.; Basu, S.; Batigne, G.; Batyunya, B.; Batzing, P.C.; Bazo Alba, J.L.; Bearden, I.G.; Beck, H.; Bedda, C.; Behera, N.K.; Belikov, I.; Bellini, F.; Bello Martinez, H.; Bellwied, R.; Beltran, L.G.E.; Belyaev, V.; Bencedi, G.; Beole, S.; Bercuci, A.; Berdnikov, Y.; Berenyi, D.; Bertens, R.A.; Berzano, D.; Betev, L.; Bhaduri, P.P.; Bhasin, A.; Bhat, I.R.; Bhattacharjee, B.; Bhom, J.; Bianchi, A.; Bianchi, L.; Bianchi, N.; Bianchin, C.; Bielčík, J.; Bielčíková, J.; Bilandzic, A.
    • الموضوع:
      2018
    • Collection:
      IRIS Università degli Studi di Bologna (CRIS - Current Research Information System)
    • نبذة مختصرة :
      The production of Z0 bosons at large rapidities in Pb–Pb collisions at √sNN = 5.02 TeV is reported. Z0 candidates are reconstructed in the dimuon decay channel (Z0 → μ+ μ−), based on muons selected with pseudo-rapidity −4.0 < η < −2.5 and pT > 20 GeV/c. The invariant yield and the nuclear modification factor, RAA, are presented as a function of rapidity and collision centrality. The value of RAA for the 0–20% central Pb–Pb collisions is 0.67 ± 0.11 (stat.) ± 0.03 (syst.) ± 0.06 (corr. syst.), exhibiting a deviation of 2.6σ from unity. The results are well-described by calculations that include nuclear modifications of the parton distribution functions, while the predictions using vacuum PDFs deviate from data by 2.3σ in the 0–90% centrality class and by 3σ in the 0–20% central collisions.
    • File Description:
      STAMPA
    • Relation:
      info:eu-repo/semantics/altIdentifier/wos/WOS:000432187800058; volume:780; firstpage:372; lastpage:383; numberofpages:12; journal:PHYSICS LETTERS. SECTION B; http://hdl.handle.net/11585/664025; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85044134122; https://www.sciencedirect.com/science/article/pii/S0370269318301977?via=ihub
    • الرقم المعرف:
      10.1016/j.physletb.2018.03.010
    • Rights:
      info:eu-repo/semantics/openAccess
    • الرقم المعرف:
      edsbas.2920BB4B