Measurements of inclusive jet spectra in pp and central Pb-Pb collisions at sNN=5.02TeV

S. Acharya,D. Adamová, A. Adler,J. Adolfsson, M. M. Aggarwal,G. Aglieri Rinella,M. Agnello, N. Agrawal, Z. Ahammed,S. Ahmad,S. U. Ahn,A. Akindinov,M. Al-Turany,S. N. Alam, D. S. D. Albuquerque,D. Aleksandrov, B. Alessandro,H. M. Alfanda,R. Alfaro Molina,B. Ali,Y. Ali, A. Alici,A. Alkin, J. Alme, T. Alt,L. Altenkamper,I. Altsybeev,M. N. Anaam,C. Andrei,D. Andreou,H. A. Andrews, A. Andronic,M. Angeletti, V. Anguelov,C. Anson,T. Antičić, F. Antinori,P. Antonioli, R. Anwar,N. Apadula, L. Aphecetche, H. Appelshäuser, S. Arcelli,R. Arnaldi,M. Arratia,I. C. Arsene, M. Arslandok,A. Augustinus, R. Averbeck,S. Aziz,M. D. Azmi,A. Badalà,Y. W. Baek, S. Bagnasco, X. Bai, R. Bailhache,R. Bala, A. Baldisseri,M. Ball,S. Balouza,R. Barbera,L. Barioglio,G. G. Barnaföldi, L. S. Barnby, V. Barret, P. Bartalini,K. Barth,E. Bartsch, F. Baruffaldi, N. Bastid,S. Basu,G. Batigne,B. Batyunya,D. Bauri,J. L. Bazo Alba, I. G. Bearden,C. Bedda,N. K. Behera, I. Belikov,A. D. C. Bell Hechavarria,F. Bellini, R. 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arxiv(2020)

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摘要
This article reports measurements of the p(T)-differential inclusive jet cross section in pp collisions at root S = 5.02 TeV and the p(T)-differential inclusive jet yield in Pb-Pb 0-10% central collisions at root S-NN = 5.02 TeV. Jets were reconstructed at midrapidity with the ALICE tracking detectors and electromagnetic calorimeter using the anti-k(T) algorithm. For pp collisions, we report jet cross sections for jet resolution parameters R = 0.1-0.6 over the range 20 < p(T,jet) < 140 GeV/c, as well as the jet cross-section ratios of different R and comparisons to two next-to-leading-order (NLO)-based theoretical predictions. For Pb-Pb collisions, we report the R = 0.2 and R = 0.4 jet spectra for 40 < p(T,jet) < 140 GeV/c and 60 < p(T,jet) < 140 GeV/c, respectively. The scaled ratio of jet yields observed in Pb-Pb to pp collisions, R-AA, is constructed, and exhibits strong jet quenching and a clear p(T) dependence for R = 0.2. No significant R dependence of the jet R-AA is observed within the uncertainties of the measurement. These results are compared to several theoretical predictions.
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inclusive jet spectra
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