Suppression of charged particle production at large transverse momentum in central Pb–Pb collisions at √sNN = 2.76 TeV
Articolo
Data di Pubblicazione:
2011
Abstract:
Inclusive transverse momentum spectra of primary charged particles in Pb–Pb collisions at √sNN = 2.76 TeV have been measured by the ALICE Collaboration at the LHC. The data are presented for central and peripheral collisions, corresponding to 0–5% and 70–80% of the hadronic Pb–Pb cross section. The measured charged particle spectra in |η| < 0.8 and 0.3 < pT < 20 GeV/c are compared to the expectation in pp collisions at the same
√sNN, scaled by the number of underlying nucleon–nucleon collisions. The comparison is expressed in terms of the nuclear modification factor RAA. The result indicates only weak medium effects (RAA ≈ 0.7) in peripheral collisions. In central collisions, RAA reaches a minimum of about 0.14 at pT = 6–7 GeV/c and increases significantly at larger pT . The measured suppression of
high-pT particles is stronger than that observed at lower collision energies, indicating that a very dense medium is formed in central Pb–Pb collisions at the LHC.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
ALICE; Pb; central collisions
Elenco autori:
K., Aamodt a; A., Abrahantes Quintana b; D., Adamovác; A. M., Adared; M. M., Aggarwal e; G., Aglieri Rinella f; A. G., Agocs g; S., Aguilar Salazar h; Z., Ahammed i; N., Ahmadj; A., Ahmad Masoodi j; S. U., Ahnk; 1, ; A., Akindinov l; D., Aleksandrovm; B., Alessandro n; R., Alfaro Molina h; A., Alici o; 2, ; A., Alkinp; E., Almaráz Aviña h; T., Altq; V., Altini r; S., Altinpinar s; I., Altsybeevt; C., Andrei u; A., Andronic s; V., Anguelov v; 3, 1; C., Anson w; T., Antiˇci ´c x; F., Antinori y; P., Antonioli z; L., Aphecetcheaa; H., Appelshäuser ab; ∗, ; N., Arborac; S., Arcelli o; A., Arendab; N., Armestoad; R., Arnaldi n; T., Aronsson d; I. C., Arsene s; A., Asryant; A., Augustinus f; R., Averbecks; T. C., Awesae; J., Äystöaf; M. D., Azmi j; M., Bachq; A., Badalà ag; Y. W., Baekk; 1, ; S., Bagnascon; R., Bailhache ab; R., Balaah; 5, ; R., Baldini Ferroli ai; A., Baldisseri aj; A., Baldit ak; J., Bánal; R., Barberaam; F., Barile r; G. G., Barnaföldi g; L. S., Barnby an; V., Barretak; J., Bartkeao; M., Basile o; N., Bastidak; B., Bathenap; G., Batigne aa; B., Batyunyaaq; C., Baumannab; I. G., Bearden ar; H., Beck ab; I., Belikovas; F., Bellini o; R., Bellwied at; 6, ; E., Belmont Moreno h; Lea, Ramona; I., Berceanuu; A., Bercuci u; E., Berdermanns; Y., Berdnikovau; L., Betevf; A., Bhasinav; A. K., Bhati e; L., Bianchi ah; N., Bianchi aw; C., Bianchin y; J., Bielˇcík ax; J., Bielˇcíková c; A., Bilandzic ay; E., Biolcati ah; A., Blancak; F., Blanco az; F., Blancoba; D., Blaum; C., Blumeab; M., Boccioli f; N., Bockw; A., Bogdanovbb; H., Bøggild ar; M., Bogolyubsky bc; L., Boldizsárg; M., Bombarabd; C., Bombonati y; J., Book ab; H., Borel aj; C., Bortoliny; 7, ; S., Bose be; F., Bossú ah; M., Botjeay; S., Böttger v; B., Boyerbf; P., Braun Munzinger s; L., Bravina bg; Bregant, Marco; 8, ; T., Breitner v; M., Brozbi; R., Brunf; E., Bruna d; G. E., Bruno r; D., Budnikovbj; H., Buesching ab; O., Busch bk; Z., Buthelezi bl; D., Caffarri y; X., Cai bm; H., Cainesd; E., Calvo Villar bn; Camerini, Paolo; V., Canoa Roman f; 9, 1; G., Cara Romeoz; F., Carenaf; W., Carenaf; F., Carminati f; A., Casanova Díaz aw; M., Caselle f; J., Castillo Castellanos aj; V., Catanescu u; C., Cavicchioli f; P., Cerello n; B., Chang af; S., Chapeland f; J. L., Charvet aj; S., Chattopadhyaybe; S., Chattopadhyayi; M., Cherney bo; C., Cheshkovbp; B., Cheynis bp; E., Chiavassa n; V., Chibante Barroso f; D. D., Chinellato bq; P., Chochulaf; M., Chojnacki br; P., Christakoglou br; C. H., Christensen ar; P., Christiansen bs; T., Chujo bt; C., Cicalo bu; L., Cifarelli o; F., Cindoloz; J., Cleymansbl; F., Coccetti ai; J. P., Coffinas; S., Coli n; G., Conesa Balbastreaw; 11, ; Z., Conesa del Valle aa; 12, ; P., Constantinbk; Contin, Giacomo; J. G., Contrerasbv; T. M., Cormier at; Y., Corrales Morales ah; I., Cortés Maldonado bw; P., Cortese bx; M. R., Cosentino bq; F., Costaf; M. E., Cotallo az; E., Cresciobv; P., Crochetak; E., Cuautle by; L., Cunqueiro aw; G. D., Erasmo r; A., Dainesebz; 13, ; H. H., Dalsgaard ar; A., Danuca; D., Dasbe; I., Dasbe; A., Dashcb; S., Dashn; S., De i; A., De Azevedo Moregula aw; G. O. V., de Barros cc; A., De Carocd; G., de Cataldo ce; J., de Cuveland q; A., De Falco cf; D., De Gruttolacd; N., De Marcon; S., De Pasquale cd; R., De Remigis n; R., de Rooij br; H., Delagrange aa; Y., Delgado Mercado bn; G., Dellacasa bx; 14, ; A., Deloff cg; V., Demanovbj; E., Dénes g; A., Deppman cc; D., Di Bari r; C., Di Giglio r; S., Di Libertoch; A., Di Maurof; P., Di Nezza aw; T., Dietel ap; R., Divià f; Ø., Djuvsland a; A., Dobrin at; 15, ; T., Dobrowolski cg; I., Domínguez by; B., Dönigus s; O., Dordic bg; O., Driga aa; A. K., Dubeyi; J., Dubuisson f; L., Ducroux bp; P., Dupieux ak; A. K., Dutta Majumdar be; M. R., Dutta Majumdar i; D., Eliace; D., Emschermann ap; H., Engel v; H. A., Erdal ci; B., Espagnonbf; M., Estienne aa; S., Esumi bt; D., Evansan; S., Evrard f; G., Eyyubova bg; C. W., Fabjanf; 16,
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