Production of charged pions, kaons and protons at large transverse momenta in pp and Pb–Pb collisions at √sNN = 2.76 TeV
Articolo
Data di Pubblicazione:
2014
Abstract:
Transverse momentum spectra of π±, K± and p(p ̄) up to pT = 20 GeV/c at mid-rapidity in pp, peripheral (60–80%) and central (0–5%) Pb–Pb collisions at √sNN = 2.76 TeV have been measured using the ALICE detector at the Large Hadron Collider. The proton-to-pion and the kaon-to-pion ratios both show a distinct peak at pT ≈ 3 GeV/c in central Pb–Pb collisions. Below the peak, pT < 3 GeV/c, both ratios are in good agreement with hydrodynamical calculations, suggesting that the peak itself is dominantly the result of radial flow rather than anomalous hadronization processes. For pT > 10 GeV/c particle ratios in pp and Pb–Pb collisions are in agreement and the nuclear modification factors for π±, K± and p(p ̄) indicate that, within the systematic and statistical uncertainties, the suppression is the same. This suggests that the chemical composition of leading particles from jets in the medium is similar to that of vacuum jets.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
Identified particle production; High pT; Particle ratios; Baryon anomaly; Nuclear modification factor; ALICE; LHC
Elenco autori:
Piano, Stefano; Lea, Ramona; Camerini, Paolo; Luparello, Grazia; Margagliotti, Giacomo; Rui, Rinaldo; B., Abelev bt; J., Adam ak; D., Adamová cb; M. M., Aggarwal cf; G., Aglieri Rinella ah; M., Agnello cm; Dd, ; A., Agostinelli z; N., Agrawal ar; Z., Ahammed dw; N., Ahmad r; A., Ahmad Masoodi r; I., Ahmed o; S. U., Ahn bm; S. A., Ahn bm; I., Aimo cm; Dd, ; S., Aiola eb; M., Ajaz o; A., Akindinov bc; D., Aleksandrov cs; B., Alessandro dd; D., Alexandre cu; A., Alici cx; L, ; A., Alkin c; J., Alme ai; T., Alt am; V., Altini ae; S., Altinpinar q; I., Altsybeev dv; C., Alves Garcia Prado dl; C., Andrei bw; A., Andronic cp; V., Anguelov cl; J., Anielski ay; T., Anticˇic ́ cq; F., Antinori da; P., Antonioli cx; L., Aphecetche df; H., Appelshäuser aw; N., Arbor bp; S., Arcelli z; N., Armesto p; R., Arnaldi dd; T., Aronsson eb; I. C., Arsene u; Cp, ; M., Arslandok aw; A., Augustinus ah; R., Averbeck cp; T. C., Awes cc; M. D., Azmi r; Ch, ; M., Bach am; A., Badalà cz; Y. W., Baek an; Bo, ; S., Bagnasco dd; R., Bailhache aw; V., Bairathi cj; R., Bala ci; A., Baldisseri n; F., Baltasar Dos Santos Pedrosa ah; J., Bán bd; R. C., Baral bf; R., Barbera aa; F., Barile ae; G. G., Barnaföldi ea; L. S., Barnby cu; V., Barret bo; J., Bartke di; M., Basile z; N., Bastid bo; S., Basu dw; B., Bathen ay; G., Batigne df; B., Batyunya bk; P. C., Batzing u; C., Baumann aw; I. G., Bearden by; H., Beck aw; C., Bedda cm; N. K., Behera ar; I., Belikov az; F., Bellini z; R., Bellwied dn; E., Belmont Moreno bi; G., Bencedi ea; S., Beole y; I., Berceanu bw; A., Bercuci bw; Y., Berdnikov cd; 1, ; D., Berenyi ea; M. E., Berger ck; R. A., Bertens bb; D., Berzano y; L., Betev ah; A., Bhasin ci; A. K., Bhati cf; B., Bhattacharjee ao; J., Bhom ds; L., Bianchi y; N., Bianchi bq; C., Bianchin bb; J., Bielcˇík ak; J., Bielcˇíková cb; A., Bilandzic by; S., Bjelogrlic bb; F., Blanco j; D., Blau cs; C., Blume aw; F., Bock cl; Bs, ; A., Bogdanov bu; H., Bøggild by; M., Bogolyubsky de; F. V., Böhmer ck; L., Boldizsár ea; M., Bombara al; J., Book aw; H., Borel n; A., Borissov dz; Co, ; J., Bornschein am; F., Bossú bj; M., Botje bz; E., Botta y; S., Böttger av; P., Braun Munzinger cp; M., Bregant dl; T., Breitner av; T. A., Broker aw; T. A., Browning cn; M., Broz aj; Ak, ; E., Bruna dd; G. E., Bruno ae; D., Budnikov cr; H., Buesching aw; S., Bufalino dd; P., Buncic ah; O., Busch cl; Z., Buthelezi bj; D., Caffarri ab; X., Cai g; H., Caines eb; A., Caliva bb; E., Calvo Villar cv; V., Canoa Roman ah; F., Carena ah; W., Carena ah; F., Carminati ah; A., Casanova Díaz bq; J., Castillo Castellanos n; E. A. R., Casula w; V., Catanescu bw; C., Cavicchioli ah; C., Ceballos Sanchez i; J., Cepila ak; P., Cerello dd; B., Chang do; S., Chapeland ah; J. L., Charvet n; S., Chattopadhyay dw; S., Chattopadhyay ct; M., Cherney ce; C., Cheshkov du; B., Cheynis du; V., Chibante Barroso ah; D. D., Chinellato dn; Dm, ; P., Chochula ah; M., Chojnacki by; S., Choudhury dw; P., Christakoglou bz; C. H., Christensen by; P., Christiansen af; T., Chujo ds; S. U., Chung co; C., Cicalo cy; L., Cifarelli l; Z, ; F., Cindolo cx; J., Cleymans ch; F., Colamaria ae; D., Colella ae; A., Collu w; M., Colocci z; G., Conesa Balbastre bp; Z., Conesa del Valle au; Ah, ; M. E., Connors eb; G., Contin x; J. G., Contreras k; T. M., Cormier cc; Dz, ; Y., Corrales Morales y; P., Cortese ad; I., Cortés Maldonado b; M. R., Cosentino bs; Dl, ; F., Costa ah; P., Crochet bo; R., Cruz Albino k; E., Cuautle bh; L., Cunqueiro bq; Ah, ; A., Dainese da; R., Dang g; A., Danu bg; D., Das ct; I., Das au; K., Das ct; S., Das d; A., Dash dm; S., Dash ar; S., De dw; H., Delagrange df; 2, ; A., Deloff bv; E., Dénes ea; G., D’Erasmo ae; G. O. V., de Barros dl; A., De Caro l; Ac, ; G., de Cataldo cw; J., de Cuveland am; A., De Falco w; D., De Gruttola ac; L, ; N., De Marco dd; S., De Pasquale ac; R., de Rooij bb; M. A., Diaz Corchero j; T., Dietel ay; Ch, ; R., Divià ah; D., Di Bari ae; S., D
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