Medium modification of jet fragmentation in Au+Au collisions at √sNN=200 GeV measured in direct photon-hadron correlations Article

Adare, A, Afanasiev, S, Aidala, C et al. (2013). Medium modification of jet fragmentation in Au+Au collisions at √sNN=200 GeV measured in direct photon-hadron correlations . PHYSICAL REVIEW LETTERS, 111(3), 10.1103/PhysRevLett.111.032301

cited authors

  • Adare, A; Afanasiev, S; Aidala, C; Ajitanand, NN; Akiba, Y; Akimoto, R; Al-Bataineh, H; Al-Ta'Ani, H; Alexander, J; Angerami, A; Aoki, K; Apadula, N; Aphecetche, L; Aramaki, Y; Armendariz, R; Aronson, SH; Asai, J; Asano, H; Aschenauer, EC; Atomssa, ET; Averbeck, R; Awes, TC; Azmoun, B; Babintsev, V; Bai, M; Baksay, G; Baksay, L; Baldisseri, A; Bannier, B; Barish, KN; Barnes, PD; Bassalleck, B; Basye, AT; Bathe, S; Batsouli, S; Baublis, V; Baumann, C; Baumgart, S; Bazilevsky, A; Belikov, S; Belmont, R; Bennett, R; Berdnikov, A; Berdnikov, Y; Bickley, AA; Bing, X; Blau, DS; Boissevain, JG; Bok, JS; Borel, H; Boyle, K; Brooks, ML; Buesching, H; Bumazhnov, V; Bunce, G; Butsyk, S; Camacho, CM; Campbell, S; Castera, P; Chang, BS; Chang, WC; Charvet, JL; Chen, CH; Chernichenko, S; Chi, CY; Chiba, J; Chiu, M; Choi, IJ; Choi, JB; Choi, S; Choudhury, RK; Christiansen, P; Chujo, T; Chung, P; Churyn, A; Chvala, O; Cianciolo, V; Citron, Z; Cleven, CR; Cole, BA; Comets, MP; Connors, M; Constantin, P; Csanád, M; Csörgo, T; Dahms, T; Dairaku, S; Danchev, I; Das, K; Datta, A; Daugherity, MS; David, G; Deaton, MB; Dehmelt, K; Delagrange, H; Denisov, A; D'Enterria, D; Deshpande, A; Desmond, EJ; Dharmawardane, KV

authors

abstract

  • The jet fragmentation function is measured with direct photon-hadron correlations in p+p and Au+Au collisions at √sNN=200 GeV. The pT of the photon is an excellent approximation to the initial p T of the jet and the ratio zT=pTh/pTγ is used as a proxy for the jet fragmentation function. A statistical subtraction is used to extract the direct photon-hadron yields in Au+Au collisions while a photon isolation cut is applied in p+p. IAA, the ratio of hadron yield opposite the photon in Au+Au to that in p+p, indicates modification of the jet fragmentation function. Suppression, most likely due to energy loss in the medium, is seen at high zT. The associated hadron yield at low z T is enhanced at large angles. Such a trend is expected from redistribution of the lost energy into increased production of low-momentum particles. © 2013 American Physical Society.

publication date

  • July 16, 2013

published in

Digital Object Identifier (DOI)

volume

  • 111

issue

  • 3