Interferometry of direct photons in central 208Pb + 208Pb collisions at 158A GeV

M M Aggarwal; Z Ahammed; A L S Angelis; V Antonenko; V Arefiev; V Astakhov; V Avdeitchikov; T C Awes; P V K S Baba; S K Badyal; S Bathe; B Batiounia; T Bernier; K B Bhalla; V S Bhatia; C Blume; D Bucher; H Büsching; L Carlén; S Chattopadhyay; M P Decowski; H Delagrange; P Donni; M R Dutta Majumdar; K el Chenawi; A K Dubey; K Enosawa; S Fokin; V Frolov; M S Ganti; S Garpman; O Gavrishchuk; F J M Geurts; T K Ghosh; R Glasow; B Guskov; H A Gustafsson; H H Gutbrod; I Hrivnacova; M Ippolitov; H Kalechofsky; K Karadjev; K Karpio; B W Kolb; I Kosarev; I Koutcheryaev; A Kugler; P Kulinich; M Kurata; A Lebedev; H Löhner; L Luquin; D P Mahapatra; V Manko; M Martin; G Martínez; A Maximov; Y Miake; G C Mishra; B Mohanty; M J Mora; D Morrison; T Moukhanova; D S Mukhopadhyay; H Naef; B K Nandi; S K Nayak; T K Nayak; A Nianine; V Nikitine; S Nikolaev; P Nilsson; S Nishimura; P Nomokonov; J Nystrand; A Oskarsson; I Otterlund; T Peitzmann; D Peressounko; V Petracek; S C Phatak; W Pinganaud; F Plasil; M L Purschke; J Rak; R Raniwala; S Raniwala; N K Rao; F Retiere; K Reygers; G Roland; L Rosselet; I Roufanov; C Roy; J M Rubio; S S Sambyal; R Santo; S Sato; H Schlagheck; H R Schmidt; Y Schutz; G Shabratova; T H Shah; I Sibiriak; T Siemiarczuk; D Silvermyr; B C Sinha; N Slavine; K Söderström; G Sood; S P Sørensen; P Stankus; G Stefanek; P Steinberg; E Stenlund; M Sumbera; T Svensson; A Tsvetkov; L Tykarski; E C v d  Pijll; N von  Eijndhoven; G J von  Nieuwenhuizen; A Vinogradov; Y P Viyogi; A Vodopianov; S Vörös; B Wysłouch; G R Young

doi:10.1103/PhysRevLett.93.022301

Interferometry of direct photons in central 208Pb + 208Pb collisions at 158A GeV

Phys Rev Lett. 2004 Jul 9;93(2):022301. doi: 10.1103/PhysRevLett.93.022301. Epub 2004 Jul 6.

Authors

M M Aggarwal¹, Z Ahammed, A L S Angelis, V Antonenko, V Arefiev, V Astakhov, V Avdeitchikov, T C Awes, P V K S Baba, S K Badyal, S Bathe, B Batiounia, T Bernier, K B Bhalla, V S Bhatia, C Blume, D Bucher, H Büsching, L Carlén, S Chattopadhyay, M P Decowski, H Delagrange, P Donni, M R Dutta Majumdar, K el Chenawi, A K Dubey, K Enosawa, S Fokin, V Frolov, M S Ganti, S Garpman, O Gavrishchuk, F J M Geurts, T K Ghosh, R Glasow, B Guskov, H A Gustafsson, H H Gutbrod, I Hrivnacova, M Ippolitov, H Kalechofsky, K Karadjev, K Karpio, B W Kolb, I Kosarev, I Koutcheryaev, A Kugler, P Kulinich, M Kurata, A Lebedev, H Löhner, L Luquin, D P Mahapatra, V Manko, M Martin, G Martínez, A Maximov, Y Miake, G C Mishra, B Mohanty, M J Mora, D Morrison, T Moukhanova, D S Mukhopadhyay, H Naef, B K Nandi, S K Nayak, T K Nayak, A Nianine, V Nikitine, S Nikolaev, P Nilsson, S Nishimura, P Nomokonov, J Nystrand, A Oskarsson, I Otterlund, T Peitzmann, D Peressounko, V Petracek, S C Phatak, W Pinganaud, F Plasil, M L Purschke, J Rak, R Raniwala, S Raniwala, N K Rao, F Retiere, K Reygers, G Roland, L Rosselet, I Roufanov, C Roy, J M Rubio, S S Sambyal, R Santo, S Sato, H Schlagheck, H R Schmidt, Y Schutz, G Shabratova, T H Shah, I Sibiriak, T Siemiarczuk, D Silvermyr, B C Sinha, N Slavine, K Söderström, G Sood, S P Sørensen, P Stankus, G Stefanek, P Steinberg, E Stenlund, M Sumbera, T Svensson, A Tsvetkov, L Tykarski, E C v d Pijll, N von Eijndhoven, G J von Nieuwenhuizen, A Vinogradov, Y P Viyogi, A Vodopianov, S Vörös, B Wysłouch, G R Young

Affiliation

¹ University of Panjab, Chandigarh 160014, India.

PMID: 15323905
DOI: 10.1103/PhysRevLett.93.022301

Abstract

Two-particle correlations of direct photons were measured in central 208Pb+208Pb collisions at 158A GeV. The invariant interferometric radii were extracted for 100<K(T)<300 MeV/c and compared to radii extracted from charged pion correlations. The yield of soft direct photons, K(T)<300 MeV/c, was extracted from the correlation strength and compared to theoretical calculations.