Biomaterial Database

Interferometry of direct photons in central 208Pb + 208Pb collisions at 158A GeV. 2004

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

University of Panjab, Chandigarh 160014, India.

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.