Direct photon production in high-energy heavy-ion collisions

V. Manko, M. M. Aggarwal, A. Agnihotri, 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, A. Baldine, L. Barabach, C. Barlag, S. Bathe, B. Batiounia, T. Bemier, K. B. Bhalla, V. S. BhatiaC. Blume, R. Bock, E. M. Bohne, Z. Böröcz, D. Bucher, A. Buijs, H. Büsching, L. Carlen, V. Chalyshev, S. Chattopadhyay, R. Cherbatchev, T. Chujo, A. Claussen, A. C. Das, M. P. Decowski, V. Djordjadze, P. Donni, I. Doubovik, S. Dutt, M. R. Dutta Majumdar, K. El Chenawi, S. Eliseev, K. Enosawa, P. Foka, S. Fokin, V. Frolov, M. S. Ganti, S. Garpman, O. Gavrishchuk, F. J M Geurts, T. K. Ghosh, R. Glasow, S. K. Gupta, B. Guskov, H. A. Gustafsson, H. H. Gutbrod, R. Higuchi, I. Hrivnacova, M. Ippolitov, H. Kalechofsky, R. Kamermans, K. H. Kampert, K. Karadjev, K. Karpio, S. Kato, S. Kees, H. Kim, B. W. Kolb, I. Kosarev, I. Koutcheryaev, T. Krümpel, A. Kugler, P. Kulinich, M. Kurata, K. Kurita, N. Kuzmin, I. Langbein, A. Lebedev, Y. Y. Lee, H. Löhner, L. Luquin, D. P. Mahapatra, V. Manko, M. Martin, A. Maximov, R. Mehdiyev, G. Mgebrichvili, Y. Miake, D. Mikhalev, M. F. Mir, G. C. Mishra, Y. Miyamoto, D. Morrison, D. S. Mukhopadhyay, V. Myalkovski, H. Naef, B. K. Nandi, S. K. Nayak, T. K. Nayak, S. Neumaier, A. Nianine, V. Nikitine, S. Nikolaev, P. Nilsson, S. Nishimura, P. Nomokonov, J. Nystrand, F. E. Obenshain, A. Oskarsson, I. Otterlund, M. Pachr, A. Parfenov, S. Pavliouk, T. Peitzmann, V. Petracek, F. Plasil, W. Pinanaud, M. L. Purschke, B. Raeven, J. Rak, R. Raniwala, S. Raniwala, V. S. Ramamurthy, N. K. Rao, F. Retiere, K. Reygers, G. Roland, L. Rosselet, I. Roufanov, C. Roy, J. M. Rubio, H. Sako, S. S. Sambyal, R. Santo, S. Sato, H. Schlagheck, H. R. Schmidt, G. Shabratova, T. H. Shah, I. Sibiriak, T. Siemiarczuk, D. Silvermyr, B. C. Sinha, N. Slavine, K. Söderström, N. Solomey, S. P. Sorensen, P. Stankus, G. Stefanek, P. Steinberg, E. Stenlund, D. Stüken, M. Sumbera, T. Svensson, M. D. Trivedi, A. Tsvetkov, L. Tykarski, J. Urbahn, E. C V D Pijll, N. V. Eijndhoven, G. J V Nieuwenhuizen, A. Vinogradov, Y. P. Viyogi, A. Vodopianov, S. Vörös, B. Wyslouch, K. Yagi, Y. Yokota, G. R. Young

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Direct thermal photons in the pt range of 0 - 5 GeV/c are expected to provide a sensitive probe of the hot dense matter formed in the early stage of relativistic heavy ion collisions. The production of single photons in 158 AGeV Pb+Pb interactions has been studied with the 10080 detector lead glass calorimeter of the WA98 experiment at CERN. Neutral π0 cross section has been measured via its two-photon decay branch. At pt ≥ ∼GeV/c single photon yields of ∼20% of the decay photon yields are observed consistently with different photon identification criteria both for the peripheral and central events.

Original languageEnglish (US)
JournalNuclear Physics A
Volume654
Issue number1 SUPPL. 1
StatePublished - Jul 26 1999

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ionic collisions
photons
energy
decay
calorimeters
probes
glass
detectors
cross sections
interactions

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Manko, V., Aggarwal, M. M., Agnihotri, A., Ahammed, Z., Angelis, A. L. S., Antonenko, V., ... Young, G. R. (1999). Direct photon production in high-energy heavy-ion collisions. Nuclear Physics A, 654(1 SUPPL. 1).

Direct photon production in high-energy heavy-ion collisions. / Manko, V.; Aggarwal, M. M.; Agnihotri, A.; Ahammed, Z.; Angelis, A. L S; Antonenko, V.; Arefiev, V.; Astakhov, V.; Avdeitchikov, V.; Awes, T. C.; Baba, P. V K S; Badyal, S. K.; Baldine, A.; Barabach, L.; Barlag, C.; Bathe, S.; Batiounia, B.; Bemier, T.; Bhalla, K. B.; Bhatia, V. S.; Blume, C.; Bock, R.; Bohne, E. M.; Böröcz, Z.; Bucher, D.; Buijs, A.; Büsching, H.; Carlen, L.; Chalyshev, V.; Chattopadhyay, S.; Cherbatchev, R.; Chujo, T.; Claussen, A.; Das, A. C.; Decowski, M. P.; Djordjadze, V.; Donni, P.; Doubovik, I.; Dutt, S.; Dutta Majumdar, M. R.; El Chenawi, K.; Eliseev, S.; Enosawa, K.; Foka, P.; Fokin, S.; Frolov, V.; Ganti, M. S.; Garpman, S.; Gavrishchuk, O.; Geurts, F. J M; Ghosh, T. K.; Glasow, R.; Gupta, S. K.; Guskov, B.; Gustafsson, H. A.; Gutbrod, H. H.; Higuchi, R.; Hrivnacova, I.; Ippolitov, M.; Kalechofsky, H.; Kamermans, R.; Kampert, K. H.; Karadjev, K.; Karpio, K.; Kato, S.; Kees, S.; Kim, H.; Kolb, B. W.; Kosarev, I.; Koutcheryaev, I.; Krümpel, T.; Kugler, A.; Kulinich, P.; Kurata, M.; Kurita, K.; Kuzmin, N.; Langbein, I.; Lebedev, A.; Lee, Y. Y.; Löhner, H.; Luquin, L.; Mahapatra, D. P.; Manko, V.; Martin, M.; Maximov, A.; Mehdiyev, R.; Mgebrichvili, G.; Miake, Y.; Mikhalev, D.; Mir, M. F.; Mishra, G. C.; Miyamoto, Y.; Morrison, D.; Mukhopadhyay, D. S.; Myalkovski, V.; Naef, H.; Nandi, B. K.; Nayak, S. K.; Nayak, T. K.; Neumaier, S.; Nianine, A.; Nikitine, V.; Nikolaev, S.; Nilsson, P.; Nishimura, S.; Nomokonov, P.; Nystrand, J.; Obenshain, F. E.; Oskarsson, A.; Otterlund, I.; Pachr, M.; Parfenov, A.; Pavliouk, S.; Peitzmann, T.; Petracek, V.; Plasil, F.; Pinanaud, W.; Purschke, M. L.; Raeven, B.; Rak, J.; Raniwala, R.; Raniwala, S.; Ramamurthy, V. S.; Rao, N. K.; Retiere, F.; Reygers, K.; Roland, G.; Rosselet, L.; Roufanov, I.; Roy, C.; Rubio, J. M.; Sako, H.; Sambyal, S. S.; Santo, R.; Sato, S.; Schlagheck, H.; Schmidt, H. R.; Shabratova, G.; Shah, T. H.; Sibiriak, I.; Siemiarczuk, T.; Silvermyr, D.; Sinha, B. C.; Slavine, N.; Söderström, K.; Solomey, N.; Sorensen, S. P.; Stankus, P.; Stefanek, G.; Steinberg, P.; Stenlund, E.; Stüken, D.; Sumbera, M.; Svensson, T.; Trivedi, M. D.; Tsvetkov, A.; Tykarski, L.; Urbahn, J.; Pijll, E. C V D; Eijndhoven, N. V.; Nieuwenhuizen, G. J V; Vinogradov, A.; Viyogi, Y. P.; Vodopianov, A.; Vörös, S.; Wyslouch, B.; Yagi, K.; Yokota, Y.; Young, G. R.

In: Nuclear Physics A, Vol. 654, No. 1 SUPPL. 1, 26.07.1999.

Research output: Contribution to journalArticle

Manko, V, Aggarwal, MM, Agnihotri, A, Ahammed, Z, Angelis, ALS, Antonenko, V, Arefiev, V, Astakhov, V, Avdeitchikov, V, Awes, TC, Baba, PVKS, Badyal, SK, Baldine, A, Barabach, L, Barlag, C, Bathe, S, Batiounia, B, Bemier, T, Bhalla, KB, Bhatia, VS, Blume, C, Bock, R, Bohne, EM, Böröcz, Z, Bucher, D, Buijs, A, Büsching, H, Carlen, L, Chalyshev, V, Chattopadhyay, S, Cherbatchev, R, Chujo, T, Claussen, A, Das, AC, Decowski, MP, Djordjadze, V, Donni, P, Doubovik, I, Dutt, S, Dutta Majumdar, MR, El Chenawi, K, Eliseev, S, Enosawa, K, Foka, P, Fokin, S, Frolov, V, Ganti, MS, Garpman, S, Gavrishchuk, O, Geurts, FJM, Ghosh, TK, Glasow, R, Gupta, SK, Guskov, B, Gustafsson, HA, Gutbrod, HH, Higuchi, R, Hrivnacova, I, Ippolitov, M, Kalechofsky, H, Kamermans, R, Kampert, KH, Karadjev, K, Karpio, K, Kato, S, Kees, S, Kim, H, Kolb, BW, Kosarev, I, Koutcheryaev, I, Krümpel, T, Kugler, A, Kulinich, P, Kurata, M, Kurita, K, Kuzmin, N, Langbein, I, Lebedev, A, Lee, YY, Löhner, H, Luquin, L, Mahapatra, DP, Manko, V, Martin, M, Maximov, A, Mehdiyev, R, Mgebrichvili, G, Miake, Y, Mikhalev, D, Mir, MF, Mishra, GC, Miyamoto, Y, Morrison, D, Mukhopadhyay, DS, Myalkovski, V, Naef, H, Nandi, BK, Nayak, SK, Nayak, TK, Neumaier, S, Nianine, A, Nikitine, V, Nikolaev, S, Nilsson, P, Nishimura, S, Nomokonov, P, Nystrand, J, Obenshain, FE, Oskarsson, A, Otterlund, I, Pachr, M, Parfenov, A, Pavliouk, S, Peitzmann, T, Petracek, V, Plasil, F, Pinanaud, W, Purschke, ML, Raeven, B, Rak, J, Raniwala, R, Raniwala, S, Ramamurthy, VS, Rao, NK, Retiere, F, Reygers, K, Roland, G, Rosselet, L, Roufanov, I, Roy, C, Rubio, JM, Sako, H, Sambyal, SS, Santo, R, Sato, S, Schlagheck, H, Schmidt, HR, Shabratova, G, Shah, TH, Sibiriak, I, Siemiarczuk, T, Silvermyr, D, Sinha, BC, Slavine, N, Söderström, K, Solomey, N, Sorensen, SP, Stankus, P, Stefanek, G, Steinberg, P, Stenlund, E, Stüken, D, Sumbera, M, Svensson, T, Trivedi, MD, Tsvetkov, A, Tykarski, L, Urbahn, J, Pijll, ECVD, Eijndhoven, NV, Nieuwenhuizen, GJV, Vinogradov, A, Viyogi, YP, Vodopianov, A, Vörös, S, Wyslouch, B, Yagi, K, Yokota, Y & Young, GR 1999, 'Direct photon production in high-energy heavy-ion collisions', Nuclear Physics A, vol. 654, no. 1 SUPPL. 1.
Manko V, Aggarwal MM, Agnihotri A, Ahammed Z, Angelis ALS, Antonenko V et al. Direct photon production in high-energy heavy-ion collisions. Nuclear Physics A. 1999 Jul 26;654(1 SUPPL. 1).
Manko, V. ; Aggarwal, M. M. ; Agnihotri, A. ; Ahammed, Z. ; Angelis, A. L S ; Antonenko, V. ; Arefiev, V. ; Astakhov, V. ; Avdeitchikov, V. ; Awes, T. C. ; Baba, P. V K S ; Badyal, S. K. ; Baldine, A. ; Barabach, L. ; Barlag, C. ; Bathe, S. ; Batiounia, B. ; Bemier, T. ; Bhalla, K. B. ; Bhatia, V. S. ; Blume, C. ; Bock, R. ; Bohne, E. M. ; Böröcz, Z. ; Bucher, D. ; Buijs, A. ; Büsching, H. ; Carlen, L. ; Chalyshev, V. ; Chattopadhyay, S. ; Cherbatchev, R. ; Chujo, T. ; Claussen, A. ; Das, A. C. ; Decowski, M. P. ; Djordjadze, V. ; Donni, P. ; Doubovik, I. ; Dutt, S. ; Dutta Majumdar, M. R. ; El Chenawi, K. ; Eliseev, S. ; Enosawa, K. ; Foka, P. ; Fokin, S. ; Frolov, V. ; Ganti, M. S. ; Garpman, S. ; Gavrishchuk, O. ; Geurts, F. J M ; Ghosh, T. K. ; Glasow, R. ; Gupta, S. K. ; Guskov, B. ; Gustafsson, H. A. ; Gutbrod, H. H. ; Higuchi, R. ; Hrivnacova, I. ; Ippolitov, M. ; Kalechofsky, H. ; Kamermans, R. ; Kampert, K. H. ; Karadjev, K. ; Karpio, K. ; Kato, S. ; Kees, S. ; Kim, H. ; Kolb, B. W. ; Kosarev, I. ; Koutcheryaev, I. ; Krümpel, T. ; Kugler, A. ; Kulinich, P. ; Kurata, M. ; Kurita, K. ; Kuzmin, N. ; Langbein, I. ; Lebedev, A. ; Lee, Y. Y. ; Löhner, H. ; Luquin, L. ; Mahapatra, D. P. ; Manko, V. ; Martin, M. ; Maximov, A. ; Mehdiyev, R. ; Mgebrichvili, G. ; Miake, Y. ; Mikhalev, D. ; Mir, M. F. ; Mishra, G. C. ; Miyamoto, Y. ; Morrison, D. ; Mukhopadhyay, D. S. ; Myalkovski, V. ; Naef, H. ; Nandi, B. K. ; Nayak, S. K. ; Nayak, T. K. ; Neumaier, S. ; Nianine, A. ; Nikitine, V. ; Nikolaev, S. ; Nilsson, P. ; Nishimura, S. ; Nomokonov, P. ; Nystrand, J. ; Obenshain, F. E. ; Oskarsson, A. ; Otterlund, I. ; Pachr, M. ; Parfenov, A. ; Pavliouk, S. ; Peitzmann, T. ; Petracek, V. ; Plasil, F. ; Pinanaud, W. ; Purschke, M. L. ; Raeven, B. ; Rak, J. ; Raniwala, R. ; Raniwala, S. ; Ramamurthy, V. S. ; Rao, N. K. ; Retiere, F. ; Reygers, K. ; Roland, G. ; Rosselet, L. ; Roufanov, I. ; Roy, C. ; Rubio, J. M. ; Sako, H. ; Sambyal, S. S. ; Santo, R. ; Sato, S. ; Schlagheck, H. ; Schmidt, H. R. ; Shabratova, G. ; Shah, T. H. ; Sibiriak, I. ; Siemiarczuk, T. ; Silvermyr, D. ; Sinha, B. C. ; Slavine, N. ; Söderström, K. ; Solomey, N. ; Sorensen, S. P. ; Stankus, P. ; Stefanek, G. ; Steinberg, P. ; Stenlund, E. ; Stüken, D. ; Sumbera, M. ; Svensson, T. ; Trivedi, M. D. ; Tsvetkov, A. ; Tykarski, L. ; Urbahn, J. ; Pijll, E. C V D ; Eijndhoven, N. V. ; Nieuwenhuizen, G. J V ; Vinogradov, A. ; Viyogi, Y. P. ; Vodopianov, A. ; Vörös, S. ; Wyslouch, B. ; Yagi, K. ; Yokota, Y. ; Young, G. R. / Direct photon production in high-energy heavy-ion collisions. In: Nuclear Physics A. 1999 ; Vol. 654, No. 1 SUPPL. 1.
@article{d1c2829073834caa9d1bd0e4d9c12a08,
title = "Direct photon production in high-energy heavy-ion collisions",
abstract = "Direct thermal photons in the pt range of 0 - 5 GeV/c are expected to provide a sensitive probe of the hot dense matter formed in the early stage of relativistic heavy ion collisions. The production of single photons in 158 AGeV Pb+Pb interactions has been studied with the 10080 detector lead glass calorimeter of the WA98 experiment at CERN. Neutral π0 cross section has been measured via its two-photon decay branch. At pt ≥ ∼GeV/c single photon yields of ∼20{\%} of the decay photon yields are observed consistently with different photon identification criteria both for the peripheral and central events.",
author = "V. Manko and Aggarwal, {M. M.} and A. Agnihotri and Z. Ahammed and Angelis, {A. L S} and V. Antonenko and V. Arefiev and V. Astakhov and V. Avdeitchikov and Awes, {T. C.} and Baba, {P. V K S} and Badyal, {S. K.} and A. Baldine and L. Barabach and C. Barlag and S. Bathe and B. Batiounia and T. Bemier and Bhalla, {K. B.} and Bhatia, {V. S.} and C. Blume and R. Bock and Bohne, {E. M.} and Z. B{\"o}r{\"o}cz and D. Bucher and A. Buijs and H. B{\"u}sching and L. Carlen and V. Chalyshev and S. Chattopadhyay and R. Cherbatchev and T. Chujo and A. Claussen and Das, {A. C.} and Decowski, {M. P.} and V. Djordjadze and P. Donni and I. Doubovik and S. Dutt and {Dutta Majumdar}, {M. R.} and {El Chenawi}, K. and S. Eliseev and K. Enosawa and P. Foka and S. Fokin and V. Frolov and Ganti, {M. S.} and S. Garpman and O. Gavrishchuk and Geurts, {F. J M} and Ghosh, {T. K.} and R. Glasow and Gupta, {S. K.} and B. Guskov and Gustafsson, {H. A.} and Gutbrod, {H. H.} and R. Higuchi and I. Hrivnacova and M. Ippolitov and H. Kalechofsky and R. Kamermans and Kampert, {K. H.} and K. Karadjev and K. Karpio and S. Kato and S. Kees and H. Kim and Kolb, {B. W.} and I. Kosarev and I. Koutcheryaev and T. Kr{\"u}mpel and A. Kugler and P. Kulinich and M. Kurata and K. Kurita and N. Kuzmin and I. Langbein and A. Lebedev and Lee, {Y. Y.} and H. L{\"o}hner and L. Luquin and Mahapatra, {D. P.} and V. Manko and M. Martin and A. Maximov and R. Mehdiyev and G. Mgebrichvili and Y. Miake and D. Mikhalev and Mir, {M. F.} and Mishra, {G. C.} and Y. Miyamoto and D. Morrison and Mukhopadhyay, {D. S.} and V. Myalkovski and H. Naef and Nandi, {B. K.} and Nayak, {S. K.} and Nayak, {T. K.} and S. Neumaier and A. Nianine and V. Nikitine and S. Nikolaev and P. Nilsson and S. Nishimura and P. Nomokonov and J. Nystrand and Obenshain, {F. E.} and A. Oskarsson and I. Otterlund and M. Pachr and A. Parfenov and S. Pavliouk and T. Peitzmann and V. Petracek and F. Plasil and W. Pinanaud and Purschke, {M. L.} and B. Raeven and J. Rak and R. Raniwala and S. Raniwala and Ramamurthy, {V. S.} and Rao, {N. K.} and F. Retiere and K. Reygers and G. Roland and L. Rosselet and I. Roufanov and C. Roy and Rubio, {J. M.} and H. Sako and Sambyal, {S. S.} and R. Santo and S. Sato and H. Schlagheck and Schmidt, {H. R.} and G. Shabratova and Shah, {T. H.} and I. Sibiriak and T. Siemiarczuk and D. Silvermyr and Sinha, {B. C.} and N. Slavine and K. S{\"o}derstr{\"o}m and N. Solomey and Sorensen, {S. P.} and P. Stankus and G. Stefanek and P. Steinberg and E. Stenlund and D. St{\"u}ken and M. Sumbera and T. Svensson and Trivedi, {M. D.} and A. Tsvetkov and L. Tykarski and J. Urbahn and Pijll, {E. C V D} and Eijndhoven, {N. V.} and Nieuwenhuizen, {G. J V} and A. Vinogradov and Viyogi, {Y. P.} and A. Vodopianov and S. V{\"o}r{\"o}s and B. Wyslouch and K. Yagi and Y. Yokota and Young, {G. R.}",
year = "1999",
month = "7",
day = "26",
language = "English (US)",
volume = "654",
journal = "Nuclear Physics A",
issn = "0375-9474",
publisher = "Elsevier",
number = "1 SUPPL. 1",

}

TY - JOUR

T1 - Direct photon production in high-energy heavy-ion collisions

AU - Manko, V.

AU - Aggarwal, M. M.

AU - Agnihotri, A.

AU - Ahammed, Z.

AU - Angelis, A. L S

AU - Antonenko, V.

AU - Arefiev, V.

AU - Astakhov, V.

AU - Avdeitchikov, V.

AU - Awes, T. C.

AU - Baba, P. V K S

AU - Badyal, S. K.

AU - Baldine, A.

AU - Barabach, L.

AU - Barlag, C.

AU - Bathe, S.

AU - Batiounia, B.

AU - Bemier, T.

AU - Bhalla, K. B.

AU - Bhatia, V. S.

AU - Blume, C.

AU - Bock, R.

AU - Bohne, E. M.

AU - Böröcz, Z.

AU - Bucher, D.

AU - Buijs, A.

AU - Büsching, H.

AU - Carlen, L.

AU - Chalyshev, V.

AU - Chattopadhyay, S.

AU - Cherbatchev, R.

AU - Chujo, T.

AU - Claussen, A.

AU - Das, A. C.

AU - Decowski, M. P.

AU - Djordjadze, V.

AU - Donni, P.

AU - Doubovik, I.

AU - Dutt, S.

AU - Dutta Majumdar, M. R.

AU - El Chenawi, K.

AU - Eliseev, S.

AU - Enosawa, K.

AU - Foka, P.

AU - Fokin, S.

AU - Frolov, V.

AU - Ganti, M. S.

AU - Garpman, S.

AU - Gavrishchuk, O.

AU - Geurts, F. J M

AU - Ghosh, T. K.

AU - Glasow, R.

AU - Gupta, S. K.

AU - Guskov, B.

AU - Gustafsson, H. A.

AU - Gutbrod, H. H.

AU - Higuchi, R.

AU - Hrivnacova, I.

AU - Ippolitov, M.

AU - Kalechofsky, H.

AU - Kamermans, R.

AU - Kampert, K. H.

AU - Karadjev, K.

AU - Karpio, K.

AU - Kato, S.

AU - Kees, S.

AU - Kim, H.

AU - Kolb, B. W.

AU - Kosarev, I.

AU - Koutcheryaev, I.

AU - Krümpel, T.

AU - Kugler, A.

AU - Kulinich, P.

AU - Kurata, M.

AU - Kurita, K.

AU - Kuzmin, N.

AU - Langbein, I.

AU - Lebedev, A.

AU - Lee, Y. Y.

AU - Löhner, H.

AU - Luquin, L.

AU - Mahapatra, D. P.

AU - Manko, V.

AU - Martin, M.

AU - Maximov, A.

AU - Mehdiyev, R.

AU - Mgebrichvili, G.

AU - Miake, Y.

AU - Mikhalev, D.

AU - Mir, M. F.

AU - Mishra, G. C.

AU - Miyamoto, Y.

AU - Morrison, D.

AU - Mukhopadhyay, D. S.

AU - Myalkovski, V.

AU - Naef, H.

AU - Nandi, B. K.

AU - Nayak, S. K.

AU - Nayak, T. K.

AU - Neumaier, S.

AU - Nianine, A.

AU - Nikitine, V.

AU - Nikolaev, S.

AU - Nilsson, P.

AU - Nishimura, S.

AU - Nomokonov, P.

AU - Nystrand, J.

AU - Obenshain, F. E.

AU - Oskarsson, A.

AU - Otterlund, I.

AU - Pachr, M.

AU - Parfenov, A.

AU - Pavliouk, S.

AU - Peitzmann, T.

AU - Petracek, V.

AU - Plasil, F.

AU - Pinanaud, W.

AU - Purschke, M. L.

AU - Raeven, B.

AU - Rak, J.

AU - Raniwala, R.

AU - Raniwala, S.

AU - Ramamurthy, V. S.

AU - Rao, N. K.

AU - Retiere, F.

AU - Reygers, K.

AU - Roland, G.

AU - Rosselet, L.

AU - Roufanov, I.

AU - Roy, C.

AU - Rubio, J. M.

AU - Sako, H.

AU - Sambyal, S. S.

AU - Santo, R.

AU - Sato, S.

AU - Schlagheck, H.

AU - Schmidt, H. R.

AU - Shabratova, G.

AU - Shah, T. H.

AU - Sibiriak, I.

AU - Siemiarczuk, T.

AU - Silvermyr, D.

AU - Sinha, B. C.

AU - Slavine, N.

AU - Söderström, K.

AU - Solomey, N.

AU - Sorensen, S. P.

AU - Stankus, P.

AU - Stefanek, G.

AU - Steinberg, P.

AU - Stenlund, E.

AU - Stüken, D.

AU - Sumbera, M.

AU - Svensson, T.

AU - Trivedi, M. D.

AU - Tsvetkov, A.

AU - Tykarski, L.

AU - Urbahn, J.

AU - Pijll, E. C V D

AU - Eijndhoven, N. V.

AU - Nieuwenhuizen, G. J V

AU - Vinogradov, A.

AU - Viyogi, Y. P.

AU - Vodopianov, A.

AU - Vörös, S.

AU - Wyslouch, B.

AU - Yagi, K.

AU - Yokota, Y.

AU - Young, G. R.

PY - 1999/7/26

Y1 - 1999/7/26

N2 - Direct thermal photons in the pt range of 0 - 5 GeV/c are expected to provide a sensitive probe of the hot dense matter formed in the early stage of relativistic heavy ion collisions. The production of single photons in 158 AGeV Pb+Pb interactions has been studied with the 10080 detector lead glass calorimeter of the WA98 experiment at CERN. Neutral π0 cross section has been measured via its two-photon decay branch. At pt ≥ ∼GeV/c single photon yields of ∼20% of the decay photon yields are observed consistently with different photon identification criteria both for the peripheral and central events.

AB - Direct thermal photons in the pt range of 0 - 5 GeV/c are expected to provide a sensitive probe of the hot dense matter formed in the early stage of relativistic heavy ion collisions. The production of single photons in 158 AGeV Pb+Pb interactions has been studied with the 10080 detector lead glass calorimeter of the WA98 experiment at CERN. Neutral π0 cross section has been measured via its two-photon decay branch. At pt ≥ ∼GeV/c single photon yields of ∼20% of the decay photon yields are observed consistently with different photon identification criteria both for the peripheral and central events.

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M3 - Article

AN - SCOPUS:0041593907

VL - 654

JO - Nuclear Physics A

JF - Nuclear Physics A

SN - 0375-9474

IS - 1 SUPPL. 1

ER -