Observation of direct photons in central 158A GeV Pb-208+Pb-208 collisions

M.M. Aggarwal; A. Agnihotri; Z.A. Ahammed; A.L.S. Angelis; V. Antonenko; V. Arefiev; V. Astakhov; V. Avdeitchikov; T.C. Awes; P.V.K.S. Baba; S.K. Badyal; C. Barlag; S. Bathe; B. Batiounia; T. Bernier; K.B. Bhalla; V.S. Bhatia; C. Blume; D. Bock; E.-M. Bohne; Z.K. Böröcz; D. Bucher; A. Buijs; H. Büsching; L. Carlén; V. Chalyshev; S. Chattopadhyay; R. Cherbatchev; T. Chujo; A. Claussen; A.C. Das; M.P. Decowski; H. Delagrange; V. Djordjadze; P. Donni; I. Doubovik; S. Dutt; M.R. Dutta Majumdar; K. El Chenawi; S. Eliseev; K. Enosawa; P. Foka; S. Fokin; M.S. Ganti; S. Garpmann; O. Gavrishchuk; F. 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; C. Klein-Bösing; S. Knoche; B. 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; G. Martinez; A. Maximov; G. Mgebrichvili; Y. Miake; Md.F. Mir; Y. Miyamoto; B. Mohanti; M.-J. Mora; D. Morrison; D.S. Mukhopadhyay; H. Naef; B.K. Nandi; S.K. Nayak; T.K. Nayak; S. Neumaier; A. Nianine; V. Nikitine

doi:10.1103/PhysRevLett.85.3595

Observation of direct photons in central 158A GeV Pb-208+Pb-208 collisions

M.M. Aggarwal, A. Agnihotri, Z.A. Ahammed, A.L.S. Angelis, V. Antonenko, V. Arefiev, V. Astakhov, V. Avdeitchikov, T.C. Awes, P.V.K.S. Baba, S.K. Badyal, C. Barlag, S. Bathe, B. Batiounia, T. Bernier, K.B. Bhalla, V.S. Bhatia, C. Blume, D. Bock, E.-M. BohneZ.K. Böröcz, D. Bucher, A. Buijs, H. Büsching, L. Carlén, V. Chalyshev, S. Chattopadhyay, R. Cherbatchev, T. Chujo, A. Claussen, A.C. Das, M.P. Decowski, H. Delagrange, V. Djordjadze, P. Donni, I. Doubovik, S. Dutt, M.R. Dutta Majumdar, K. El Chenawi, S. Eliseev, K. Enosawa, P. Foka, S. Fokin, M.S. Ganti, S. Garpmann, O. Gavrishchuk, F. 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, C. Klein-Bösing, S. Knoche, B. 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, G. Martinez, A. Maximov, G. Mgebrichvili, Y. Miake, Md.F. Mir, Y. Miyamoto, B. Mohanti, M.-J. Mora, D. Morrison, D.S. Mukhopadhyay, H. Naef, B.K. Nandi, S.K. Nayak, T.K. Nayak, S. Neumaier, A. Nianine, V. Nikitine

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Abstract

A measurement of direct photon production in Pb-208 + Pb-208 collisions at 158A GeV has been carried out in the CERN WA98 experiment. The invariant yield of direct photons in central collisions is extracted as a function of transverse momentum in the interval 0.5 <p(T) <4 GeV/c. A significant direct photon signal, compared to statistical and systematical errors, is seen at p(T) > 1.5 GeV/c. The result constitutes the first observation of direct photons in ultrarelativistic heavy-ion collisions. It could be significant for diagnosis;of quark-gluon-plasma formation.

Original language	English
Pages (from-to)	3595-3599
Number of pages	5
Journal	Physical Review Letters
Volume	85
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.85.3595
Publication status	Published - 23-Oct-2000

Keywords

QUARK-GLUON PLASMA
PHASE-TRANSITION
S+AU COLLISIONS
HADRON
SINGLE
200-GEV/C
SPECTRA
MATTER

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Observation of direct photons in Central 158 A GeV Pb+Pb collisions
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Aggarwal, M. M., Agnihotri, A., Ahammed, Z. A., Angelis, A. L. S., Antonenko, V., Arefiev, V., Astakhov, V., Avdeitchikov, V., Awes, T. C., Baba, P. V. K. S., Badyal, S. K., Barlag, C., Bathe, S., Batiounia, B., Bernier, T., Bhalla, K. B., Bhatia, V. S., Blume, C., Bock, D., ... Nikitine, V. (2000). Observation of direct photons in central 158A GeV Pb-208+Pb-208 collisions. Physical Review Letters, 85(17), 3595-3599. https://doi.org/10.1103/PhysRevLett.85.3595

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title = "Observation of direct photons in central 158A GeV Pb-208+Pb-208 collisions",

abstract = "A measurement of direct photon production in Pb-208 + Pb-208 collisions at 158A GeV has been carried out in the CERN WA98 experiment. The invariant yield of direct photons in central collisions is extracted as a function of transverse momentum in the interval 0.5 1.5 GeV/c. The result constitutes the first observation of direct photons in ultrarelativistic heavy-ion collisions. It could be significant for diagnosis;of quark-gluon-plasma formation.",

keywords = "QUARK-GLUON PLASMA, PHASE-TRANSITION, S+AU COLLISIONS, HADRON, SINGLE, 200-GEV/C, SPECTRA, MATTER",

author = "M.M. Aggarwal and A. Agnihotri and Z.A. 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 C. Barlag and S. Bathe and B. Batiounia and T. Bernier and K.B. Bhalla and V.S. Bhatia and C. Blume and D. Bock and E.-M. Bohne and Z.K. B{\"o}r{\"o}cz and D. Bucher and A. Buijs and H. B{\"u}sching and L. Carl{\'e}n and V. Chalyshev and S. Chattopadhyay and R. Cherbatchev and T. Chujo and A. Claussen and A.C. Das and M.P. Decowski and H. Delagrange 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 M.S. Ganti and S. Garpmann and O. Gavrishchuk and F. Geurts and Ghosh, {T. K.} and R. Glasow and S.K. Gupta and B. Guskov and H.-A. Gustafsson and H.H. Gutbrod and R. Higuchi and I. Hrivnacova and M. Ippolitov and H. Kalechofsky and R. Kamermans and K.-H. Kampert and K. Karadjev and K. Karpio and S. Kato and S. Kees and C. Klein-B{\"o}sing and S. Knoche and B. Kolb 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 Y.Y. Lee and H. L{\"o}hner and L. Luquin and D.P. Mahapatra and V. Manko and M. Martin and G. Martinez and A. Maximov and G. Mgebrichvili and Y. Miake and Md.F. Mir and Y. Miyamoto and B. Mohanti and M.-J. Mora and D. Morrison and D.S. Mukhopadhyay and H. Naef and B.K. Nandi and S.K. Nayak and T.K. Nayak and S. Neumaier and A. Nianine and V. Nikitine",

year = "2000",

month = oct,

day = "23",

doi = "10.1103/PhysRevLett.85.3595",

language = "English",

volume = "85",

pages = "3595--3599",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "AMER PHYSICAL SOC",

number = "17",

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Aggarwal, MM, Agnihotri, A, Ahammed, ZA, Angelis, ALS, Antonenko, V, Arefiev, V, Astakhov, V, Avdeitchikov, V, Awes, TC, Baba, PVKS, Badyal, SK, Barlag, C, Bathe, S, Batiounia, B, Bernier, T, Bhalla, KB, Bhatia, VS, Blume, C, Bock, D, Bohne, E-M, Böröcz, ZK, Bucher, D, Buijs, A, Büsching, H, Carlén, L, Chalyshev, V, Chattopadhyay, S, Cherbatchev, R, Chujo, T, Claussen, A, Das, AC, Decowski, MP, Delagrange, H, Djordjadze, V, Donni, P, Doubovik, I, Dutt, S, Dutta Majumdar, MR, El Chenawi, K, Eliseev, S, Enosawa, K, Foka, P, Fokin, S, Ganti, MS, Garpmann, S, Gavrishchuk, O, Geurts, F, Ghosh, TK, Glasow, R, Gupta, SK, Guskov, B, Gustafsson, H-A, Gutbrod, HH, Higuchi, R, Hrivnacova, I, Ippolitov, M, Kalechofsky, H, Kamermans, R, Kampert, K-H, Karadjev, K, Karpio, K, Kato, S, Kees, S, Klein-Bösing, C, Knoche, S, Kolb, B, 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, Martinez, G, Maximov, A, Mgebrichvili, G, Miake, Y, Mir, MF, Miyamoto, Y, Mohanti, B, Mora, M-J, Morrison, D, Mukhopadhyay, DS, Naef, H, Nandi, BK, Nayak, SK, Nayak, TK, Neumaier, S, Nianine, A & Nikitine, V 2000, 'Observation of direct photons in central 158A GeV Pb-208+Pb-208 collisions', Physical Review Letters, vol. 85, no. 17, pp. 3595-3599. https://doi.org/10.1103/PhysRevLett.85.3595

TY - JOUR

T1 - Observation of direct photons in central 158A GeV Pb-208+Pb-208 collisions

AU - Aggarwal, M.M.

AU - Agnihotri, A.

AU - Ahammed, Z.A.

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 - Barlag, C.

AU - Bathe, S.

AU - Batiounia, B.

AU - Bernier, T.

AU - Bhalla, K.B.

AU - Bhatia, V.S.

AU - Blume, C.

AU - Bock, D.

AU - Bohne, E.-M.

AU - Böröcz, Z.K.

AU - Bucher, D.

AU - Buijs, A.

AU - Büsching, H.

AU - Carlén, 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 - Delagrange, H.

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 - Ganti, M.S.

AU - Garpmann, S.

AU - Gavrishchuk, O.

AU - Geurts, F.

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 - Klein-Bösing, C.

AU - Knoche, S.

AU - Kolb, B.

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 - Martinez, G.

AU - Maximov, A.

AU - Mgebrichvili, G.

AU - Miake, Y.

AU - Mir, Md.F.

AU - Miyamoto, Y.

AU - Mohanti, B.

AU - Mora, M.-J.

AU - Morrison, D.

AU - Mukhopadhyay, D.S.

AU - Naef, H.

AU - Nandi, B.K.

AU - Nayak, S.K.

AU - Nayak, T.K.

AU - Neumaier, S.

AU - Nianine, A.

AU - Nikitine, V.

PY - 2000/10/23

Y1 - 2000/10/23

N2 - A measurement of direct photon production in Pb-208 + Pb-208 collisions at 158A GeV has been carried out in the CERN WA98 experiment. The invariant yield of direct photons in central collisions is extracted as a function of transverse momentum in the interval 0.5 1.5 GeV/c. The result constitutes the first observation of direct photons in ultrarelativistic heavy-ion collisions. It could be significant for diagnosis;of quark-gluon-plasma formation.

AB - A measurement of direct photon production in Pb-208 + Pb-208 collisions at 158A GeV has been carried out in the CERN WA98 experiment. The invariant yield of direct photons in central collisions is extracted as a function of transverse momentum in the interval 0.5 1.5 GeV/c. The result constitutes the first observation of direct photons in ultrarelativistic heavy-ion collisions. It could be significant for diagnosis;of quark-gluon-plasma formation.

KW - QUARK-GLUON PLASMA

KW - PHASE-TRANSITION

KW - S+AU COLLISIONS

KW - HADRON

KW - SINGLE

KW - 200-GEV/C

KW - SPECTRA

KW - MATTER

U2 - 10.1103/PhysRevLett.85.3595

DO - 10.1103/PhysRevLett.85.3595

M3 - Article

SN - 0031-9007

VL - 85

SP - 3595

EP - 3599

JO - Physical Review Letters

JF - Physical Review Letters

IS - 17

ER -

Observation of direct photons in central 158A GeV Pb-208+Pb-208 collisions

Abstract

Keywords

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