Centrality and transverse momentum dependence of collective flow in 158 A GeV Pb + Pb collisions measured via inclusive photons

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, V. S. Bhatia, C. Blume, D. Bucher, H. Büsching, L. Carlén, S. Chattopadhyay, M. P. DecowskiH. Delagrange, P. Donni, M. R. Dutta Majumdar, A. K. Dubey, K. El Chenawi, 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, R. Kamermans, 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. Mukhanova, 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. Sorensen, P. Stankus, G. Stefanek, P. Steinberg, E. Stenlund, M. Sumbera, T. Svensson, A. Tsvetkov, L. Tykarski, E. C V D Pijll, N. V. Eijndhoven, G. J V Nieuwenhuizen, A. Vinogradov, Y. P. Viyogi, A. Vodopianov, S. Vörös, B. Wyslouch, G. R. Young

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Directed and elliptic flow of inclusive photons near mid-rapidity in 158 A GeV Pb + Pb collisions has been studied. The data have been obtained with the photon spectrometer LEDA of the WA98 experiment at the CERN SPS. The flow strength has been measured for various centralities as a function of pT and rapidity over 0.18 < pT < 1.5 GeV/c and 2.3 < y < 2.9. The angular anisotropy has been studied relative to an event plane obtained in the target fragmentation region that shows the elliptic flow to be in-plane. The elliptic flow has also been studied using two-particle correlations and shown to give similar results. A small directed flow component is observed. Both the directed and elliptic flow strengths increase with pT. The photon flow results are used to estimate the corresponding neutral pion flow.

Original languageEnglish (US)
Pages (from-to)129-146
Number of pages18
JournalNuclear Physics A
Volume762
Issue number1-2
DOIs
StatePublished - Nov 28 2005

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transverse momentum
momentum
collisions
photons
fragmentation
pions
spectrometers
anisotropy
estimates

Keywords

  • Deduced neutral pion flow features
  • Measured inclusive photons direct and elliptic flow vs. centrality, rapidity and transverse momentum
  • Nuclear reactions Pb(Pb, X), E=158 GeV/nucleon

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Aggarwal, M. M., Ahammed, Z., Angelis, A. L. S., Antonenko, V., Arefiev, V., Astakhov, V., ... Young, G. R. (2005). Centrality and transverse momentum dependence of collective flow in 158 A GeV Pb + Pb collisions measured via inclusive photons. Nuclear Physics A, 762(1-2), 129-146. https://doi.org/10.1016/j.nuclphysa.2005.08.004

Centrality and transverse momentum dependence of collective flow in 158 A GeV Pb + Pb collisions measured via inclusive photons. / Aggarwal, M. M.; 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.; Bathe, S.; Batiounia, B.; Bernier, T.; Bhatia, V. S.; Blume, C.; Bucher, D.; Büsching, H.; Carlén, L.; Chattopadhyay, S.; Decowski, M. P.; Delagrange, H.; Donni, P.; Dutta Majumdar, M. R.; Dubey, A. K.; El Chenawi, K.; Enosawa, K.; Fokin, S.; Frolov, V.; Ganti, M. S.; Garpman, S.; Gavrishchuk, O.; Geurts, F. J M; Ghosh, T. K.; Glasow, R.; Guskov, B.; Gustafsson, H. A.; Gutbrod, H. H.; Hrivnacova, I.; Ippolitov, M.; Kalechofsky, H.; Kamermans, R.; Karadjev, K.; Karpio, K.; Kolb, B. W.; Kosarev, I.; Koutcheryaev, I.; Kugler, A.; Kulinich, P.; Kurata, M.; Lebedev, A.; Löhner, H.; Luquin, L.; Mahapatra, D. P.; Manko, V.; Martin, M.; Martínez, G.; Maximov, A.; Miake, Y.; Mishra, G. C.; Mohanty, B.; Mora, M. J.; Morrison, D.; Mukhanova, T.; Mukhopadhyay, D. S.; Naef, H.; Nandi, B. K.; Nayak, S. K.; Nayak, T. K.; Nianine, A.; Nikitine, V.; Nikolaev, S.; Nilsson, P.; Nishimura, S.; Nomokonov, P.; Nystrand, J.; Oskarsson, A.; Otterlund, I.; Peitzmann, T.; Peressounko, D.; Petracek, V.; Phatak, S. C.; Pinganaud, W.; Plasil, F.; Purschke, M. L.; Rak, J.; Raniwala, R.; Raniwala, S.; Rao, N. K.; Retiere, F.; Reygers, K.; Roland, G.; Rosselet, L.; Roufanov, I.; Roy, C.; Rubio, J. M.; Sambyal, S. S.; Santo, R.; Sato, S.; Schlagheck, H.; Schmidt, H. R.; Schutz, Y.; Shabratova, G.; Shah, T. H.; Sibiriak, I.; Siemiarczuk, T.; Silvermyr, D.; Sinha, B. C.; Slavine, N.; Söderström, K.; Sood, G.; Sorensen, S. P.; Stankus, P.; Stefanek, G.; Steinberg, P.; Stenlund, E.; Sumbera, M.; Svensson, T.; Tsvetkov, A.; Tykarski, L.; Pijll, E. C V D; Eijndhoven, N. V.; Nieuwenhuizen, G. J V; Vinogradov, A.; Viyogi, Y. P.; Vodopianov, A.; Vörös, S.; Wyslouch, B.; Young, G. R.

In: Nuclear Physics A, Vol. 762, No. 1-2, 28.11.2005, p. 129-146.

Research output: Contribution to journalArticle

Aggarwal, MM, Ahammed, Z, Angelis, ALS, Antonenko, V, Arefiev, V, Astakhov, V, Avdeitchikov, V, Awes, TC, Baba, PVKS, Badyal, SK, Bathe, S, Batiounia, B, Bernier, T, Bhatia, VS, Blume, C, Bucher, D, Büsching, H, Carlén, L, Chattopadhyay, S, Decowski, MP, Delagrange, H, Donni, P, Dutta Majumdar, MR, Dubey, AK, El Chenawi, K, Enosawa, K, Fokin, S, Frolov, V, Ganti, MS, Garpman, S, Gavrishchuk, O, Geurts, FJM, Ghosh, TK, Glasow, R, Guskov, B, Gustafsson, HA, Gutbrod, HH, Hrivnacova, I, Ippolitov, M, Kalechofsky, H, Kamermans, R, Karadjev, K, Karpio, K, Kolb, BW, Kosarev, I, Koutcheryaev, I, Kugler, A, Kulinich, P, Kurata, M, Lebedev, A, Löhner, H, Luquin, L, Mahapatra, DP, Manko, V, Martin, M, Martínez, G, Maximov, A, Miake, Y, Mishra, GC, Mohanty, B, Mora, MJ, Morrison, D, Mukhanova, T, Mukhopadhyay, DS, Naef, H, Nandi, BK, Nayak, SK, Nayak, TK, Nianine, A, Nikitine, V, Nikolaev, S, Nilsson, P, Nishimura, S, Nomokonov, P, Nystrand, J, Oskarsson, A, Otterlund, I, Peitzmann, T, Peressounko, D, Petracek, V, Phatak, SC, Pinganaud, W, Plasil, F, Purschke, ML, Rak, J, Raniwala, R, Raniwala, S, Rao, NK, Retiere, F, Reygers, K, Roland, G, Rosselet, L, Roufanov, I, Roy, C, Rubio, JM, Sambyal, SS, Santo, R, Sato, S, Schlagheck, H, Schmidt, HR, Schutz, Y, Shabratova, G, Shah, TH, Sibiriak, I, Siemiarczuk, T, Silvermyr, D, Sinha, BC, Slavine, N, Söderström, K, Sood, G, Sorensen, SP, Stankus, P, Stefanek, G, Steinberg, P, Stenlund, E, Sumbera, M, Svensson, T, Tsvetkov, A, Tykarski, L, Pijll, ECVD, Eijndhoven, NV, Nieuwenhuizen, GJV, Vinogradov, A, Viyogi, YP, Vodopianov, A, Vörös, S, Wyslouch, B & Young, GR 2005, 'Centrality and transverse momentum dependence of collective flow in 158 A GeV Pb + Pb collisions measured via inclusive photons', Nuclear Physics A, vol. 762, no. 1-2, pp. 129-146. https://doi.org/10.1016/j.nuclphysa.2005.08.004
Aggarwal, M. M. ; 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. ; Bathe, S. ; Batiounia, B. ; Bernier, T. ; Bhatia, V. S. ; Blume, C. ; Bucher, D. ; Büsching, H. ; Carlén, L. ; Chattopadhyay, S. ; Decowski, M. P. ; Delagrange, H. ; Donni, P. ; Dutta Majumdar, M. R. ; Dubey, A. K. ; El Chenawi, K. ; Enosawa, K. ; Fokin, S. ; Frolov, V. ; Ganti, M. S. ; Garpman, S. ; Gavrishchuk, O. ; Geurts, F. J M ; Ghosh, T. K. ; Glasow, R. ; Guskov, B. ; Gustafsson, H. A. ; Gutbrod, H. H. ; Hrivnacova, I. ; Ippolitov, M. ; Kalechofsky, H. ; Kamermans, R. ; Karadjev, K. ; Karpio, K. ; Kolb, B. W. ; Kosarev, I. ; Koutcheryaev, I. ; Kugler, A. ; Kulinich, P. ; Kurata, M. ; Lebedev, A. ; Löhner, H. ; Luquin, L. ; Mahapatra, D. P. ; Manko, V. ; Martin, M. ; Martínez, G. ; Maximov, A. ; Miake, Y. ; Mishra, G. C. ; Mohanty, B. ; Mora, M. J. ; Morrison, D. ; Mukhanova, T. ; Mukhopadhyay, D. S. ; Naef, H. ; Nandi, B. K. ; Nayak, S. K. ; Nayak, T. K. ; Nianine, A. ; Nikitine, V. ; Nikolaev, S. ; Nilsson, P. ; Nishimura, S. ; Nomokonov, P. ; Nystrand, J. ; Oskarsson, A. ; Otterlund, I. ; Peitzmann, T. ; Peressounko, D. ; Petracek, V. ; Phatak, S. C. ; Pinganaud, W. ; Plasil, F. ; Purschke, M. L. ; Rak, J. ; Raniwala, R. ; Raniwala, S. ; Rao, N. K. ; Retiere, F. ; Reygers, K. ; Roland, G. ; Rosselet, L. ; Roufanov, I. ; Roy, C. ; Rubio, J. M. ; Sambyal, S. S. ; Santo, R. ; Sato, S. ; Schlagheck, H. ; Schmidt, H. R. ; Schutz, Y. ; Shabratova, G. ; Shah, T. H. ; Sibiriak, I. ; Siemiarczuk, T. ; Silvermyr, D. ; Sinha, B. C. ; Slavine, N. ; Söderström, K. ; Sood, G. ; Sorensen, S. P. ; Stankus, P. ; Stefanek, G. ; Steinberg, P. ; Stenlund, E. ; Sumbera, M. ; Svensson, T. ; Tsvetkov, A. ; Tykarski, L. ; Pijll, E. C V D ; Eijndhoven, N. V. ; Nieuwenhuizen, G. J V ; Vinogradov, A. ; Viyogi, Y. P. ; Vodopianov, A. ; Vörös, S. ; Wyslouch, B. ; Young, G. R. / Centrality and transverse momentum dependence of collective flow in 158 A GeV Pb + Pb collisions measured via inclusive photons. In: Nuclear Physics A. 2005 ; Vol. 762, No. 1-2. pp. 129-146.
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title = "Centrality and transverse momentum dependence of collective flow in 158 A GeV Pb + Pb collisions measured via inclusive photons",
abstract = "Directed and elliptic flow of inclusive photons near mid-rapidity in 158 A GeV Pb + Pb collisions has been studied. The data have been obtained with the photon spectrometer LEDA of the WA98 experiment at the CERN SPS. The flow strength has been measured for various centralities as a function of pT and rapidity over 0.18 < pT < 1.5 GeV/c and 2.3 < y < 2.9. The angular anisotropy has been studied relative to an event plane obtained in the target fragmentation region that shows the elliptic flow to be in-plane. The elliptic flow has also been studied using two-particle correlations and shown to give similar results. A small directed flow component is observed. Both the directed and elliptic flow strengths increase with pT. The photon flow results are used to estimate the corresponding neutral pion flow.",
keywords = "Deduced neutral pion flow features, Measured inclusive photons direct and elliptic flow vs. centrality, rapidity and transverse momentum, Nuclear reactions Pb(Pb, X), E=158 GeV/nucleon",
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TY - JOUR

T1 - Centrality and transverse momentum dependence of collective flow in 158 A GeV Pb + Pb collisions measured via inclusive photons

AU - Aggarwal, M. M.

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 - Bathe, S.

AU - Batiounia, B.

AU - Bernier, T.

AU - Bhatia, V. S.

AU - Blume, C.

AU - Bucher, D.

AU - Büsching, H.

AU - Carlén, L.

AU - Chattopadhyay, S.

AU - Decowski, M. P.

AU - Delagrange, H.

AU - Donni, P.

AU - Dutta Majumdar, M. R.

AU - Dubey, A. K.

AU - El Chenawi, K.

AU - Enosawa, K.

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 - Guskov, B.

AU - Gustafsson, H. A.

AU - Gutbrod, H. H.

AU - Hrivnacova, I.

AU - Ippolitov, M.

AU - Kalechofsky, H.

AU - Kamermans, R.

AU - Karadjev, K.

AU - Karpio, K.

AU - Kolb, B. W.

AU - Kosarev, I.

AU - Koutcheryaev, I.

AU - Kugler, A.

AU - Kulinich, P.

AU - Kurata, M.

AU - Lebedev, A.

AU - Löhner, H.

AU - Luquin, L.

AU - Mahapatra, D. P.

AU - Manko, V.

AU - Martin, M.

AU - Martínez, G.

AU - Maximov, A.

AU - Miake, Y.

AU - Mishra, G. C.

AU - Mohanty, B.

AU - Mora, M. J.

AU - Morrison, D.

AU - Mukhanova, T.

AU - Mukhopadhyay, D. S.

AU - Naef, H.

AU - Nandi, B. K.

AU - Nayak, S. K.

AU - Nayak, T. K.

AU - Nianine, A.

AU - Nikitine, V.

AU - Nikolaev, S.

AU - Nilsson, P.

AU - Nishimura, S.

AU - Nomokonov, P.

AU - Nystrand, J.

AU - Oskarsson, A.

AU - Otterlund, I.

AU - Peitzmann, T.

AU - Peressounko, D.

AU - Petracek, V.

AU - Phatak, S. C.

AU - Pinganaud, W.

AU - Plasil, F.

AU - Purschke, M. L.

AU - Rak, J.

AU - Raniwala, R.

AU - Raniwala, 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 - Sambyal, S. S.

AU - Santo, R.

AU - Sato, S.

AU - Schlagheck, H.

AU - Schmidt, H. R.

AU - Schutz, Y.

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 - Sood, G.

AU - Sorensen, S. P.

AU - Stankus, P.

AU - Stefanek, G.

AU - Steinberg, P.

AU - Stenlund, E.

AU - Sumbera, M.

AU - Svensson, T.

AU - Tsvetkov, A.

AU - Tykarski, L.

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 - Young, G. R.

PY - 2005/11/28

Y1 - 2005/11/28

N2 - Directed and elliptic flow of inclusive photons near mid-rapidity in 158 A GeV Pb + Pb collisions has been studied. The data have been obtained with the photon spectrometer LEDA of the WA98 experiment at the CERN SPS. The flow strength has been measured for various centralities as a function of pT and rapidity over 0.18 < pT < 1.5 GeV/c and 2.3 < y < 2.9. The angular anisotropy has been studied relative to an event plane obtained in the target fragmentation region that shows the elliptic flow to be in-plane. The elliptic flow has also been studied using two-particle correlations and shown to give similar results. A small directed flow component is observed. Both the directed and elliptic flow strengths increase with pT. The photon flow results are used to estimate the corresponding neutral pion flow.

AB - Directed and elliptic flow of inclusive photons near mid-rapidity in 158 A GeV Pb + Pb collisions has been studied. The data have been obtained with the photon spectrometer LEDA of the WA98 experiment at the CERN SPS. The flow strength has been measured for various centralities as a function of pT and rapidity over 0.18 < pT < 1.5 GeV/c and 2.3 < y < 2.9. The angular anisotropy has been studied relative to an event plane obtained in the target fragmentation region that shows the elliptic flow to be in-plane. The elliptic flow has also been studied using two-particle correlations and shown to give similar results. A small directed flow component is observed. Both the directed and elliptic flow strengths increase with pT. The photon flow results are used to estimate the corresponding neutral pion flow.

KW - Deduced neutral pion flow features

KW - Measured inclusive photons direct and elliptic flow vs. centrality, rapidity and transverse momentum

KW - Nuclear reactions Pb(Pb, X), E=158 GeV/nucleon

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U2 - 10.1016/j.nuclphysa.2005.08.004

DO - 10.1016/j.nuclphysa.2005.08.004

M3 - Article

AN - SCOPUS:27644570713

VL - 762

SP - 129

EP - 146

JO - Nuclear Physics A

JF - Nuclear Physics A

SN - 0375-9474

IS - 1-2

ER -