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https://www.ias.ac.in/article/fulltext/pram/057/02-03/0285-0300

Quark-gluon plasma; fluctuations; disoriented chiral condensates

Results from the multiplicity distributions of inclusive photons and charged particles, scaling of particle multiplicities, event-by-event multiplicity fluctuations, and charged-neutral fluctuations in 158A GeV Pb+Pb collisions are presented and discussed. A scaling of charged particle multiplicity as N_part^1.07±0.05 and photos as N_part^1.12±0.03 have been observed, indicating violation of naive wounded nucleon model. The analysis of localized charged-neutral fluctuation indicates a model-independent demonstration of non-statistical fluctuations in both charged particles and photons in limited azimuthal regions. However, no correlated charged-neutral fluctuations are observed.

Tapan K Nayak¹ MM Aggarwal² A Agnihotri³ Z Ahammed¹ ALS Angelis⁴ V Antonenko⁵ V Arefiev⁶ V Astakhov⁶ V Avdeitchikov⁶ TC Awes⁷ PVKS Baba⁸ SK Badyal⁸ A Baldine⁶ L Barabach⁶ C Barlag⁹ S Bathe⁹ B Batiounia⁶ T Bernier¹⁰ KB Bhalla³ VS Bhatia² C Blume⁹ R Bock¹¹ E-M Bohne⁹ D Bucher⁹ A Buijs¹² E-J Buis¹² H Büsching⁹ L Carlen¹³ V Chalyshev⁶ S Chattopadhyay¹ KE Chenawi¹³ R Cherbatchev⁵ T Chujo¹⁴ A Claussen⁹ AC Das¹ MP Decowski¹² V Djordjadze⁶ P Donni⁴ I Doubovik¹ AK Dubey¹⁵ MR Dutta Majumdar¹ S Eliseev¹⁶ K Enosawa¹⁴ H Feldmann⁹ P Foka⁴ S Fokin¹ V Frolov⁶ MS Ganti¹ S Garpman¹³ O Gavrishchuk⁶ FJM Geurts¹² TK Ghosh¹⁷ R Glasow⁹ SK Gupta³ B Guskov⁶ HA Gustafsson¹³ HH Gutbrod¹⁰ R Higuchi¹⁴ I Hrivanacova¹⁶ M Ippolitov⁵ H Kalechofsky⁴ R Kamermans¹² K-H Kampert⁹ K Karadjev⁵ K Karpio¹⁸ S Kato¹⁴ S Kees⁹ H Kim⁷ BW Kolb¹¹ I Kosarev⁶ I Koutcheryaev⁵ A Kugler¹⁶ P Kulinich¹⁹ V Kumar³ M Kurata¹⁴ K Kurita¹⁴ N Kuzmin⁶ I Langbein¹¹ A Lebedev⁵ YY Lee¹¹ H Löhner¹⁷ DP Mahapatra¹⁵ V Manko⁵ M Martin⁴ A Maximov⁶ R Mehdiyev⁶ G Mgebrichvili⁵ Y Miake¹⁴ D Mikhalev⁶ GC Mishra¹⁵ Y Miyamoto¹⁴ B Mohanty¹⁵ D Morrison²⁰ DS Mukhopadhyay¹ V Myalkovski⁶ H Naef⁴ BK Nandi¹⁵ SK Nayak¹⁰ TK Nayak¹ S Neumaier¹¹ A Nianine⁵ V Nikitine⁶ S Nikolaev⁵ S Nishimura¹⁴ P Nomokov⁶ J Nystrand¹³ FE Obenshain²⁰ A Oskarsson¹³ I Otterlund¹³ M Pachr¹⁶ A Parfenov⁶ S Pavliouk⁶ T Peitzmann⁹ V Petracek¹⁶ F Plasil⁷ ML Purschke¹¹ B Raeven¹² J Rak¹⁶ R Raniwala³ S Raniwala³ VS Ramamurthy¹⁵ NK Rao⁸ F Retiere¹⁰ K Reygers⁹ G Roland¹⁹ L Rosselet⁴ I Roufanov⁶ JM Rubio⁴ SS Sambyal⁸ R Santo⁹ S Sato¹⁴ H Schlagheck⁹ H-R Schmidt¹¹ G Shabratova⁶ I Sibiriak⁵ T Siemiarczuk¹⁸ BC Sinha¹ N Slavine⁶ K Söderström¹³ N Solomey⁴ G Sood² SP Sørensen²⁰ P Stankus⁷ G Stefanek¹⁸ P Steinberg¹⁹ E Stenlund¹³ D Stüken⁹ M Sumbera¹⁶ T Svensson¹³ MD Trivedi¹ A Tsvetkov¹ C Twenhöfel¹² L Tykarski¹⁸ J Urbahn¹¹ NV Eijndhoven¹² WHV Heeringen¹² GJV Nieuwenhuizen¹⁹ A Vinogradov⁵ YP Viyogi¹ A Vodopianov⁶ S Vörös⁴ MA Vos¹² B Wyslouch¹⁹ K Yagi¹³ Y Yokota¹⁴ GR Young⁷

1. Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Kolkata - 700 064, India
2. University of Panjab, India
3. University of Rajasthan, India
4. University of Geneva, Switzerland
5. Kurchatov, Russia
6. JINR, Dubna, Russia
7. ORNL, Oak Ridge, USA
8. University of Jammu, India
9. University of Münster, Germany
10. SUBATECH, Nantes, France
11. GSI, Darmstadt, Germany
12. NIKHEF, Utrecht, The Netherlands
13. University of Lund, Sweden
14. University of Tsukuba, Japan
15. IOP, Bhubaneswar, India
16. NPI, Rez, Czech Rep.
17. KVI, Groningen, The Netherlands
18. INS, Warsaw, Poland
19. MIT, Cambridge, USA
20. University of Tennessee, USA

Published

9 August 2001