Multiplicity distributions and charged-neutral fluctuations

Pramana

V Kumar^1,14  A Baldine^1,22  V Astakhov^1,22  A Agnihotri^1,14  Y Y Lee1^4,20  S Garpman1^1,2  V Myalkovski^1,22  E-J Buis1^1,15  Y Miake1^1,17  M R Dutta Majumdar^1,8  S Eliseev1⁷  H Löhner1⁹  M P Decowski1^1,15  H Kalechofsky¹³  V Frolov^1,22  G C Mishra1¹⁸  L Carlen1^1,2  A L S Angelis¹³  K-H Kampert^1,10  Tapan K Nayak^1,8  M M Aggarwal^1,3  P Donni¹³  R Cherbatchev^4,21  R Kamermans1^1,15  B Tatiounia^1,22  S K Badyal⁵  H A Gustafsson1^1,2  B Guskov^1,22  H¹  H Naef¹³  P Kulinich20^1,6  G Mgebrichvili^4,21  H Büsching^1,10  R Higuchi1^1,17  K Enosawa1^1,17  M S Ganti^1,8  S Kato1^1,17  V S Bhatia^1,3  S Chattopadhyay^1,8  A Maximov^1,22  B W Kolb1^4,20  I Langbein1^4,20  K Kurita1^1,17  T C Awes¹⁶  R Mehdiyev^1,22  F J M Geurts1^1,15  S Fokin^4,21  A Claussen^1,10  K B Bhalla^1,14  V Antonenko^4,21  H H Gutbrod10^1,11  R Glasow^1,10  A Buijs1^1,15  D S Mukhopadhyay^1,8  A Kugler1⁷  V Manko^4,21  V Djordjadze^1,22  T K Ghosh1⁹  C Blume1¹⁹  I Hrivnacova1⁷  D Morrison2^4,12  A K Dubey1¹⁸  M Ippolitov^4,21  D Mikhalev^1,22  P Foka¹³  T Chujo1^1,17  S K Gupta^1,14  I Kosarev^1,22  D P Mahapatra1¹⁸  L Barabach^1,22  A C Das^1,8  S Bathe^1,10  O Gavrishchuk^1,22  M Martin¹³  V Arefiev^1,22  P V K S Baba⁵  K Karadjev^4,21  Y Miyamoto1^1,17  V Chalyshev^1,22  T Bernier10^1,11  H Kim¹⁶  A Lebedev^4,21  Z Ahammed^1,8  V Avdeitchikov^1,22  I Doubovik^4,21  E-M Bohne1¹⁹  S Kees^1,10  C Barlag^1,10  R Bock1^4,20  H Feldmann^1,10  K Karpio1⁴  M Kurata1^1,17  K Kuzmin^1,22  D Bucher^1,10  I Koutcheryaev^4,21  B Mohanty1¹⁸  K E Chenawi1^1,2 

[1] University of Lund, Sweden$$;University of Panjab, India$$;INS, Warsaw, Poland$$;University of Jammu, India$$;MIT, Cambridge, USA$$;NPI, Rez, Czech Rep.$$;Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Kolkata 700 064, India$$;KVI, Groningen, The Netherlands$$;University of Münster, Germany$$;SUBATECH, Nantes, France$$;University of Tennessee, USA$$;University of Geneva, Switzerland$$;University of Rajasthan, India$$;NIKHEF, Utrecht, The Netherlands$$;ORNL, Oak Ridge, USA$$;University of Tsukuba, Japan$$;IOP, Bhubaneswar, India$$;University of Münster, German$$;GSI, Darmstadt, Germany$$;Kurchatov, Russia$$;JINR, Dubna, Russia$$

关键词: Quark-gluon plasma;    fluctuations;    disoriented chiral condensates.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

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 $N^{1.07± 0:05}_{ext{part}}$ and photons as $N^{1.12± 0:03}_{ext{part}}$ 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.

【 授权许可】

Unknown