Evidence for collective multiparticle correlations in p-Pb collisions

Name: Evidence for collective multiparticle correlations in p-Pb collisions
Author: Khachatryan, V., Işıldak, Bora

İsim	Evidence for collective multiparticle correlations in p-Pb collisions
Yazar	Khachatryan, V., Işıldak, Bora
Basım Tarihi:	2015-07-03
Basım Yeri	- American Physical Society
Konu	Lee-yang zeros, Angular-correlations, Nuclear collisions, Anisotropic flow, Ppb collisions, Proton-proton, Long-range, TeV, Eccentricities, Multiplicity
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	1079-7114
Kayıt Numarası	3e99d9b5-5e59-49d5-bd6d-8ed250e233cc
Lokasyon	Natural and Mathematical Sciences
Tarih	2015-07-03
Notlar	Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Örnek Metin	The second-order azimuthal anisotropy Fourier harmonics, v2, are obtained in p−Pb and PbPb collisions over a wide pseudorapidity (η) range based on correlations among six or more charged particles. The p-Pb data, corresponding to an integrated luminosity of 35 nb−1, were collected during the 2013 LHC p-Pb run at a nucleon-nucleon center-of-mass energy of 5.02 TeV by the CMS experiment. A sample of semiperipheral PbPb collision data at sNN−−−√=2.76 TeV, corresponding to an integrated luminosity of 2.5 μb−1 and covering a similar range of particle multiplicities as the p−Pb data, is also analyzed for comparison. The six- and eight-particle cumulant and the Lee-Yang zeros methods are used to extract the v2 coefficients, extending previous studies of two- and four-particle correlations. For both the p−Pb and PbPb systems, the v2 values obtained with correlations among more than four particles are consistent with previously published four-particle results. These data support the interpretation of a collective origin for the previously observed long-range (large Δη) correlations in both systems. The ratios of v2 values corresponding to correlations including different numbers of particles are compared to theoretical predictions that assume a hydrodynamic behavior of a p−Pb system dominated by fluctuations in the positions of participant nucleons. These results provide new insights into the multiparticle dynamics of collision systems with a very small overlapping region.
DOI	10.1103/PhysRevLett.115.012301
Cilt	115

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Evidence for collective multiparticle correlations in p-Pb collisions

Yazar Khachatryan, V., Işıldak, Bora

Basım Tarihi 2015-07-03

Basım Yeri - American Physical Society

Konu Lee-yang zeros, Angular-correlations, Nuclear collisions, Anisotropic flow, Ppb collisions, Proton-proton, Long-range, TeV, Eccentricities, Multiplicity

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 1079-7114

Kayıt Numarası 3e99d9b5-5e59-49d5-bd6d-8ed250e233cc

Lokasyon Natural and Mathematical Sciences

Tarih 2015-07-03

Notlar Due to copyright restrictions, the access to the full text of this article is only available via subscription.

Örnek Metin The second-order azimuthal anisotropy Fourier harmonics, v2, are obtained in p−Pb and PbPb collisions over a wide pseudorapidity (η) range based on correlations among six or more charged particles. The p-Pb data, corresponding to an integrated luminosity of 35 nb−1, were collected during the 2013 LHC p-Pb run at a nucleon-nucleon center-of-mass energy of 5.02 TeV by the CMS experiment. A sample of semiperipheral PbPb collision data at sNN−−−√=2.76 TeV, corresponding to an integrated luminosity of 2.5 μb−1 and covering a similar range of particle multiplicities as the p−Pb data, is also analyzed for comparison. The six- and eight-particle cumulant and the Lee-Yang zeros methods are used to extract the v2 coefficients, extending previous studies of two- and four-particle correlations. For both the p−Pb and PbPb systems, the v2 values obtained with correlations among more than four particles are consistent with previously published four-particle results. These data support the interpretation of a collective origin for the previously observed long-range (large Δη) correlations in both systems. The ratios of v2 values corresponding to correlations including different numbers of particles are compared to theoretical predictions that assume a hydrodynamic behavior of a p−Pb system dominated by fluctuations in the positions of participant nucleons. These results provide new insights into the multiparticle dynamics of collision systems with a very small overlapping region.

DOI 10.1103/PhysRevLett.115.012301

Cilt 115