Measurement of Long-Range Near-Side Two-Particle Angular Correlations in pp Collisions at root s=13 TeV

Title
Measurement of Long-Range Near-Side Two-Particle Angular Correlations in pp Collisions at root s=13 TeV
Author
김태정
Keywords
TRANSVERSE-MOMENTUM DEPENDENCE; PLUS PB COLLISIONS; ROOT-S(NN)=5.02 TEV; CHARGED-PARTICLES; ATLAS DETECTOR; FLOW; LHC
Issue Date
2016-04
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v. 116, NO 17, Page. 1-1
Abstract
Results on two-particle angular correlations for charged particles produced in pp collisions at a center-of- mass energy of 13 TeV are presented. The data were taken with the CMS detector at the LHC and correspond to an integrated luminosity of about 270 nb(-1). The correlations are studied over a broad range of pseudorapidity (vertical bar eta vertical bar ˂ 2.4) and over the full azimuth (phi) as a function of charged particle multiplicity and transverse momentum (p(T)). In high-multiplicity events, a long-range (vertical bar Delta eta vertical bar ˃ 2.0), near-side (Delta phi approximate to 0) structure emerges in the two-particle Delta eta-Delta phi correlation functions. The magnitude of the correlation exhibits a pronounced maximum in the range 1.0 ˂ p(T) ˂ 2.0 GeV/c and an approximately linear increase with the charged particle multiplicity, with an overall correlation strength similar to that found in earlier pp data at root s = 7 TeV. The present measurement extends the study of near-side long-range correlations up to charged particle multiplicities N-ch similar to 180, a region so far unexplored in pp collisions. The observed longrange correlations are compared to those seen in pp, pPb, and PbPb collisions at lower collision energies.
URI
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.116.172302http://hdl.handle.net/20.500.11754/45075
ISSN
0031-9007; 1079-7114
DOI
10.1103/PhysRevLett.116.172302
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COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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