The elliptic azimuthal anisotropy coefficient (v2) is measured for charm (D0) and strange (KS0, Λ, Ξ-, and Ω-) hadrons, using a data sample of p+Pb collisions collected by the CMS experiment, at a nucleon-nucleon center-of-mass energy of sNN=8.16 TeV. A significant positive v2 signal from long-range azimuthal correlations is observed for all particle species in high-multiplicity p+Pb collisions. The measurement represents the first observation of possible long-range collectivity for open heavy flavor hadrons in small systems. The results suggest that charm quarks have a smaller v2 than the lighter quarks, probably reflecting a weaker collective behavior. This effect is not seen in the larger PbPb collision system at sNN=5.02 TeV, also presented. © 2018 CERN.

Prafulla Kumar Behera

Department Of Physics

Binary alloys

Hadrons

Vanadium alloys

Azimuthal anisotropy

Azimuthal correlations

Center-of-mass energies

Collective behavior

Elliptic flows

High multiplicity

NUCLEON-NUCLEON

Pb-Pb collisions

Lead alloys

Fulltext

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Physical Review Letters

We report studies of charge-independent (CI) and charge-dependent (CD) two-particle differential-number correlation functions, R2Δη,Δφ, and transverse momentum (pT) correlation functions, P2Δη,Δφ, of charged particles in s=2.76TeV pp collisions with the PYTHIA and HERWIG models. Model predictions are presented for inclusive charged hadrons (h±), as well as pions (π±), kaons (K±), and (anti-)protons (p/p) in the ranges 0.2<pT≤2.0GeV/c, 2.0<pT≤5.0GeV/c, and 5.0<pT≤30.0GeV/c, with full azimuthal coverage in the range |η|<1.0. We compare the model predictions for the strength and shape of the R2 and P2 correlators as these pertain to recent measurements by the ALICE collaboration. The R2 and P2 correlation functions estimated with PYTHIA and HERWIG exhibit qualitatively similar near-side and away-side correlation structures but feature important differences. Our analysis indicates that comparative studies of R2 and P2 correlation functions would provide valuable insight towards the understanding of particle production in pp collisions, and by extension, should also be useful in studies of heavy-ion collisions. Comparison of the Δη dependence of R2 and P2 could contribute, in particular, to a better understanding and modeling of the angular ordering of particles produced by hadronization in jets, as well as a better description of jet fragmentation functions of identified species at low momentum fraction (z). © 2019 American Physical Society.

Physical Review C

Simulation studies of R2(Δη, Δφ) and P2(Δη, Δφ) correlation functions in pp collisions with the PYTHIA and HERWIG models

Non-ferrous Metals

Thermal fatigue damage of steel joints brazed with various nickel filler metals

Silva Iaponicarum

10.14746/sijp.2018.52/53/54/55

Communications in Nonlinear Science and Numerical Simulation

The stability of Bayesian Nash equilibrium of dynamic Cournot duopoly model with asymmetric information

LONG-TERM MONITORING OF WETLANDS VIA REMOTE SENSING AND GIS: A CASE STUDY FROM TURKEY

Revue de sémantique et pragmatique

10.4000/rsp.439

Elliptic Flow of Charm and Strange Hadrons in High-Multiplicity p+Pb Collisions at sNN =8.16 TeV

Journal	Data powered by TypesetPhysical Review Letters
Publisher	Data powered by TypesetAmerican Physical Society
ISSN	00319007
Open Access	No