Rapidity and azimuthal correlations of hadrons produced in high energy collisions
Author: Ji-cai Pan
Publisher:
Published: 1990
Total Pages: 95
ISBN-13:
DOWNLOAD EBOOKRead and Download eBook Full
Author: Ji-cai Pan
Publisher:
Published: 1990
Total Pages: 95
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 2010
Total Pages:
ISBN-13:
DOWNLOAD EBOOKThe STAR Collaboration at RHIC presents a systematic study of high transverse momentum charged di-hadron correlations at small azimuthal pair separation [Delta][phi], in d+Au and central Au+Au collisions at √s{sub NN} = 200 GeV. Significant correlated yield for pairs with large longitudinal separation [Delta][eta] is observed in central Au+Au, in contrast to d+Au collisions. The associated yield distribution in [Delta][eta] x [delta][phi] can be decomposed into a narrow jet-like peak at small angular separation which has a similar shape to that found in d+Au collisions, and a component which is narrow in [Delta][phi] and depends only weakly on [Delta][eta], the 'ridge'. Using two systematically independent analyses, finite ridge yield is found to persist for trigger p{sub t} > 6 GeV/c, indicating that it is correlated with jet production. The transverse momentum spectrum of hadrons comprising the ridge is found to be similar to that of bulk particle production in the measured range (2
Author:
Publisher:
Published: 2015
Total Pages: 25
ISBN-13:
DOWNLOAD EBOOKThe measurements of two-particle angular correlations between an identified strange hadron ( K0s or [Lambda]/[Lambda]- ) and a charged particle, emitted in pPb collisions, are presented over a wide range in pseudorapidity and full azimuth. The data, corresponding to an integrated luminosity of approximately 35 nb-1, were collected at a nucleon-nucleon center-of-mass energy (√sNN ) of 5.02 TeV with the CMS detector at the LHC. Our results are compared to semi-peripheral PbPb collision data at √sNN , covering similar charged-particle multiplicities in the events. The observed azimuthal correlations at large relative pseudorapidity are used to extract the second-order (v2) and third-order (v3) anisotropy harmonics of K0s and [Lambda]/[Lambda]- particles. These quantities are studied as a function of the charged-particle multiplicity in the event and the transverse momentum of the particles. For high-multiplicity pPb events, a clear particle species dependence of v2 and v3 is observed. For pT
Author:
Publisher:
Published: 2010
Total Pages: 13
ISBN-13:
DOWNLOAD EBOOKWe study the dihadron azimuthal correlation produced nearly back-to-back in unpolarized hadron collisions, arising from the product of two Collins fragmentation functions. Using the latest Collins fragmentation functions extracted from the global analysis of available experimental data, we make predictions for the azimuthalcorrelation of two-pion production in pp collisions at RHIC energies. We find that the correlation is sizable in the mid-rapidity region for moderate jet transverse momentum.
Author:
Publisher:
Published: 2003
Total Pages: 5
ISBN-13:
DOWNLOAD EBOOKAuthor: Satyajit Jena
Publisher: Springer Nature
Published:
Total Pages: 1353
ISBN-13: 9819702895
DOWNLOAD EBOOKAuthor: Li Yi
Publisher: Springer
Published: 2016-08-25
Total Pages: 97
ISBN-13: 1493964879
DOWNLOAD EBOOKThis thesis covers several important topics relevant to our understanding of quark-gluon plasma. It describes measurement of the third-order harmonic flow using two-particle correlations and isolation of flow and non-flow contributions to particle correlations in gold-gold collisions. The work also investigates long-range longitudinal correlations in small systems of deuteron-gold collisions. The former is related to the hydrodynamic transport properties of the quark-gluon plasma created in gold-gold collisions. The latter pertains to the question whether hydrodynamics is applicable to small systems, such as deuteron-gold collisions, and whether the quark-gluon plasma can be formed in those small-system collisions. The work presented in this thesis was conducted with the STAR experiment at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory, where the center-of-mass energy of both collision systems was a factor of 100 larger than the rest mass of the colliding nuclei. The results contained in this thesis are highly relevant to our quest for deeper understanding of quantum chromodynamics. The results obtained challenge the interpretation of previous works from several other experiments on small systems, and provoke a fresh look at the physics of hydrodynamics and particle correlations pertinent to high energy nuclear collisions.
Author: Fabrizio Grosa
Publisher: Springer Nature
Published: 2021-04-17
Total Pages: 227
ISBN-13: 3030711315
DOWNLOAD EBOOKThis thesis provides a comprehensive view of the physics of charmed hadrons in high-energy proton-proton and heavy-ion collisions. Given their large masses, charm quarks are produced in the early stage of a heavy-ion collision and they subsequently experience the full system evolution probing the colour-deconfined medium called quark-gluon plasma (QGP) created in such collisions. In this thesis, the mechanisms of charm-quark in-medium energy loss and hadronisation are discussed via the measurements of the production of charm mesons with (Ds+) and without (D+) strange-quark content in different colliding systems, using data collected by the ALICE experiment at the CERN LHC. The participation of the charm quark and its possible thermalisation in the QGP are studied via measurements of azimuthal anisotropies in the production of D+ mesons. Finally, the prospects for future measurements with the upgraded ALICE experimental apparatus and with more refined machine learning techniques are presented.
Author:
Publisher:
Published: 2013
Total Pages:
ISBN-13:
DOWNLOAD EBOOKAuthor: Stefan Kniege
Publisher:
Published: 2009
Total Pages: 157
ISBN-13:
DOWNLOAD EBOOK