Longitudinal asymmetry and its effect on pseudorapidity distributions in Pb–Pb collisions at √sNN = 2.76 TeV
ALICE Collaboration. (2018). Longitudinal asymmetry and its effect on pseudorapidity distributions in Pb–Pb collisions at √sNN = 2.76 TeV. Physics Letters B, 781, 20-32. https://doi.org/10.1016/j.physletb.2018.03.051
Published inPhysics Letters B
© 2018 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license. Funded by SCOAP3.
First results on the longitudinal asymmetry and its effect on the pseudorapidity distributions in Pb–Pb collisions at = 2.76 TeV at the Large Hadron Collider are obtained with the ALICE detector. The longitudinal asymmetry arises because of an unequal number of participating nucleons from the two colliding nuclei, and is estimated for each event by measuring the energy in the forward neutron-Zero-Degree-Calorimeters (ZNs). The effect of the longitudinal asymmetry is measured on the pseudorapidity distributions of charged particles in the regions , and by taking the ratio of the pseudorapidity distributions from events corresponding to different regions of asymmetry. The coefficients of a polynomial fit to the ratio characterise the effect of the asymmetry. A Monte Carlo simulation using a Glauber model for the colliding nuclei is tuned to reproduce the spectrum in the ZNs and provides a relation between the measurable longitudinal asymmetry and the shift in the rapidity () of the participant zone formed by the unequal number of participating nucleons. The dependence of the coefficient of the linear term in the polynomial expansion, , on the mean value of is investigated. ...
ISSN Search the Publication Forum0370-2693
Publication in research information system
MetadataShow full item record
Except where otherwise noted, this item's license is described as © 2018 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license. Funded by SCOAP3.
Showing items with similar title or keywords.
Pseudorapidity distributions of charged particles as a function of mid- and forward rapidity multiplicities in pp collisions at √s = 5.02, 7 and 13 TeV ALICE Collaboration (Springer, 2021)The multiplicity dependence of the pseudorapidity density of charged particles in proton–proton (pp) collisions at centre-of-mass energies √s = 5.02, 7 and 13 TeV measured by ALICE is reported. The analysis relies on track ...
Charged-particle multiplicity distributions over a wide pseudorapidity range in proton-proton collisions at s√= 0.9, 7, and 8 TeV ALICE Collaboration (Springer, 2017)We present the charged-particle multiplicity distributions over a wide pseudorapidity range (−3.4<η<5.0) for pp collisions at s√=0.9,7, and 8 TeV at the LHC. Results are based on information from the Silicon Pixel Detector ...
Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at √sNN = 5.02 TeV ALICE Collaboration (Elsevier BV, 2017)We present the charged-particle pseudorapidity density in Pb–Pb collisions at √sNN = 5.02 TeV in centrality classes measured by ALICE. The measurement covers a wide pseudorapidity range from −3.5 to 5, which is sufficient ...
Measurement of charged pion double spin asymmetries at midrapidity in longitudinally polarized p+p collisions at √s = 510 GeV PHENIX Collaboration (American Physical Society, 2020)The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the longitudinal double spin asymmetries, A(LL), for charged pions at midrapidity (vertical bar eta vertical bar < 0.35) in longitudinally polarized ...
Cross section and longitudinal single-spin asymmetry AL for forward W±→μ±ν production in polarized p+p collisions at √s = 510 GeV PHENIX Collaboration (American Physical Society, 2018)We have measured the cross section and single-spin asymmetries from forward W ± → μ ± ν production in longitudinally polarized p + p collisions at √ s = 510 GeV using the PHENIX detector at the ...