scholarly journals Upsilon Production in Pb-Pb and p-Pb Collisions at Forward Rapidity with ALICE at the LHC

2014 ◽  
Vol 509 ◽  
pp. 012112
Author(s):  
Palash Khan ◽  
2012 ◽  
Vol 20 ◽  
pp. 214-221
Author(s):  
JAMAL JALILIAN-MARIAN

Forward rapidity di-hadron azimuthal angular correlations in high energy proton-nucleus and proton-proton collisions are sensitive to quadrupoles; traceless correlator of 4 Wilson lines whereas single inclusive particle production iNVOLVES only dipoles, traceless correlator of 2 Wilson lines. We discuss the progress made in understanding the energy (rapidity) evolution of the quadrupole as well as its various limits.


2019 ◽  
Vol 210 ◽  
pp. 02009
Author(s):  
Jean-Noël Capdevielle ◽  
Zbigniew Plebaniak ◽  
Barbara Szabelska ◽  
Jacek Szabelski

The model HDPM of CORSIKA has been updated and developed on the base of the recent measurements by ALICE, CMS, TOTEM, LHCb, LHCf... The new model, GHOST, involving a four-source production reproduces correctly the pseudo-rapidity distributions of charged secondaries and has been tested with the data in the mid and forward rapidity region, especially in the complex case of TOTEM, and also with the recent measurements of CMS, up to $ \sqrt s = 13\,{\rm{TeV}} $ (9.0 1016 eV in laboratory system). Special calculations have been devoted to the semi-inclusive data playing an important role in the cosmic ray simulation (fluctuations in earliest collisions, individual cascades measured at high altitude with high energy emulsion chambers). Taking into account the violation of KNO scaling, the negative binomial distribution (NegBin-expressed in terms of scaled elements) $ z = {n \mathord{\left/ {\vphantom {n {\bar {n}}}} \right. \kern-\nulldelimiterspace} {\bar {n}}} $ (n is the number of charged secondaries) has been used pointing out a possible asymptotic behaviour of total charged multiplicities at primary energies exceeding 40 TeV (8.5 1017 eV). Thus, larger reduction of the energies devoted to the leading cluster and very large multiplicity of secondary particles could suggest for EAS generated by primary protons a larger production of muons and a shower maximum at higher altitude.


2019 ◽  
Vol 798 ◽  
pp. 134926 ◽  
Author(s):  
S. Acharya ◽  
D. Adamová ◽  
S.P. Adhya ◽  
A. Adler ◽  
J. Adolfsson ◽  
...  
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1997 ◽  
Vol 12 (22) ◽  
pp. 3965-3973
Author(s):  
Peter Cho

We survey a few applications of recent theoretical ideas to problems in heavy quarkonium physics. We discuss the utility and limitations of fragmentation approximations for studying Psi and Upsilon production at several collider facilities. We also review the circumstances under which color-octet contributions to quarkonium cross sections are important. We emphasize that results obtained from methods stretched beyond their domains of validity should be regarded with caution.


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