scholarly journals Antishadowing Effect on Charmonium Production at a Fixed-Target Experiment Using LHC Beams

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Kai Zhou ◽  
Zhengyu Chen ◽  
Pengfei Zhuang
Keyword(s):  
Beam Energy ◽  
Forward Rapidity ◽  
Fixed Target ◽  
Charmonium Production ◽  
Matter Effects ◽  
Nuclear Modification ◽  
Nuclear Modification Factors ◽  
Target Experiment ◽  
Transport Approach ◽  
Fixed Target Experiment

We investigate charmonium production in Pb + Pb collisions at LHC beam energyElab=2.76A TeV at fixed-target experiment (sNN= 72 GeV). In the frame of a transport approach including cold and hot nuclear matter effects on charmonium evolution, we focus on the antishadowing effect on the nuclear modification factorsRAAandrAAfor theJ/ψyield and transverse momentum. The yield is more suppressed at less forward rapidity (ylab≃2) than that at very forward rapidity (ylab≃4) due to the shadowing and antishadowing in different rapidity bins.

scholarly journals NEW RESULTS AND PERSPECTIVES ON RAA MEASUREMENTS BELOW 20 GeV CM-ENERGY AT FIXED TARGET MACHINES

2007 ◽  
Vol 16 (07n08) ◽  
pp. 2516-2521 ◽  
Author(s):  
◽  
ANDRÁS LÁSZLÓ ◽  
ZOLTÁN FODOR ◽  
GYÓRGY VESZTERGOMBI
Keyword(s):  
Beam Energy ◽  
Fixed Target ◽  
Nuclear Modification ◽  
Momentum Spectra ◽  
Modification Factor ◽  
Transverse Momentum Spectra ◽  
Nuclear Modification Factors ◽  
Very High ◽  
Na49 Experiment ◽  
Insight Into

Transverse momentum spectra of π± at midrapidity are measured at high pT in p + p and p + Pb collisions at 158 GeV/nucleon beam energy by the NA49 experiment. This study is complementary to our previous results on the same spectra from Pb + Pb collisions. The nuclear modification factors RA+A/p+p, Rp+A/p+p and RA+A/p+A as a function of pT are extracted and compared to RHIC measurements, thus providing insight into the energy dependence of nuclear modification. The modification factor RA+A/p+A proved to be consistent with our previous results on the central to peripheral modification factor RCP. The limitation of our current pT range is discussed and planned future upgrades are outlined. Some aspects of the FAIR-CBM experiment are also presented as a natural future continuation of the measurements at very high pT.

scholarly journals Spin physics at a fixed-target experiment at the LHC (AFTER@LHC)

2014 ◽  
Vol 45 (1) ◽  
pp. 336-337 ◽  
Author(s):  
A. Rakotozafindrabe ◽  
M. Anselmino ◽  
R. Arnaldi ◽  
S. J. Brodsky ◽  
V. Chambert ◽  
...  
Keyword(s):  
Fixed Target ◽  
Spin Physics ◽  
Target Experiment ◽  
Fixed Target Experiment

scholarly journals Quarkonium measurements in heavy-ion collisions with the STAR experiment

2018 ◽  
Vol 171 ◽  
pp. 18015
Author(s):  
Xinjie Huang
Keyword(s):  
Transverse Momentum ◽  
Nuclear Matter ◽  
Heavy Ion Collisions ◽  
Theoretical Calculations ◽  
Heavy Ion ◽  
Matter Effects ◽  
Nuclear Modification ◽  
Ion Collisions ◽  
Star Experiment ◽  
Nuclear Modification Factors

In these proceedings, we present the latest measurements of J/ψ and ϒ by the STAR experiment. The J/ψ and ϒ production measured in p+p collisions provide new baselines for similar measurements in Au+Au collisions, while the measurements in p+Au collisions can help quantify the cold nuclear matter effects. The J/ψ υ2 is measured in both U+U and Au+Au collisions to place constraints on the amount of J/ψ arising from recombination of deconfined charm and anti-charm pairs. Furthermore, the nuclear modification factors for ground and excited ϒ states as a function of transverse momentum and centrality are presented, and compared to those measured at the LHC as well as to theoretical calculations.

scholarly journals Feasibility Studies for Quarkonium Production at a Fixed-Target Experiment Using the LHC Proton and Lead Beams (AFTER@LHC)

2015 ◽  
Vol 2015 ◽  
pp. 1-15 ◽  
Author(s):  
L. Massacrier ◽  
B. Trzeciak ◽  
F. Fleuret ◽  
C. Hadjidakis ◽  
D. Kikola ◽  
...  
Keyword(s):  
Feasibility Studies ◽  
Fixed Target ◽  
Detection Techniques ◽  
Target Mode ◽  
Quarkonium Production ◽  
Target Experiment ◽  
Conventional Detection ◽  
Fixed Target Experiment

Being used in the fixed-target mode, the multi-TeV LHC proton and lead beams allow for studies of heavy-flavour hadroproduction with unprecedented precision at backward rapidities, far negative Feynman-x, using conventional detection techniques. At the nominal LHC energies, quarkonia can be studied in detail inp+p,p+d, andp+Acollisions atsNN≃115 GeV and in Pb +pand Pb +Acollisions atsNN≃72 GeV with luminosities roughly equivalent to that of the collider mode that is up to 20 fb−1 yr−1inp+pandp+dcollisions, up to 0.6 fb−1 yr−1inp+Acollisions, and up to 10 nb−1 yr−1in Pb +Acollisions. In this paper, we assess the feasibility of such studies by performing fast simulations using the performance of a LHCb-like detector.

scholarly journals Prospective for A Fixed-Target ExpeRiment at the LHC: AFTER @ LHC

2013 ◽  
Author(s):  
Jean-Philippe Lansberg ◽  
Valérie Chambert ◽  
Jean-Pierre Didelez ◽  
Bernard Genolini ◽  
Cynthia Hadjidakis ◽  
...  
Keyword(s):  
Fixed Target ◽  
Target Experiment ◽  
Fixed Target Experiment

scholarly journals Prospective for a fixed-target experiment at the LHC: AFTER @ LHC

2012 ◽  
Author(s):  
Jean-Philippe Lansberg ◽  
Valérie Chambert ◽  
Jean-Pierre Didelez ◽  
Bernard Genolini ◽  
Cynthia Hadjidakis ◽  
...  
Keyword(s):  
Fixed Target ◽  
Target Experiment ◽  
Fixed Target Experiment

scholarly journals Feasibility Studies for Single Transverse-Spin Asymmetry Measurements at a Fixed-Target Experiment Using the LHC Proton and Lead Beams (AFTER@LHC)

2017 ◽  
Vol 58 (4) ◽  
Author(s):  
Daniel Kikoła ◽  
Miguel García Echevarria ◽  
Cynthia Hadjidakis ◽  
Jean-Philippe Lansberg ◽  
Cédric Lorcé ◽  
...  
Keyword(s):  
Spin Asymmetry ◽  
Feasibility Studies ◽  
Transverse Spin ◽  
Fixed Target ◽  
Target Experiment ◽  
Fixed Target Experiment

scholarly journals News from the NA61/SHINE experiment

2018 ◽  
Vol 191 ◽  
pp. 05002 ◽  
Author(s):  
Evgeny Andronov
Keyword(s):  
Critical Point ◽  
Collision Energy ◽  
Hadron Production ◽  
Fixed Target ◽  
Proton Proton ◽  
Model Predictions ◽  
The Status ◽  
Target Experiment ◽  
Onset Of Deconfinement ◽  
Fixed Target Experiment

NA61/SHINE is a fixed target experiment operating at the CERN SPS. Its main goals are to search for the critical point of strongly interacting matter and to study the onset of deconfinement. For these goals a scan of the two dimensional phase diagram (T-μB) is being performed at the SPS by measurements of hadron production in proton-proton, proton-nucleus and nucleusnucleus interactions as a function of collision energy. In this paper the status of the NA61/SHINE strong interaction physics programme is presented including recent results on proton intermittency, strongly intensive fluctuation observables of multiplicity and transverse momentum fluctuations. These measurements are expected to be sensitive to the correlation length in the produced matter and, therefore, have the ability to reveal the existence of the critical point via possible non-monotonic behavior. The NA61/SHINE results are compared to the model predictions.

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