Upsilon production in U+U collisions at 193 GeV with the STAR experiment

Abstract

We present a measurement of the inclusive production of Upsilon mesons in U+U collisions at 193 GeV at mid-rapidity (|y| < 1). Previous studies in central Au+Au collisions at 200 GeV show a suppression of Upsilon(1S+2S+3S) production relative to expectations from the Upsilon yield in p+p collisions scaled by the number of binary nucleon-nucleon collisions (Ncoll), with an indication that the Upsilon(1S) state is also suppressed. The present measurement extends the number of participant nucleons in the collision (Npart) by 20% compared to Au+Au collisions, and allows us to study a system with higher energy density. We observe a suppression in both the Upsilon(1S+2S+3S) and Upsilon(1S) yields in central U+U data, which consolidates and extends the previously observed suppression trend in Au+Au collisions.

arXiv comment9 pages, 8 figures. Accepted in Phys.Rev.C

References in corpus (28)

• J/psi Production vs Centrality, Transverse Momentum, and Rapidity in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Observation of sequential Upsilon suppression in PbPb collisions
• Color Screening Melts Quarkonium
• Charmonium and bottomonium production in heavy-ion collisions
• J/psi Transverse Momentum Distribution in High Energy Nuclear Collisions
• Measurement of the Inclusive Upsilon production cross section in pp collisions at sqrt(s)=7 TeV
• Heavy Quarkonia in Quark-Gluon Plasma
• Heavy-quarkonium suppression in p-A collisions from parton energy loss in cold QCD matter
• Thermal Bottomonium Suppression at RHIC and LHC
• Multiplicity distribution and spectra of negatively charged hadrons in Au+Au collisions at sqrt(s_nn) = 130 GeV
• Bottomonia in the Quark-Gluon Plasma and their Production at RHIC and LHC
• String Breaking and Quarkonium Dissociation at Finite Temperatures
• J/Psi Suppression in an Equilibrating Parton Plasma
• Suppression of Upsilon Production in d+Au and Au+Au Collisions at sqrt(s_NN) = 200 GeV
• J/$\psi$ production at high transverse momenta in p+p and Au+Au collisions at sqrt(s_{NN}) = 200 GeV
• Quarkonium Binding and Dissociation: The Spectral Analysis of the QGP
• Bottomonium Production at RHIC and LHC
• Upsilon Production as a Probe for Early State Dynamics in High Energy Nuclear Collisions at RHIC
• On the combination of correlated estimates of a physics observable
• Measurement of ${\rm Y}$(1S+2S+3S) production in $p$$+$$p$ and Au$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Predictions of elliptic flow and nuclear modification factor from 200 GeV U + U collisions at RHIC
• High $p_T$ non-photonic electron production in $p$+$p$ collisions at $\sqrt{s}$ = 200 GeV
• Upsilon cross section in p+p collisions at sqrt(s) = 200 GeV
• Prospects for quarkonia production studies in U+U collisions
• Velocity Dependence of Charmonium Dissociation Temperature in High-Energy Nuclear Collisions
• Medium Modifications of Charm and Charmonium in High-Energy Heavy-Ion Collisions
• Q\bar{Q} modes in the Quark-Gluon Plasma
• Heavy quark thermodynamics in full QCD

Cited by in corpus (17)

• Quarkonium suppression in heavy-ion collisions: an open quantum system approach
• Heavy quarks and jets as probes of the QGP
• Color Screening and Regeneration of Bottomonia in High-Energy Heavy-Ion Collisions
• The Present and Future of QCD
• Extraction of the Heavy-Quark Potential from Bottomonium Observables in Heavy-Ion Collisions
• Regeneration of bottomonia in an open quantum systems approach
• Measurement of sequential ${\rm Y}$ suppression in Au+Au collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}$ = 200 GeV with the STAR experiment
• Production of ${\rm Y}(\text{nS})$ mesons in Pb+Pb and $pp$ collisions at 5.02 TeV
• BLUE: combining correlated estimates of physics observables within ROOT using the Best Linear Unbiased Estimate method
• Quarkonium propagation in the quark gluon plasma
• Pion, kaon, and (anti-)proton production in U+U Collisions at $\sqrt{s_{NN}}$ = 193 GeV measured with the STAR detector
• Highlights from STAR heavy ion program
• The impact of fluctuating initial conditions on bottomonium suppression in 5.02 TeV heavy-ion collisions
• Bottomonium suppression at RHIC and LHC in an open quantum system approach
• Quarkonium dissociation in perturbative QCD
• Transverse momentum dependent feed-down fractions for bottomonium production
• Quarkonium Production in the QGP