Charm quark production in noncentral heavy ion collisions

Emelyanov, V. M.; Khodinov, A.; Klein, S. R.; Vogt, R.

doi:10.1103/physrevc.56.2726

Cited by 15 publications

(22 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The impact parameter dependence is calculated using Eqs. (3) and (4). When x lies in the shadowing region, central collisions are more shadowed than the average.…”

Section: Initial Conditions In a + A Collisionsmentioning

confidence: 99%

“…Since the inhomogeneous calculations agree within a few percent, the exact dependence cannot be experimentally distinguished; only the presence of inhomogeneity can be detected. This conclusion applies to a wide variety of observables [3]. Because the differences are small, we use only the S WS parameterization in the remainder of this work.…”

Section: Initial Conditions In a + A Collisionsmentioning

confidence: 99%

“…In one model, at high parton density gluons and sea quarks from one nucleon can interact with partons in an adjacent nucleon [16] so that shadowing is proportional to the local density, Eq. (2) [3,5]. Then…”

Section: Nuclear Parton Distributionsmentioning

confidence: 99%

“…We previously considered a variant, S i R , where shadowing is proportional to the thickness of a spherical nucleus at the collision point [3],…”

Section: Nuclear Parton Distributionsmentioning

confidence: 99%

“…The spatial dependence of shadowing is reflected in particle production as a function of impact parameter, b, which may be inferred from the total transverse energy, E T , produced in a heavy ion collision [3,4]. We discuss the relationship between E T and b including both hard and soft contributions.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Effect of shadowing on initial conditions, transverse energy, and hard probes in ultrarelativistic heavy ion collisions

et al. 2000

Self Cite

View full text Add to dashboard Cite

The effect of shadowing on the early state of ultrarelativistic heavy ion collisions is investigated along with transverse energy and hard process production, specifically Drell-Yan, J/ψ, and Υ production. We choose several parton distributions and parameterizations of nuclear shadowing, as well as the spatial dependence of shadowing, to study the influence of shadowing on relevant observables. Results are presented for Au+Au collisions at √ s N N = 200 GeV and Pb+Pb collisions at √ s N N = 5.5 TeV.

show abstract

“…The impact parameter dependence is calculated using Eqs. (3) and (4). When x lies in the shadowing region, central collisions are more shadowed than the average.…”

Section: Initial Conditions In a + A Collisionsmentioning

confidence: 99%

Section: Initial Conditions In a + A Collisionsmentioning

confidence: 99%

Section: Nuclear Parton Distributionsmentioning

confidence: 99%

“…We previously considered a variant, S i R , where shadowing is proportional to the thickness of a spherical nucleus at the collision point [3],…”

Section: Nuclear Parton Distributionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of shadowing on initial conditions, transverse energy, and hard probes in ultrarelativistic heavy ion collisions

et al. 2000

Self Cite

View full text Add to dashboard Cite

show abstract

The physics of ultraperipheral collisions at the LHC

et al. 2008

View full text Add to dashboard Cite

229 Pages, 121 figuresWe discuss the physics of large impact parameter interactions at the LHC: ultraperipheral collisions (UPCs). The dominant processes in UPCs are photon-nucleon (nucleus) interactions. The current LHC detector configurations can explore small $x$ hard phenomena with nuclei and nucleons at photon-nucleon center-of-mass energies above 1 TeV, extending the $x$ range of HERA by a factor of ten. In particular, it will be possible to probe diffractive and inclusive parton densities in nuclei using several processes. The interaction of small dipoles with protons and nuclei can be investigated in elastic and quasi-elastic $J/\psi$ and $\Upsilon$ production as well as in high $t$ $\rho^0$ production accompanied by a rapidity gap. Several of these phenomena provide clean signatures of the onset of the new high gluon density QCD regime. The LHC is in the kinematic range where nonlinear effects are several times larger than at HERA. Two-photon processes in UPCs are also studied. In addition, while UPCs play a role in limiting the maximum beam luminosity, they can also be used a luminosity monitor by measuring mutual electromagnetic dissociation of the beam nuclei. We also review similar studies at HERA and RHIC as well as describe the potential use of the LHC detectors for UPC measurements

show abstract

Shadowing effects on particle and transverse energy production

et al. 1999

Self Cite

View full text Add to dashboard Cite

The effect of shadowing on the early state of ultrarelativistic heavy ion collisions and transverse energy production is discussed. Results are presented for RHIC Au+Au collisions at √ s N N = 200 GeV and LHC Pb+Pb collisions at √ s N N = 5.5 TeV.The proton and neutron structure functions are modified in the nuclear environment [1], referred to here as shadowing. In most shadowing models, such as gluon recombination, the structure function modifications should be correlated with the local nuclear density. The E745 experiment studied the spatial distribution of structure functions with νN interactions in emulsion [2]. They found evidence of a spatial dependence but could not determine the form. The spatial dependence of shadowing is reflected in particle production as a function of impact parameter, b, which may be inferred from the total transverse energy, E T , produced in a heavy ion collision [3].At RHIC and LHC perturbative QCD processes are expected to be an important component of the total particle production. In particular, at early times, τ i ∼ 1/p T ≤ 1/p 0 ∼ 0.1 fm for p 0 ∼ 2 GeV, semihard production of low p T minijets sets the stage for further evolution [4].The average transverse energy of minijet production is proportional to the initial energy density and is the hard scattering contribution to the average total transverse energy. It is calculated within a specific detector acceptance ǫ(y). At leading order, the average transverse energy for a given minijet flavor, f , as a function of impact parameter is E *

show abstract

Charm quark production in noncentral heavy ion collisions

Cited by 15 publications

References 33 publications

Effect of shadowing on initial conditions, transverse energy, and hard probes in ultrarelativistic heavy ion collisions

Effect of shadowing on initial conditions, transverse energy, and hard probes in ultrarelativistic heavy ion collisions

The physics of ultraperipheral collisions at the LHC

Shadowing effects on particle and transverse energy production

Contact Info

Product

Resources

About