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19922026
Showing 2008 · hep-phShow all

21 papers · 2 filters

hep-ph2008★ 112 cited

Evolution of twist-3 multi-parton correlation functions relevant to single transverse-spin asymmetry

Zhong-Bo Kang, Jian-Wei Qiu

We constructed two sets of twist-3 correlation functions that are responsible for generating the novel single transverse-spin asymmetry in the QCD collinear factorization approach.…

hep-ph2008★ 8 cited

Coherent and incoherent diffractive hadron production in pA collisions and gluon saturation

Kirill Tuchin

We study coherent and incoherent diffractive hadron production in high energy quarkonium--heavy nucleus collisions as a probe of the gluon saturation regime of QCD. Taking this pro…

hep-ph2008★ 29 cited

Manifestation of three-body forces in three-body Bethe-Salpeter and light-front equations

V. A. Karmanov, P. Maris

Bethe-Salpeter and light-front bound state equations for three scalar particles interacting by scalar exchange-bosons are solved in ladder truncation. In contrast to two-body syste…

hep-ph2008★ 10 cited

New avenue to the Parton Distribution Functions: Self-Organizing Maps

J. Carnahan, H. Honkanen, S. Liuti +2

Neural network algorithms have been recently applied to construct Parton Distribution Function (PDF) parametrizations which provide an alternative to standard global fitting proced…

hep-ph2008★ 26 cited

Low-mass lepton pair production at large transverse momentum

Zhong-Bo Kang, Jian-Wei Qiu, Werner Vogelsang

We study the transverse momentum distribution of low-mass lepton pairs produced in hadronic scattering, using the perturbative QCD factorization approach. We argue that the distrib…

hep-ph2008

Accessing tri-gluon correlations in the nucleon via the single spin asymmetry in open charm production

Zhong-Bo Kang, Jian-Wei Qiu, Werner Vogelsang +1

We calculate the single transverse-spin asymmetry for open charm production in collisions within the QCD collinear factorization approach. We include contributions from both t…

hep-ph2008★ 7 cited

The impossibility of heavy neutrino dark matter in the Littlest Higgs Model with T-parity: constraints from direct search

Paramita Dey, Sudhir Kumar Gupta, Biswarup Mukhopadhyaya

We consider the Littlest Higgs Model with T-parity (LHT), in the parameter region where a heavy neutrino is the lightest T-odd particle (LTP). Having emphasized that this correspon…

hep-ph2008★ 13 cited

Broken scale invariance, massless dilaton and confinement in QCD

Dmitri Kharzeev, Eugene Levin, Kirill Tuchin

Classical conformal invariance of QCD in the chiral limit is broken explicitly by scale anomaly. As a result, the lightest scalar particle (scalar glueball, or dilaton) in QCD is n…

hep-ph2008★ 41 cited

J/Psi production in heavy ion collisions and gluon saturation

Dmitri Kharzeev, Eugene Levin, Marzia Nardi +1

We calculate the inclusive J/Psi production in heavy ion collisions including the effects of gluon saturation in the wave functions of the colliding nuclei. We argue that the domin…

hep-ph2008★ 41 cited

Gluon saturation effects on J/Psi production in heavy ion collisions

Dmitri Kharzeev, Eugene Levin, Marzia Nardi +1

We consider a novel mechanism for J/Psi production in nuclear collisions arising due to the high density of gluons. We calculate the resulting J/Psi production cross section as a f…

hep-ph2008★ 42 cited

T-odd correlations from CP violating anomalous top-quark couplings revisited

Oleg Antipin, G. Valencia

We revisit the effect of CP violating anomalous top-quark couplings in production and decay. We consider production through gluon fusion (and light $q{\bar q}…

hep-ph2008★ 33 cited

Towards establishing the spin of warped gravitons

Oleg Antipin, Amarjit Soni

We study the possibility of experimental verification of the spin=2 nature of the Kaluza-Klein (KK) graviton which is predicted to exist in the extra-dimensional Randal-Sundrum (RS…

hep-ph2008★ 6 cited

Probing the low-x structure of nuclear matter with diffractive hadron production in pA collisions

Yang Li, Kirill Tuchin

We argue that hadron production in coherent diffraction of proton on a heavy nucleus provides a very sensitive probe of the low-x QCD dynamics. This process probes the BFKL dynamic…

hep-ph2008★ 67 cited

Single transverse-spin asymmetry for -meson production in semi-inclusive deep inelastic scattering

Zhong-Bo Kang, Jian-Wei Qiu

We study the single-transverse spin asymmetry for open charm production in the semi-inclusive lepton-hadron deep inelastic scattering. We calculate the asymmetry in terms of the QC…

hep-ph2008★ 13 cited

Realistic Earth matter effects and a method to acquire information about small θ_{13} in the detection of supernova neutrinos

Xin-Heng Guo, Ming-Yang Huang, Bing-Lin Young

In this paper, we first calculate the realistic Earth matter effects in the detection of type II supernova neutrinos at the Daya Bay reactor neutrino experiment which is currently…

hep-ph2008★ 48 cited

Collinear factorization for deep inelastic scattering structure functions at large Bjorken xB

Alberto Accardi, Jian-Wei Qiu

We examine the uncertainty of perturbative QCD factorization for hadron structure functions in deep inelastic scattering at a large value of the Bjorken variable xB. We analyze the…

hep-ph2008★ 6 cited

Spectrum of diffractively produced gluons in onium-nucleus collisions

Yang Li, Kirill Tuchin

We calculate spectrum of diffractively produced gluons in onium-heavy nucleus collisions at high energies. We show that it exhibits a characteristic dependence on nucleus atomic nu…

hep-ph2008★ 10 cited

Rare Decays with a Light CP-Odd Higgs Boson in the NMSSM

Xiao-Gang He, Jusak Tandean, G. Valencia

We have previously proposed a light pseudoscalar Higgs boson in the next-to-minimal supersymmetric standard model (NMSSM), the A_1^0, as a candidate to explain the HyperCP observat…

hep-ph2008

Baryon enhancement in high-density QCD and relativistic heavy ion collisions

Yang Li

We argue that the collinear factorization of the fragmentation functions in high energy nuclear collisions breaks down at transverse momenta due to high parton…

hep-ph2008★ 6 cited

Gluon multiplicity in coherent diffraction of onium on a heavy nucleus

Yang Li, Kirill Tuchin

We derive the cross section for the diffractive gluon production in high energy onium-nucleus collisions that includes the low-x evolution effects in the rapidity interval between…

hep-ph2008★ 29 cited

Transverse momentum broadening of vector boson production in high energy nuclear collisions

Zhong-Bo Kang, Jian-Wei Qiu

We calculate in perturbative QCD the transverse momentum broadening of vector boson production in high energy nuclear collisions. We evaluate the effect of initial-state parton mul…