- η→γγ Decay Width via the Primakoff Cross Section
Author(s): T. E. Rodrigues, J. D. Arruda-Neto, J. Mesa, C. Garcia, K. Shtejer, D. Dale, I. Nakagawa, and P. L. Cole
Incoherent η photoproduction in nuclei is evaluated at forward angles within 4 to 9 GeV using a multiple scattering Monte Carlo cascade calculation with full η-nucleus final-state interactions. The Primakoff, nuclear coherent and nuclear incoherent components of the cross sections fit remarkably well previous measurements for Be and Cu from Cornell, suggesting a destructive interference between the Coulomb and nuclear coherent amplitudes for Cu. The inelastic background of the data is consistently attributed to the nuclear incoherent part, which is clearly not isotropic as previously considered in Cornell’s analysis. The respective Primakoff cross sections from Be and Cu give Γ_{η→γγ} =0.476(62) keV, where the quoted error is only statistical. This result is consistent with the Particle Data Group average of 0.510(26) keV and in sharp contrast (∼50%) with the value of 0.324(46) keV obtained at Cornell.
[Phys. Rev. Lett. 101, 012301] Published Thu Jul 03, 2008
- Spin and flavor strange quark content of the nucleon
Author(s): Harleen Dahiya and Manmohan Gupta
Several spin and flavor dependent parameters characterizing the strangeness content of the nucleon have been calculated in the chiral constituent quark model with configuration mixing (χCQM_{config} ) which is known to provide a satisfactory explanation of the “proton spin crisis” and related issues. In particular, we have calculated the strange spin polarization Δs, the strangeness contribution to the weak axial vector couplings Δ_{8} etc., strangeness contribution to the magnetic moments μ(p)^{s} etc., the strange quark flavor fraction f_{s} , the strangeness dependent quark flavor ratios 2s [over ¯] /u+d and 2s [over ¯] /u [over ¯] +d [over ¯] etc. Our results are consistent with the recent experimental observations.
[Phys. Rev. D 78, 014001] Published Thu Jul 03, 2008
- 0_{gs}^{+} →2_{1}^{+} Transition Strengths in ^{106} Sn and ^{108} Sn
Author(s): A. Ekström et al.
The reduced transition probabilities, B(E2;0_{gs}^{+} →2_{1}^{+} ), have been measured in the radioactive isotopes ^{108,106} Sn using subbarrier Coulomb excitation at the REX-ISOLDE facility at CERN. Deexcitation γ rays were detected by the highly segmented MINIBALL Ge-detector array. The results, B(E2;0_{gs}^{+} →2_{1}^{+} )=0.222(19)e^{2} b^{2} for ^{108} Sn and B(E2;0_{gs}^{+} →2_{1}^{+} )=0.195(39)e^{2} b^{2} for ^{106} Sn were determined relative to a stable ^{58} Ni target. The resulting B(E2) values are ∼30% larger than shell-model predictions and deviate from the generalized seniority model. This experimental result may point towards a weakening of the N=Z=50 shell closure.
[Phys. Rev. Lett. 101, 012502] Published Wed Jul 02, 2008
- Hadron structure at low Q^{2}
Author(s): Dieter Drechsel and Thomas Walcher
This review deals with the structure of hadrons, strongly interacting many-body systems consisting of quarks and gluons. These systems have a size of about 1fm , which shows up in scattering experiments at low momentum transfers Q in the GeV region. At this scale the running coupling constant of quantum chromodynamics (QCD), the established theory of the strong interactions, becomes divergent. It is therefore highly intriguing to explore this theory in the realm of its strong interaction regime. However, the quarks and gluons cannot be resolved at the GeV scale but have to be studied through their manifestations in the bound many-body systems, for instance, pions, nucleons, and their resonances. The review starts with an overview of QCD at low momentum transfer and a summary of the theoretical apparatus describing the interaction of hadrons with electrons and photons. Experimental results are presented for the most significant observables studied with the electromagnetic probe: form factors, polarizabilities, excitation spectra, and sum rules. These experimental findings are compared and interpreted with various theoretical approaches to QCD, such as phenomenological models with quarks and pions, dispersion relations as a means to connect observables from different experiments, and, directly based on the QCD Lagrangian, chiral perturbation theory and lattice gauge theory.
[Rev. Mod. Phys. 80, 731] Published Tue Jul 01, 2008
- Direct Mass Measurement of the Four-Neutron Halo Nuclide ^{8} He
Author(s): V. L. Ryjkov, M. Brodeur, T. Brunner, M. Smith, R. Ringle, A. Lapierre, F. Ames, P. Bricault, M. Dombsky, P. Delheij, D. Lunney, M. R. Pearson, and J. Dilling
A high-precision Penning trap mass measurement of the exotic ^{8} He nuclide (T_{1/2} =119 ms) has been carried out resulting in a reduction of the uncertainty of the halo binding energy by over an order of magnitude. The new mass, determined with a relative uncertainty of 9.2×10^{-8} (δm=690 eV) is 13 keV less bound than the previously accepted value. The mass measurement is of great relevance for the recent charge-radius measurement of ^{8} He [P. Mueller , Phys. Rev. Lett. 99, 252501 (2007).]. The ^{8} He mass is the first result from the newly-commissioned Penning trap: TITAN (TRIUMF’s Ion Trap for Atomic and Nuclear science) at the ISAC (Isotope Separator and Accelerator) radioactive beam facility at TRIUMF.
[Phys. Rev. Lett. 101, 012501] Published Tue Jul 01, 2008
- Semiclassical Origins of Density Functionals
Author(s): Peter Elliott, Donghyung Lee, Attila Cangi, and Kieron Burke
The relation between semiclassical and density-functional approximations is clarified. Semiclassical approximations both explain and improve upon density-gradient expansions for finite systems. We derive highly accurate density and kinetic energy functionals of the potential in one dimension.
[Phys. Rev. Lett. 100, 256406] Published Fri Jun 27, 2008
- Transverse momentum broadening of vector boson production in high energy nuclear collisions
Author(s): Zhong-Bo Kang and 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 multiple scattering for the production of the Drell-Yan virtual photon and W/Z bosons. We calculate both the initial- and final-state multiple scattering effect for the production of heavy quarkonia and their transverse momentum broadening in both nonrelativistic QCD and the color evaporation model of quarkonium formation. We find that J/ψ and Υ broadening in hadron-nucleus collision is close to 2C_{A} /C_{F} times the corresponding Drell-Yan broadening, which gives a good description of existing Fermilab data. Our calculations are also consistent with Relativistic Heavy Ion Collider data on J/ψ broadening in relativistic heavy ion collisions. We predict the transverse momentum broadening of vector boson (J/ψ, Υ, and W/Z) production in relativistic heavy ion collisions at the Large Hadron Collider and discuss the role of the vector boson broadening in diagnosing medium properties.
[Phys. Rev. D 77, 114027] Published Fri Jun 27, 2008
- Phase diagrams in the three-flavor Nambu–Jona-Lasinio model with the Polyakov loop
Author(s): Kenji Fukushima
We present extensive studies on hot and dense quark matter with two light and one heavy flavors in the Nambu–Jona-Lasinio model with the Polyakov loop (so-called PNJL model). First we discuss prescription dependence in choosing the Polyakov loop effective potential and propose a simple and rather sensible ansatz. We look over quantitative comparison to the lattice measurement to confirm that the model captures thermodynamic properties correctly. We then analyze the phase structure by changing the temperature, quark chemical potential, quark masses, and coupling constants. We particularly investigate how the effective U_{A} (1) restoration and the induced vector-channel interaction at finite density would affect the QCD critical point.
[Phys. Rev. D 77, 114028] Published Fri Jun 27, 2008
- Anomalous form factor of the neutral pion in an extended AdS/QCD model with Chern-Simons term
Author(s): H. R. Grigoryan and A. V. Radyushkin
We propose an extension of the hard-wall AdS/QCD model by including the Chern-Simons term required to reproduce the chiral anomaly of QCD. In the framework of this holographic model, we study the vertex function F_{πγ^{*} γ^{*} } (Q_{1}^{2} ,Q_{2}^{2} ) which accumulates information about the coupling of the pion to two (in general virtual) photons. We calculate the slope of the form factor with one real and one slightly virtual photon and show that it is close to experimental findings. We analyze the formal limit of large virtualities and establish that predictions of the holographic model analytically (including nontrivial dependence on the ratio of photon virtualities) coincide with those of perturbative QCD calculated for the asymptotic form of the pion distribution amplitude. We also investigate the generalized vector-meson-dominance structure of F_{πγ^{*} γ^{*} } (Q_{1}^{2} ,Q_{2}^{2} ) in the extended AdS/QCD model.
[Phys. Rev. D 77, 115024] Published Fri Jun 27, 2008
- Quasifree Photoproduction of η Mesons off the Neutron
Author(s): I. Jaegle et al. The CBELSA/TAPS Collaboration
Quasifree photoproduction of η mesons off nucleons bound in the deuteron has been measured with the CBELSA/TAPS detector for incident photon energies up to 2.5 GeV at the Bonn ELSA accelerator. The η mesons have been detected in coincidence with recoil protons and recoil neutrons, which allows a detailed comparison of the quasifree n(γ,η)n and p(γ,η)p reactions. The excitation function for η production off the neutron shows a pronounced bumplike structure at W=1.68 GeV (E_{γ} ≈1 GeV), which is absent for the proton.
[Phys. Rev. Lett. 100, 252002] Published Thu Jun 26, 2008
- Fast Equilibration of Hadrons in an Expanding Fireball
Author(s): J. Noronha-Hostler, C. Greiner, and I. A. Shovkovy
Because of long chemical equilibration times for standard hadronic reactions in a hadron gas in relativistic heavy ion collisions, it was suggested that hadrons are born into equilibrium after the quark gluon plasma is formed. We develop a dynamical scheme, using master equations, in which Hagedorn states contribute to fast chemical equilibration times of baryons and kaons, just below the critical temperature, estimates of which are derived analytically. The hadrons quickly equilibrate for an initial over- or underpopulation of Hagedorn states. Our particle ratios compared to BNL Relativistic Heavy Ion Collider show a close match.
[Phys. Rev. Lett. 100, 252301] Published Thu Jun 26, 2008
- Finite-Q^{2} corrections to parity-violating DIS
Author(s): T. Hobbs and W. Melnitchouk
Parity-violating deep inelastic scattering (PVDIS) has been proposed as an important new tool to extract the flavor and isospin dependence of parton distributions in the nucleon. We discuss finite-Q^{2} effects in PVDIS asymmetries arising from subleading kinematical corrections and longitudinal contributions to the γZ interference. For the proton, these need to be accounted for in order to accurately extract the d/u ratio at large x; for the deuteron they are important to consider when searching for evidence of charge symmetry violation in parton distributions or signals for physics beyond the standard model. We further explore the dependence of PVDIS asymmetries for polarized targets on the u and d helicity distributions at large x.
[Phys. Rev. D 77, 114023] Published Thu Jun 26, 2008
- Baryons in the large N limit of the massive two-dimensional Nambu-Jona-Lasinio model
Author(s): Christian Boehmer, Felix Karbstein, and Michael Thies
Baryons in the massive Nambu-Jona-Lasinio model in 1+1 dimensions (the massive chiral Gross-Neveu model) are studied in the limit of an infinite number of flavors. The baryon mass is evaluated for a wide range of bare fermion masses and filling fractions, combining analytical asymptotic expansions with a full numerical Hartree-Fock calculation.
[Phys. Rev. D 77, 125031] Published Thu Jun 26, 2008
- Quasielastic Barrier Distributions: Role of Particle Transfer Channels
Author(s): G. Pollarolo
The barrier distributions extracted from quasielastic excitation functions are analyzed in terms of a semiclassical model that incorporates both the excitation of the surface degrees of freedom and the exchange of neutrons and protons. It is shown that quasielastic cross sections receive sizable contributions from transfer reactions in all measured energy range.
[Phys. Rev. Lett. 100, 252701] Published Tue Jun 24, 2008
- Prospects for cosmic neutrino detection in tritium experiments in the case of hierarchical neutrino masses
Author(s): Mattias Blennow
We discuss the effects of neutrino mixing and the neutrino mass hierarchy when considering the capture of the cosmic neutrino background (CNB) on radioactive nuclei. The implications of mixing and hierarchy at future generations of tritium decay experiments are considered. We find that the CNB should be detectable at these experiments provided that the resolution for the kinetic energy of the outgoing electron can be pushed to a few 0.01 eV for the scenario with inverted neutrino mass hierarchy, about an order of magnitude better than that of the upcoming KATRIN experiment. Another order of magnitude improvement is needed in the case of normal neutrino mass hierarchy. We also note that mixing effects generally make the prospects for CNB detection worse due to an increased maximum energy of the normal beta decay background.
[Phys. Rev. D 77, 113014] Published Tue Jun 24, 2008
- Skyrmion vibration modes within the rational map ansatz
Author(s): W. T. Lin and B. Piette
We study the vibration modes of the Skyrme model within the rational map ansatz. We show that the vibrations of the radial profiles and the rational maps are decoupled and we consider explicitly the cases B=1, B=2, and B=4. We then compare our results with the vibration modes obtained numerically by Barnes et al. and show that qualitatively the rational map reproduces the vibration modes obtained numerically but that the vibration frequencies of these modes do not match very well.
[Phys. Rev. D 77, 125028] Published Tue Jun 24, 2008
- Pion dominance in R-parity violating supersymmetry induced neutrinoless double beta decay
Author(s): Amand Faessler, Thomas Gutsche, Sergey Kovalenko, and Fedor Šimkovic
At the quark level there are basically two types of contributions of R-parity violating supersymmetry (R̸_{p} SUSY) to neutrinoless double beta decay: the short-range contribution involving only heavy virtual superpartners and the long-range one with the virtual squark and neutrino. Hadronization of the effective operators, corresponding to these two types of contributions, may in general involve virtual pions in addition to close on-mass-shell nucleons. From the previous studies it is known that the short-range contribution is dominated by the pion exchange. In the present paper we show that this is also true for the long-range R̸_{p} SUSY contribution. Therefore, we conclude that the R̸_{p} SUSY contributes to the neutrinoless double beta decay dominantly via charged pion exchange between the decaying nucleons.
[Phys. Rev. D 77, 113012] Published Mon Jun 23, 2008
- Resolution of the multichannel anomaly in the extraction of S-matrix resonance-pole parameters
Author(s): Saša Ceci, Jugoslav Stahov, Alfred Švarc, Shon Watson, and Branimir Zauner
Within the framework of a mathematically well-defined coupled-channel T-matrix model we have improved the existing multichannel pole-extraction procedure based on the numerical analytic continuation of the channel propagator, and for the first time we present the full set of pole parameters for already published amplitudes. Standard single-channel pole-extraction method (speed plot) was then applied to those amplitudes and resulting sets of T-matrix poles were inspected. The anomaly has been established that in some partial waves the pole values extracted using the standard single-channel methods differ not only from the values obtained using the analytic continuation method, but also change from one reaction to another. Inspired by this peculiarity, we have developed a new single-channel pole-extraction method based solely on the assumption of the partial wave analyticity. Since the speed plot turns out to be the lowest order term of the proposed method, the anomaly is understood and resolved.
[Phys. Rev. D 77, 116007] Published Fri Jun 20, 2008
- Suppression of High-p_{T} Neutral Pion Production in Central Pb+Pb Collisions at sqrt[s_{NN} ] =17.3 GeV Relative to p+C and p+Pb Collisions
Author(s): M. M. Aggarwal et al. WA98 Collaboration
Neutral pion transverse momentum spectra were measured in p+C and p+Pb collisions at sqrt[s_{NN} ] =17.4 GeV at midrapidity (2.3≲η_{lab} ≲3.0) over the range 0.7≲p_{T} ≲3.5 GeV/c. The spectra are compared to π^{0} spectra measured in Pb+Pb collisions at sqrt[s_{NN} ] =17.3 GeV in the same experiment. For a wide range of Pb+Pb centralities (N_{part} ≲300), the yield of π^{0} ’s with p_{T} ≳2 GeV/c is larger than or consistent with the p+C or p+Pb yields scaled with the number of nucleon-nucleon collisions (N_{coll} ), while for central Pb+Pb collisions with N_{part} ≳350, the π^{0} yield is suppressed.
[Phys. Rev. Lett. 100, 242301] Published Thu Jun 19, 2008
- Finding the sigma pole by analytic extrapolation of ππ scattering data
Author(s): Irinel Caprini
I investigate the determination of the σ pole from ππ scattering data below the KK [over ¯] threshold, including the new precise results obtained from K_{e4} decay by NA48/2 Collaboration. I discuss also the experimental status of the threshold parameters a_{0}^{0} and b_{0}^{0} and the phase shift δ_{0}^{0} . In order to reduce the theoretical bias, I use a large class of analytic parametrizations of the isoscalar S wave, based on expansions in powers of conformal variables. The σ pole obtained with this method is consistent with the prediction based on ChPT and Roy equations. However, the theoretical uncertainties are now larger, reflecting the sensitivity of the pole position to the specific parametrizations valid in the physical region. I conclude that Roy equations offer the most precise method for the determination of the σ pole from ππ elastic scattering.
[Phys. Rev. D 77, 114019] Published Wed Jun 18, 2008
- Flavor diagonal and off-diagonal susceptibilities in a quasiparticle model of the quark-gluon plasma
Author(s): M. Bluhm and B. Kämpfer
The Taylor coefficients of flavor diagonal and off-diagonal susceptibilities as well as baryon number, isovector, and electric charge susceptibilities are considered within a phenomenological quasiparticle model of the quark-gluon plasma and successfully compared with available lattice QCD data up to fourth-order for two degenerate quark flavors. These susceptibility coefficients represent sensible probes of baryon-density effects in the equation of state. The baryon charge is carried, in our model, by quark-quasiparticle excitations for hard momenta.
[Phys. Rev. D 77, 114016] Published Tue Jun 17, 2008
- Collisional energy loss of a fast heavy quark in a quark-gluon plasma
Author(s): Stéphane Peigné and André Peshier
We discuss the average collisional energy loss dE/dx of a heavy quark crossing a quark-gluon plasma, in the limit of high quark energy E≫M^{2} /T, where M is the quark mass and T≪M is the plasma temperature. In the fixed coupling approximation, at leading order dE/dx∝α_{s}^{2} , with a coefficient which is logarithmically enhanced. The soft logarithm arising from t-channel scattering off thermal partons is well known, but a collinear logarithm from u-channel exchange had previously been overlooked. We also determine the constant beyond those leading logarithms. We then generalize our calculation of dE/dx to running coupling. We estimate the remaining theoretical uncertainty of dE/dx, which turns out to be quite large under Relativistic Heavy Ion Collider conditions. Finally, we point out an approximate relation between dE/dx and the QCD Debye mass, from which we derive an upper bound to dE/dx for all quark energies.
[Phys. Rev. D 77, 114017] Published Tue Jun 17, 2008
- π and σ mesons at finite temperature and density in the Nambu–Jona-Lasinio model with dimensional regularization
Author(s): T. Inagaki, D. Kimura, and A. Kvinikhidze
Dynamical symmetry breaking and meson masses are studied in the Nambu–Jona-Lasinio model at finite temperature and chemical potential using dimensional regularization. Since the model is not renormalizable in four space-time dimensions, physical results and parameters depend on the regularization method. Following the imaginary-time formalism, we introduce the temperature T and the chemical potential μ. The parameters of the model are fixed by calculating the pion mass and decay constant in dimensional regularization at T=μ=0.
[Phys. Rev. D 77, 116004] Published Tue Jun 17, 2008
- Longitudinal Double-Spin Asymmetry for Inclusive Jet Production in p [over →] +p [over →] Collisions at sqrt[s] =200 GeV
Author(s): B. I. Abelev et al. STAR Collaboration
We report a new STAR measurement of the longitudinal double-spin asymmetry A_{LL} for inclusive jet production at midrapidity in polarized p+p collisions at a center-of-mass energy of sqrt[s] =200 GeV. The data, which cover jet transverse momenta 5[Phys. Rev. Lett. 100, 232003] Published Fri Jun 13, 2008
- Source Breakup Dynamics in Au+Au Collisions at sqrt[s_{NN} ] =200 GeV via Three-Dimensional Two-Pion Source Imaging
Author(s): S. Afanasiev et al. PHENIX Collaboration
A three-dimensional correlation function obtained from midrapidity, low p_{T} , pion pairs in central Au+Au collisions at sqrt[s_{NN} ] =200 GeV is studied. The extracted model-independent source function indicates a long range tail in the directions of the pion pair transverse momentum (out) and the beam (long). A proper breakup time τ_{0} ∼9 fm/c and a mean proper emission duration Δτ∼2 fm/c, leading to sizable emission time differences (⟨|Δt_{LCM} |⟩≈12 fm/c), are required to allow models to be successfully matched to these tails. The model comparisons also suggest an outside-in “burning” of the emission source reminiscent of many hydrodynamical models.
[Phys. Rev. Lett. 100, 232301] Published Fri Jun 13, 2008
- Probing θ_{23} in neutrino telescopes
Author(s): Sandhya Choubey, Viviana Niro, and Werner Rodejohann
Among all neutrino mixing parameters, the atmospheric neutrino mixing angle θ_{23} introduces the strongest variation on the flux ratios of ultrahigh-energy neutrinos. We investigate the potential of these flux ratio measurements at neutrino telescopes to constrain θ_{23} . We consider astrophysical neutrinos originating from pion, muon-damped, and neutron sources and make a comparative study of their sensitivity reach to θ_{23} . It is found that neutron sources are most favorable for testing deviations from maximal θ_{23} . Using a χ^{2} analysis, we show, in particular, the power of combining (i) different flux ratios from the same type of source, and also (ii) combining flux ratios from different astrophysical sources. We include in our analysis “impure” sources, i.e., deviations from the usually assumed initial (1∶2∶0), (0∶1∶0), or (1∶0∶0) flux compositions.
[Phys. Rev. D 77, 113006] Published Fri Jun 13, 2008
- Nucleon electromagnetic form factors in QCD
Author(s): T. M. Aliev, K. Azizi, A. Ozpineci, and M. Savci
The nucleon electromagnetic form factors are calculated in a light cone QCD sum rules framework using the most general form of the nucleon interpolating current. Using two models for the distribution amplitudes, we predict the form factors. The predictions are also compared with existing experimental data. It is shown that our results describe remarkably well the existing experimental data.
[Phys. Rev. D 77, 114014] Published Fri Jun 13, 2008
- Spin and Orbital Angular Momentum in Gauge Theories: Nucleon Spin Structure and Multipole Radiation Revisited
Author(s): Xiang-Song Chen, Xiao-Fu Lü, Wei-Min Sun, Fan Wang, and T. Goldman
We address and solve the long-standing gauge-invariance problem of the nucleon spin structure. Explicitly gauge-invariant spin and orbital angular momentum operators of quarks and gluons are obtained. This was previously thought to be an impossible task and opens a more promising avenue towards the understanding of the nucleon spin. Our research also justifies the traditional use of the canonical, gauge-dependent angular momentum operators of photons and electrons in the multipole-radiation analysis and labeling of atomic states and sheds much light on the related energy-momentum problem in gauge theories, especially in connection with the nucleon momentum.
[Phys. Rev. Lett. 100, 232002] Published Thu Jun 12, 2008
- Fine Structure of the Pygmy Dipole Resonance in ^{136} Xe
Author(s): D. Savran, M. Fritzsche, J. Hasper, K. Lindenberg, S. Müller, V. Yu. Ponomarev, K. Sonnabend, and A. Zilges
The photoresponse of the semimagic N=82 nucleus ^{136} Xe was measured up to the neutron separation energy S_{n} using the (γ,γ^{′} ) reaction. A concentration of strong dipole excitations is observed well below S_{n} showing a fragmented resonancelike structure. Microscopic calculations in the quasiparticle phonon model including complex configurations of up to three phonons agree well with the experimental data in the total integrated strength, in the shape and the fragmentation of the resonance, which allows us to draw conclusions on the damping mechanism of the pygmy dipole resonance.
[Phys. Rev. Lett. 100, 232501] Published Wed Jun 11, 2008
- Gluon multiplicity in coherent diffraction of onium on a heavy nucleus
Author(s): Yang Li and 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 the onium and the produced gluon and in the rapidity interval between the gluon and the target nucleus. We analyze our result in two limiting cases: when the onium size is much smaller than the saturation scale and when its size is much larger than the saturation scale. In the later case the gluon multiplicity is very small in the quasiclassical case and increases when the low-x evolution effects in onium become significant. We discuss the implications of our result for the Relativistic Heavy Ion Collider, Large Hadron Collider, and Electron Ion Collider phenomenology.
[Phys. Rev. D 77, 114012] Published Wed Jun 11, 2008
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