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Showing 2008 · nucl-exShow all

18 papers · 2 filters

nucl-ex2008★ 52 cited

Observation of Two-source Interference in the Photoproduction Reaction

B. I. Abelev

In ultra-peripheral relativistic heavy-ion collisions, a photon from the electromagnetic field of one nucleus can fluctuate to a quark-antiquark pair and scatter from the other nuc…

nucl-ex2008★ 103 cited

A Precise Measurement of the Neutron Magnetic Form Factor GMn in the Few-GeV2 Region

J. Lachniet, A. Afanasev, H. Arenhövel +5

The neutron elastic magnetic form factor GMn has been extracted from quasielastic electron scattering data on deuterium with the CEBAF Large Acceptance Spectrometer (CLAS) at Jeffe…

nucl-ex2008★ 96 cited

Energy and system size dependence of ϕmeson production in Cu+Cu and Au+Au collisions

STAR Collaboration

We study the beam-energy and system-size dependence of ϕmeson production (using the hadronic decay mode ϕ-- K+K-) by comparing the new results from Cu+Cu collisions and previously…

nucl-ex2008★ 38 cited

Electroproduction of p π^{+} π^{-} off protons at 0.2<Q^{2}<0.6 GeV^{2} and 1.3<W<1.57 GeV with CLAS

G. V. Fedotov, V. I. Mokeev, V. D. Burkert +5

This paper reports on the most comprehensive data set obtained on differential and fully integrated cross sections for the process . The data were collec…

nucl-ex2008★ 144 cited

Measurements of meson production in relativistic heavy-ion collisions at RHIC

The STAR Collaboration, B. I. Abelev

We present results for the measurement of meson production via its charged kaon decay channel in Au+Au collisions at , 130, and 200 GeV, an…

nucl-ex2008★ 978 cited

Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR

STAR Collaboration, B. I. Abelev

Identified charged particle spectra of , , and $\pbar$ at mid-rapidity () measured by the $\dedx$ method in the STAR-TPC are reported for and d+…

nucl-ex2008★ 55 cited

Beam-Energy and System-Size Dependence of Dynamical Net Charge Fluctuations

B. I. Abelev, M. M. Aggarwal, Z. Ahammed +360

We present measurements of net charge fluctuations in collisions at 19.6, 62.4, 130, and 200 GeV, collisions at 62.4, 200…

nucl-ex2008★ 121 cited

System-size independence of directed flow at the Relativistic Heavy-Ion Collider

STAR Collaboration, B. I. Abelev

We measure directed flow () for charged particles in Au+Au and Cu+Cu collisions at 200 GeV and 62.4 GeV, as a function of pseudorapidity (), transverse mo…

nucl-ex2008★ 102 cited

Indications of Conical Emission of Charged Hadrons at the BNL Relativistic Heavy Ion Collider

STAR Collaboration, B. I. Abelev

Three-particle azimuthal correlation measurements with a high transverse momentum trigger particle are reported for pp, d+Au, and Au+Au collisions at 200 GeV by the STAR experiment…

nucl-ex2008★ 76 cited

Electroexcitation of the Roper resonance for 1.7 < Q2 < 4.5 GeV2 in ep -> enpi+

I. G. Aznauryan, V. D. Burkert, W. Kim +2

The helicity amplitudes of the electroexcitation of the Roper resonance are extracted for 1.7 < Q2 < 4.5 GeV2 from recent high precision JLab-CLAS cross section and longitudinally…

nucl-ex2008★ 23 cited

First measurement of target and double spin asymmetries for polarized e- polarized p --> e p pi0 in the nucleon resonance region above the Delta(1232)

CLAS Collaboration, A. S. Biselli

The exclusive channel polarized proton(polarized e,e prime p)pi0 was studied in the first and second nucleon resonance regions in the Q2 range from 0.187 to 0.770 GeV2 at Jefferson…

nucl-ex2008★ 70 cited

Light Vector Mesons in the Nuclear Medium

M. H. Wood, R. Nasseripour, D. P. Weygand +5

The light vector mesons (, , and ) were produced in deuterium, carbon, titanium, and iron targets in a search for possible in-medium modifications to the properties of the…

nucl-ex2008★ 35 cited

Electroproduction of mesons at GeV measured with the CLAS spectrometer

J. P. Santoro, E. S. Smith, M. Garcon +3

Electroproduction of exclusive vector mesons has been studied with the CLAS detector in the kinematical range GeV, GeV$…

nucl-ex2008★ 54 cited

Moments of the Spin Structure Functions g_1^p and g_1^d for 0.05 < Q^2 < 3.0 GeV^2

Y. Prok, P. Bosted, V. D. Burkert +7

The spin structure functions g_1 for the proton and the deuteron have been measured over a wide kinematic range in x and Q2 using 1.6 and 5.7 GeV longitudinally polarized electrons…

nucl-ex2008★ 40 cited

Polarized Structure Function for in the Nucleon Resonance Region

Rakhsha Nasseripour, Brian Raue, Daniel Carman +2

The first measurements of the polarized structure function for the reaction in the nucleon resonance region are reported. Measurements are included fro…

nucl-ex2008★ 267 cited

Centrality dependence of charged hadron and strange hadron elliptic flow from sqrt(s_NN) = 200 GeV Au+Au collisions

STAR Collaboration, B. I. Abelev

We present STAR results on the elliptic flow v_2 of charged hadrons, strange and multi-strange particles from sqrt(s_NN) = 200 GeV Au+Au collisions at RHIC. The detailed study of t…

nucl-ex2008★ 63 cited

Spin alignment measurements of the and vector mesons at RHIC

B. I. Abelev

We present the first spin alignment measurements for the and vector mesons produced at mid-rapidity with transverse momenta up to 5 GeV/c at …

nucl-ex2008★ 77 cited

Hadronic resonance production in +Au collisions at = 200 GeV at RHIC

B. I. Abelev

We present the first measurements of the , (892), (1232), (1385), and (1520) resonances in +Au collisions at = 200 GeV, reconst…