We present a measurement of pi(+)pi(-)pi(+)pi(-) photonuclear production in ultraperipheral Au-Au collisions at root s(NN) = 200 GeV from the STAR experiment. The pi(+)pi(-)pi(+)pi(-) final states are observed at low transverse momentum and are accompanied by mutual nuclear excitation of the beam particles. The strong enhancement of the production cross section at low transverse momentum is consistent with coherent photoproduction. The pi(+)pi(-)pi(+)pi(-) invariant mass spectrum of the coherent events exhibits a broad peak around 1540 +/- 40 MeV/c(2) with a width of 570 +/- 60 MeV/c(2), in agreement with the photoproduction data ...
We report inclusive photon measurements about midrapidity (\y\\u3c0.5) from Au-197+Au-197 collisions...
The results of midrapidity (0<y<0.8) neutral pion spectra over an extended transverse momentum range...
We present the transverse momentum (pT) spectra for identified charged pions, protons and anti-proto...
We report a measurement of high-p(T) inclusive pi(0), eta, and direct photon product...
We present the first measurements of identified hadron production, azimuthal anisotr...
We report new results on identified (anti) proton and charged pion spectra at large ...
We present STAR measurements of the azimuthal anisotropy parameter v(2) for pions, k...
Photoproduction reactions occur when the electromagnetic field of a relativistic hea...
Measurements of the production of forward π^0 mesons from p + p and d + Au collisions at √s_(NN) = 2...
The short-lived K(892)* resonance provides an efficient tool to probe properties of the hot and dens...
We report on p-Lambda, p-(Lambda) over bar, (p) over bar-Lambda, and (p) over bar-(L...
Yields, correlation shapes, and mean transverse momenta p(T) of charged particles as...
We report a measurement of high-pT inclusive π0, η, and direct photon production in p+p and d+Au col...
Measurements of the production of forward π0 mesons from p+p and d+Au collisions at √sNN=200 GeV ar...
We report on p-Lambda, p-(Lambda) over bar, (p) over bar-Lambda, and (p) over bar-(L...
We report inclusive photon measurements about midrapidity (\y\\u3c0.5) from Au-197+Au-197 collisions...
The results of midrapidity (0<y<0.8) neutral pion spectra over an extended transverse momentum range...
We present the transverse momentum (pT) spectra for identified charged pions, protons and anti-proto...
We report a measurement of high-p(T) inclusive pi(0), eta, and direct photon product...
We present the first measurements of identified hadron production, azimuthal anisotr...
We report new results on identified (anti) proton and charged pion spectra at large ...
We present STAR measurements of the azimuthal anisotropy parameter v(2) for pions, k...
Photoproduction reactions occur when the electromagnetic field of a relativistic hea...
Measurements of the production of forward π^0 mesons from p + p and d + Au collisions at √s_(NN) = 2...
The short-lived K(892)* resonance provides an efficient tool to probe properties of the hot and dens...
We report on p-Lambda, p-(Lambda) over bar, (p) over bar-Lambda, and (p) over bar-(L...
Yields, correlation shapes, and mean transverse momenta p(T) of charged particles as...
We report a measurement of high-pT inclusive π0, η, and direct photon production in p+p and d+Au col...
Measurements of the production of forward π0 mesons from p+p and d+Au collisions at √sNN=200 GeV ar...
We report on p-Lambda, p-(Lambda) over bar, (p) over bar-Lambda, and (p) over bar-(L...
We report inclusive photon measurements about midrapidity (\y\\u3c0.5) from Au-197+Au-197 collisions...
The results of midrapidity (0<y<0.8) neutral pion spectra over an extended transverse momentum range...
We present the transverse momentum (pT) spectra for identified charged pions, protons and anti-proto...