Longitudinal Double Spin Asymmetry in Inclusive Jet Production at STAR
Katarzyna Kowalik
Abstract
This contribution reports on the first measurement of the longitudinal double-spin asymmetry ALL for the inclusive production of jets in polarized proton-proton collisions at s=200 GeV. The data were collected with STAR at RHIC in the years 2003 and 2004, and correspond to a sampled integrated luminosity of 0.3 pb-1 with beam polarizations up to 45%. The results on ALL cover jet transverse momenta 5 < pT < 17 GeV/c and agree with perturbative QCD evaluations based on deep-inelastic scattering parametrizations for the gluon polarization in the proton. The results disfavor large positive gluon polarization in the polarized proton.
Create a lesson
Related papers
Improved Threshold for Particle-Induced Magnetic Avalanche in Single-Molecule Magnets Using Fe8 Molecule
Bailey Kohn, Rupak Mahapatra, Ivan Borzenets et al.
Proposing GRENDEL: GalleRy ExperimeNt for Decays of Exotic LLPs at the LHC
Matthew Citron, Federico Redi, Ryan Schmitz
First measurement of the ratio of ψ(2S)-to-J/ψ inclusive production in pAr and pp collisions at sNN =113\,GeV with SMOG2
LHCb collaboration, R. Aaij, M. Abdelfatah et al.
Search for proton decay into a single charged antilepton and a massless invisible particle using the full pure water data set of Super-Kamiokande
Kamiokande Collaboration, Y. M. Liu, K. Terada et al.
ConCA: Concentration-Aware Channel Attention for Fine-Grained Visual Recognition
Yu-Sheng Liu, Yu-Chen Tung
Searching for Extra Dimensions and Copies of the Standard Model with IceCube
R. Abbasi, M. Ackermann, J. Adams et al.