Longitudinal double-spin asymmetries of inclusive jet and dijet production at STAR
Abstract
The STAR experiment probes the gluon helicity distribution \Delta g(x, Q^2) using collisions of longitudinally polarized protons at \sqrt{s} = 200 ~GeV and \sqrt{s} = 510 ~GeV. \Delta g(x, Q^2) can be accessed through the double-spin asymmetries A_{LL} in gluon-dominated hard scattering processes via inclusive jet and dijet production. This proceedings report on recent measurements of A_{LL} for inclusive jets and dijets in the mid-pseudorapidity ( |\eta| < 1 ) and dijets in the intermediate pseudrapidity ( -0.8 < \eta < 1.8 ) regions. These measurements provide sensitivity to \Delta g(x, Q^2) for gluon momentum fractions x from \simeq 0.5 down to \simeq 0.004 . The results are in good agreement with previous STAR measurements and recent theoretical evaluations of prior world data.
- Authors:
-
- Argonne National Laboratory
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1875932
- Resource Type:
- Published Article
- Journal Name:
- SciPost Physics Proceedings
- Additional Journal Information:
- Journal Name: SciPost Physics Proceedings Journal Issue: 8; Journal ID: ISSN 2666-4003
- Publisher:
- Stichting SciPost
- Country of Publication:
- Netherlands
- Language:
- English
Citation Formats
Zurek, Maria. Longitudinal double-spin asymmetries of inclusive jet and dijet production at STAR. Netherlands: N. p., 2022.
Web. doi:10.21468/SciPostPhysProc.8.086.
Zurek, Maria. Longitudinal double-spin asymmetries of inclusive jet and dijet production at STAR. Netherlands. https://doi.org/10.21468/SciPostPhysProc.8.086
Zurek, Maria. Tue .
"Longitudinal double-spin asymmetries of inclusive jet and dijet production at STAR". Netherlands. https://doi.org/10.21468/SciPostPhysProc.8.086.
@article{osti_1875932,
title = {Longitudinal double-spin asymmetries of inclusive jet and dijet production at STAR},
author = {Zurek, Maria},
abstractNote = {The STAR experiment probes the gluon helicity distribution \Delta g(x, Q^2) Δ g ( x , Q 2 ) using collisions of longitudinally polarized protons at \sqrt{s} = 200 s = 200 ~GeV and \sqrt{s} = 510 s = 510 ~GeV. \Delta g(x, Q^2) Δ g ( x , Q 2 ) can be accessed through the double-spin asymmetries A_{LL} A L L in gluon-dominated hard scattering processes via inclusive jet and dijet production. This proceedings report on recent measurements of A_{LL} A L L for inclusive jets and dijets in the mid-pseudorapidity ( |\eta| < 1 | η | < 1 ) and dijets in the intermediate pseudrapidity ( -0.8 < \eta < 1.8 − 0.8 < η < 1.8 ) regions. These measurements provide sensitivity to \Delta g(x, Q^2) Δ g ( x , Q 2 ) for gluon momentum fractions x x from \simeq 0.5 ≃ 0.5 down to \simeq 0.004 ≃ 0.004 . The results are in good agreement with previous STAR measurements and recent theoretical evaluations of prior world data.},
doi = {10.21468/SciPostPhysProc.8.086},
journal = {SciPost Physics Proceedings},
number = 8,
volume = ,
place = {Netherlands},
year = {Tue Jul 12 00:00:00 EDT 2022},
month = {Tue Jul 12 00:00:00 EDT 2022}
}
https://doi.org/10.21468/SciPostPhysProc.8.086
Works referenced in this record:
Evidence for Polarization of Gluons in the Proton
journal, July 2014
- de Florian, Daniel; Sassot, Rodolfo; Stratmann, Marco
- Physical Review Letters, Vol. 113, Issue 1
The RHIC zero degree calorimeters
journal, September 2001
- Adler, C.; Denisov, A.; Garcia, E.
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 470, Issue 3
Precision Measurement of the Longitudinal Double-Spin Asymmetry for Inclusive Jet Production in Polarized Proton Collisions at
journal, August 2015
- Adamczyk, L.; Adkins, J. K.; Agakishiev, G.
- Physical Review Letters, Vol. 115, Issue 9
Monte Carlo sampling variant of the DSSV14 set of helicity parton densities
journal, December 2019
- de Florian, Daniel; Lucero, Gonzalo Agustín; Sassot, Rodolfo
- Physical Review D, Vol. 100, Issue 11
Longitudinal double-spin asymmetries for dijet production at intermediate pseudorapidity in polarized collisions at
journal, August 2018
- Adam, J.; Adamczyk, L.; Adams, J. R.
- Physical Review D, Vol. 98, Issue 3
The STAR time projection chamber: a unique tool for studying high multiplicity events at RHIC
journal, March 2003
- Anderson, M.; Berkovitz, J.; Betts, W.
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 499, Issue 2-3
The STAR endcap electromagnetic calorimeter
journal, March 2003
- Allgower, C. E.; Anderson, B. D.; Baldwin, A. R.
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 499, Issue 2-3
The STAR Barrel Electromagnetic Calorimeter
journal, March 2003
- Beddo, M.; Bielick, E.; Fornek, T.
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 499, Issue 2-3
Longitudinal double-spin asymmetry for inclusive jet and dijet production in polarized proton collisions at
journal, May 2021
- Abdallah, M. S.; Adam, J.; Adamczyk, L.
- Physical Review D, Vol. 103, Issue 9
A first unbiased global determination of polarized PDFs and their uncertainties
journal, October 2014
- Nocera, Emanuele R.; Ball, Richard D.; Forte, Stefano
- Nuclear Physics B, Vol. 887
Measurement of the cross section and longitudinal double-spin asymmetry for dijet production in polarized collisions at
journal, April 2017
- Adamczyk, L.; Adkins, J. K.; Agakishiev, G.
- Physical Review D, Vol. 95, Issue 7
Charged jet cross sections and properties in proton-proton collisions at
journal, June 2015
- Abelev, B.; Adam, J.; Adamová, D.
- Physical Review D, Vol. 91, Issue 11
The STAR Vertex Position Detector
journal, September 2014
- Llope, W. J.; Zhou, J.; Nussbaum, T.
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 759
Longitudinal double-spin asymmetry for inclusive jet and dijet production in collisions at
journal, September 2019
- Adam, J.; Adamczyk, L.; Adams, J. R.
- Physical Review D, Vol. 100, Issue 5