Longitudinal double-spin asymmetry for inclusive jet and dijet production in pp collisions at s =510 GeV

STAR Collaboration

doi:10.1103/PhysRevD.100.052005

Longitudinal double-spin asymmetry for inclusive jet and dijet production in pp collisions at s =510 GeV

STAR Collaboration

Brookhaven National Laboratory
AGH University of Krakow
Ohio State University
University of Kentucky
Kent State University
Joint Institute for Nuclear Research
Panjab University
Variable Energy Cyclotron Centre
Alikhanov Institute for Theoretical and Experimental Physics
Moscow Engineering Physics Institute
Texas A&M University
University of Tsukuba
Tsinghua University
National Institute of Science Education and Research
University of California at Riverside
Stony Brook University
University of Houston
University of Jammu
Czech Technical University in Prague
Czech Academy of Sciences
Shandong University
Rice University
Yale University
University of California at Davis
University of California at Los Angeles
National Cheng Kung University
Fudan University
University of Science and Technology of China
Creighton University
University of California at Berkeley
Eötvös Loránd University
Central China Normal University
Heidelberg University
Institute for High Energy Physics
Pennsylvania State University
Lawrence Berkeley National Laboratory
Abilene Christian University
Purdue University
Wayne State University
University of Illinois at Chicago
Lehigh University
Southern Connecticut State University
Technische Universität Darmstadt
Valparaiso University
Indian Institute of Science Education and Research, Tirupati
American University in Cairo
Indiana University Bloomington
Warsaw University of Technology
Goethe University Frankfurt
Argonne National Laboratory
Chinese Academy of Sciences
University of Texas at Austin
Rutgers - The State University of New Jersey, New Brunswick
Institute of Physics Bhubaneswar
Indian Institute of Science Education and Research, Berhampur
Pusan National University
Temple University
Max Planck Institute for Physics (Werner Heisenberg Institute)
Indian Institute of Technology Patna
Universidade de São Paulo
Huzhou University
Michigan State University
United States Naval Academy

Research output: Contribution to journal › Article › peer-review

64 Scopus citations

Abstract

We report the first measurement of the inclusive jet and the dijet longitudinal double-spin asymmetries, ALL, at midrapidity in polarized pp collisions at a center-of-mass energy s=510 GeV. The inclusive jet ALL measurement is sensitive to the gluon helicity distribution down to a gluon momentum fraction of x≈0.015, while the dijet measurements, separated into four jet-pair topologies, provide constraints on the x dependence of the gluon polarization. Both results are consistent with previous measurements made at s=200 GeV in the overlapping kinematic region, x>0.05, and show good agreement with predictions from recent next-to-leading order global analyses.

Original language	English
Article number	052005
Journal	Physical Review D
Volume	100
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.100.052005
State	Published - 9 Sep 2019
Externally published	Yes

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10.1103/PhysRevD.100.052005

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title = "Longitudinal double-spin asymmetry for inclusive jet and dijet production in pp collisions at s =510 GeV",

abstract = "We report the first measurement of the inclusive jet and the dijet longitudinal double-spin asymmetries, ALL, at midrapidity in polarized pp collisions at a center-of-mass energy s=510 GeV. The inclusive jet ALL measurement is sensitive to the gluon helicity distribution down to a gluon momentum fraction of x≈0.015, while the dijet measurements, separated into four jet-pair topologies, provide constraints on the x dependence of the gluon polarization. Both results are consistent with previous measurements made at s=200 GeV in the overlapping kinematic region, x>0.05, and show good agreement with predictions from recent next-to-leading order global analyses.",

author = "J. Adam and L. Adamczyk and Adams, \{J. R.\} and Adkins, \{J. K.\} and S. Kabana and \{STAR Collaboration\}",

note = "Publisher Copyright: {\textcopyright} 2019 authors. Published by the American Physical Society.",

year = "2019",

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doi = "10.1103/PhysRevD.100.052005",

language = "English",

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T1 - Longitudinal double-spin asymmetry for inclusive jet and dijet production in pp collisions at s =510 GeV

AU - Adam, J.

AU - Adamczyk, L.

AU - Adams, J. R.

AU - Adkins, J. K.

AU - Kabana, S.

AU - STAR Collaboration

PY - 2019/9/9

Y1 - 2019/9/9

N2 - We report the first measurement of the inclusive jet and the dijet longitudinal double-spin asymmetries, ALL, at midrapidity in polarized pp collisions at a center-of-mass energy s=510 GeV. The inclusive jet ALL measurement is sensitive to the gluon helicity distribution down to a gluon momentum fraction of x≈0.015, while the dijet measurements, separated into four jet-pair topologies, provide constraints on the x dependence of the gluon polarization. Both results are consistent with previous measurements made at s=200 GeV in the overlapping kinematic region, x>0.05, and show good agreement with predictions from recent next-to-leading order global analyses.

AB - We report the first measurement of the inclusive jet and the dijet longitudinal double-spin asymmetries, ALL, at midrapidity in polarized pp collisions at a center-of-mass energy s=510 GeV. The inclusive jet ALL measurement is sensitive to the gluon helicity distribution down to a gluon momentum fraction of x≈0.015, while the dijet measurements, separated into four jet-pair topologies, provide constraints on the x dependence of the gluon polarization. Both results are consistent with previous measurements made at s=200 GeV in the overlapping kinematic region, x>0.05, and show good agreement with predictions from recent next-to-leading order global analyses.

UR - https://www.scopus.com/pages/publications/85072981732

U2 - 10.1103/PhysRevD.100.052005

DO - 10.1103/PhysRevD.100.052005

M3 - Article

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SN - 2470-0010

VL - 100

JO - Physical Review D

JF - Physical Review D

IS - 5

M1 - 052005

ER -

Longitudinal double-spin asymmetry for inclusive jet and dijet production in pp collisions at s =510 GeV

Abstract

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