Longitudinal double-spin asymmetry for inclusive jet and dijet production in $pp$ collisions at $\sqrt{s}=510$ GeV

Abstract

We report the first measurement of the inclusive jet and the dijet longitudinal double-spin asymmetries, $A_{LL}$, at midrapidity in polarized $pp$ collisions at a center-of-mass energy $\sqrt{s}=510$ GeV. The inclusive jet $A_{LL}$ measurement is sensitive to the gluon helicity distribution down to a gluon momentum fraction of $x\approx 0.015$, 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 $\sqrt{s}=200$ GeV in the overlapping kinematic region, $x>0.05$, and show good agreement with predictions from recent next-to-leading order global analyses.

References in corpus (37)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• The anti-k_t jet clustering algorithm
• FastJet user manual
• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• New parton distribution functions from a global analysis of quantum chromodynamics
• Tuning Monte Carlo Generators: The Perugia Tunes
• The STAR Time Projection Chamber: A Unique Tool for Studying High Multiplicity Events at RHIC
• A first unbiased global determination of polarized PDFs and their uncertainties
• Evidence for polarization of gluons in the proton
• Identified hadron spectra at large transverse momentum in p+p and d+Au collisions at \sqrts_NN = 200 GeV
• A QCD Analysis of the Mass Structure of the Nucleon
• Jet photoproduction at HERA
• The RHIC Zero Degree Calorimeter
• Inclusive cross section and double helicity asymmetry for π^0 production in p+p collisions at sqrt(s)=200 GeV: Implications for the polarized gluon distribution in the proton
• Proton Mass Decomposition from the QCD Energy Momentum Tensor
• Longitudinal double-spin asymmetry and cross section for inclusive jet production in polarized proton collisions at sqrt(s) = 200 GeV
• Iterative Monte Carlo analysis of spin-dependent parton distributions
• Precision Measurement of the Longitudinal Double-spin Asymmetry for Inclusive Jet Production in Polarized Proton Collisions at $\sqrt{s}=200$ GeV
• Inclusive cross section and double helicity asymmetry for pi^0 production in p+p collisions at sqrt(s) = 62.4 GeV
• Identified hadron compositions in p+p and Au+Au collisions at high transverse momenta at $\sqrt{s_{{}_{NN}}}=200$ GeV
• The gluon spin contribution to the proton spin from the double helicity asymmetry in inclusive pi^0 production in polarized p+p collisions at sqrt(s)=200 GeV
• Inclusive double-helicity asymmetries in neutral pion and eta meson production in $\vec{p}+\vec{p}$ collisions at $\sqrt{s}=200$ GeV
• Glue spin and helicity in proton from lattice QCD
• Measurements of transverse energy distributions in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV
• Jet production in (un)polarized pp collisions: dependence on jet algorithm
• Small-$x$ Asymptotics of the Gluon Helicity Distribution
• The STAR Vertex Position Detector
• Inclusive cross section and double-helicity asymmetry for ${\pi }^0$ production at midrapidity in $p$$+$$p$ collisions at $\sqrt{s}=510$ GeV
• New developments in the statistical approach of parton distributions: tests and predictions up to LHC energies
• Charged jet cross sections and properties in proton-proton collisions at $\sqrt{s}=7$ TeV
• Neutral pion cross section and spin asymmetries at intermediate pseudorapidity in polarized proton collisions at sqrt{s} = 200 GeV
• Measurement of the cross section and longitudinal double-spin asymmetry for di-jet production in polarized $pp$ collisions at $\sqrt{s}$ = 200 GeV
• A Study of the Energy Dependence of the Underlying Event in Proton-Antiproton Collisions
• Longitudinal Double-Spin Asymmetries for Dijet Production at Intermediate Pseudorapidity in Polarized $pp$ Collisions at $\sqrt{s}$ = 200 GeV
• Next-to-leading order QCD corrections to hadron+jet production in pp collisions at RHIC
• Longitudinal Double-Spin Asymmetries for ${\pi }^0$s in the Forward Direction for 510 GeV Polarized $pp$ Collisions

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• Differential measurements of jet substructure and partonic energy loss in Au$+$Au collisions at $\sqrt{s_{\mathrm{NN}}}=200$ GeV
• Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab
• Underlying event measurements in $p$+$p$ collisions at $\sqrt{s}=200$ GeV at RHIC
• Azimuthal transverse single-spin asymmetries of inclusive jets and identified hadrons within jets from polarized $pp$ collisions at $\sqrt{s}$ = 200 GeV
• Measurement of charged pion double spin asymmetries at midrapidity in longitudinally polarized $p$$+$$p$ collisions at $\sqrt{s}=510$ GeV
• Revisiting quark and gluon polarization in the proton at the EIC
• Future tests of parton distributions
• Invariant Jet Mass Measurements in $pp$ Collisions at $\sqrt{s}=200$ GeV at RHIC
• Proton spin after 30 years: what we know and what we don't?
• Longitudinal and transverse spin transfer to $\Lambda$ and $\overline{\Lambda }$ hyperons in polarized $p$+$p$ collisions at $\sqrt{s}=200$ GeV
• Accessing gluon polarization with high-$P_T$ hadrons in SIDIS
• Strange quark helicity in the proton from chiral effective theory
• Investigating the broadening phenomenon in two-particle correlations induced by gluon saturation
• Energy Independence of the Collins Asymmetry in $p^{\uparrow }p$ Collisions
• Precision measurement of the longitudinal double-spin asymmetry for dijet production at intermediate pseudorapidity in polarized $pp$ collisions at $\sqrt{s}$ = 200 GeV
• Measurement of medium-induced acoplanarity in central Au-Au and pp collisions at $\sqrt{s_{\mathrm{NN}}}=200$ GeV using direct-photon+jet and ${\pi }^0$+jet correlations
• Measurement of inclusive jet cross section and substructure in $p$$+$$p$ collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Helicity-dependent distribution of strange quarks in the proton from nonlocal chiral effective theory
• Recent results on cold-QCD from RHIC
• Exploring the Quark Transversity and the Collins Fragmentation Functions using Polarized $pp$ Collisions at STAR
• Transverse Spin Transfer of $\Lambda$ and $\overline{\Lambda }$ Hyperons in Polarized $p$+$p$ Collisions at $\sqrt{s}=200$ GeV at RHIC-STAR