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doi:10.1103/physrevlett.101.222001

Cited by 154 publications

(67 citation statements)

References 53 publications

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“…In Sec. III, we show the P T -dependence of A N for 0 in the wider P T range and clarify the origin of its characteristic behavior consistent with the RHIC data [8]. In Sec.…”

Section: Introductionsupporting

confidence: 76%

“…X at the center-of-mass energy ffiffiffi S p ¼ 20 GeV, which is as large as 30% in the forward direction of the polarized proton or antiproton [2][3][4][5]. RHIC at Brookhaven National Laboratory also reported a similar magnitude of A N at ffiffiffi S p ¼ 62:4, 200 GeV [6][7][8][9][10][11]. In our recent paper [12] (hereafter referred to as KK10), we have presented a numerical analysis of the RHIC A N data for p " p !…”

Section: Introductionmentioning

confidence: 85%

See 1 more Smart Citation

A phenomenological study of single transverse-spin asymmetry for inclusive light-hadron productions at RHIC

Kanazawa

Koike²

2011

Phys. Rev. D

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We study the single transverse-spin asymmetry for inclusive light-hadron productions in the protonproton collision, p " p ! hX (h ¼ , K, ), for the RHIC kinematics based on the twist-3 mechanism in the collinear factorization. The analysis includes all the contributions from the soft-gluon pole and the soft-fermion pole for the twist-3 quark-gluon correlation functions in the transversely polarized proton. After discussing the flavor decomposition and the P T -dependence of the asymmetry obtained in the previous analysis at the center-of-mass energy ffiffiffi S p ¼ 62:4 and 200 GeV, we will give a prediction for the asymmetry at ffiffiffi S p ¼ 500 GeV and also for the -meson production. We found slightly smaller asymmetry at ffiffiffi S p ¼ 500 GeV for AE;0 and K þ compared with those at the lower energies. The asymmetry for the -meson turned out to be significantly larger than that for 0 .

show abstract

“…In Sec. III, we show the P T -dependence of A N for 0 in the wider P T range and clarify the origin of its characteristic behavior consistent with the RHIC data [8]. In Sec.…”

Section: Introductionsupporting

confidence: 76%

Section: Introductionmentioning

confidence: 85%

A phenomenological study of single transverse-spin asymmetry for inclusive light-hadron productions at RHIC

Kanazawa

Koike²

2011

Phys. Rev. D

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show abstract

“…More recently, the PHENIX, STAR, and BRAHMS collaborations at the Relativistic Heavy Ion Collider (RHIC) have studied transverse spin asymmetries over a wide kinematic range at √ s = 200 GeV [8][9][10][11]. The data they have presented [8][9][10] confirmed and extended the Fermilab results, and also indicated a non-monotonic dependence of STSA on the transverse momentum k T of the produced hadron [12,13], shown in the right panel of Fig. 2.…”

Section: Introductionsupporting

confidence: 58%

“…2. Experimental data on the pion single transverse spin asymmetry AN as a function of Feynman-x reported by E581 and E704 collaborations (graphically reconstructed from [3], shown in the left panel) for 0.7 ≤ kT ≤ 2.0 GeV/c, and as a function of the pion transverse momentum kT collected by the STAR collaboration [12] (right panel).…”

Section: Introductionmentioning

confidence: 99%

A New Mechanism for Generating a Single Transverse Spin Asymmetry

Sievert

2013

Nuclear Physics A

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We propose a new mechanism for generating a single transverse spin asymmetry (STSA) in polarized proton-proton and proton-nucleus collisions in the high-energy scattering approximation. In this framework the STSA originates from the q → q G splitting in the projectile (proton) light-cone wave function followed by a perturbative (C-odd) odderon interaction, together with a C-even interaction, between the projectile and the target. We show that some aspects of the obtained expression for the STSA of the produced quarks are in qualitative agreement with experiment: STSA decreases with decreasing projectile xF and is a non-monotonic function of the transverse momentum kT . In our framework the STSA peaks at kT near the saturation scale Qs. Our mechanism predicts that the quark STSA in proton-nucleus collisions should be much smaller than in proton-proton collisions. We also observe that in our formalism the STSA for prompt photons is zero.

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“…These results surprised the quantum-chromodynamics (QCD) community because they disagreed with the expectation from the naive perturbative QCD of very small spin asymmetries [2]. The large TSSA of pion production has been subsequently observed in hadronic collisions over a range of energies extending up to √ s = 500 GeV for π 0 ( √ s = 200 GeV for π ± ) [3][4][5][6][7][8][9][10][11][12]. Furthermore, TSSA in η meson production has also been studied at forward rapidity [13,14].…”

Section: Introductionmentioning

confidence: 93%

Cross section and transverse single-spin asymmetry of muons from open heavy-flavor decays in polarized p+p collisions at s=200 GeV

Aidala¹,

Ajitanand²,

Akiba³

et al. 2017

Phys. Rev. D

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The cross section and transverse single-spin asymmetries of µ − and µ + from open heavy-flavor decays in polarized p+p collisions at √ s = 200 GeV were measured by the PHENIX experiment during 2012 at the Relativistic Heavy Ion Collider. Because heavy-flavor production is dominated by gluon-gluon interactions at √ s = 200 GeV, these measurements offer a unique opportunity to obtain information on the trigluon correlation functions. The measurements are performed at forward and backward rapidity (1.4 < |y| < 2.0) over the transverse momentum range of 1.25 < pT < 7 GeV/c for the cross section and 1.25 < pT < 5 GeV/c for the asymmetry measurements. The obtained cross section is compared to a fixed-order-plus-next-to-leading-log perturbative-quantumchromodynamics calculation. The asymmetry results are consistent with zero within uncertainties, and a model calculation based on twist-3 three-gluon correlations agrees with the data. * PHENIX Spokesperson: akiba@rcf.rhic.bnl.gov † Deceased 4

show abstract

Forward Neutral-Pion Transverse Single-Spin Asymmetries inp+pCollisions ats=200 GeV

Cited by 154 publications

References 53 publications

A phenomenological study of single transverse-spin asymmetry for inclusive light-hadron productions at RHIC

A phenomenological study of single transverse-spin asymmetry for inclusive light-hadron productions at RHIC

A New Mechanism for Generating a Single Transverse Spin Asymmetry

Cross section and transverse single-spin asymmetry of muons from open heavy-flavor decays in polarized p+p collisions at s=200 GeV

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