Measurements of single and double spin asymmetry in pp elastic scattering in the CNI region with a polarized atomic hydrogen gas jet target

被引：28

作者：

Alekseev, I. G. ^{[3
]}

Bravar, A. ^{[9
]}

Bunce, G. ^{[1
,9
]}

Dhawan, S. ^{[6
]}

Eyser, K. O. ^{[7
]}

Gill, R. ^{[9
]}

Haeberli, W. ^{[5
]}

Huang, H. ^{[9
]}

Jinnouchi, O. ^{[1
]}

Kponou, A. ^{[9
]}

Makdisi, Y. ^{[9
]}

Nakagawa, I. ^{[4
]}

Nass, A. ^{[9
]}

Okada, H. ^{[4
,8
]}

Saito, N. ^{[4
,8
]}

Stephenson, E. J. ^{[2
]}

Svirida, D. N. ^{[3
]}

Wise, T. ^{[5
]}

Wood, J. ^{[9
]}

Zelenski, A. ^{[9
]}

机构：

[1] RIKEN, BNL Res Ctr, Upton, NY 11973 USA

[2] Indiana Univ Cyclotron Facil, Bloomington, IN 47408 USA

[3] ITEP, Moscow 117259, Russia

[4] RIKEN, Wako, Saitama 3510198, Japan

[5] Univ Wisconsin, Madison, WI 53706 USA

[6] Yale Univ, New Haven, CT 06520 USA

[7] Univ Calif Riverside, Riverside, CA 92521 USA

[8] Kyoto Univ, Sakyo Ku, Kyoto 6068502, Japan

[9] Brookhaven Natl Lab, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW D | 2009年 / 79卷 / 09期

基金：

美国国家科学基金会;

关键词：

PROTON-PROTON SCATTERING; DELTA-SIGMA-T; TOTAL CROSS-SECTION; SMALL-ANGLE PPBAR; IMPACT-PICTURE; HADRONIC INTERFERENCE; SLOPE PARAMETER; ROOT-S=200 GEV; HIGH-ENERGIES; DEPENDENCE;

D O I：

10.1103/PhysRevD.79.094014

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Precise measurements of the single spin asymmetry AN, and the double spin asymmetry ANN, in proton-proton (pp) elastic scattering in the region of four-momentum transfer squared 0.001 < -t < 0.032 (GeV/c)(2) have been performed using a polarized atomic hydrogen gas jet target and the Relativistic Heavy Ion Collider (RHIC) polarized proton beam. We present measurements of A(N) and A(NN) at center-of-mass energies root s = 6.8 and 13.7 GeV. These spin-dependent observables are sensitive to the poorly known hadronic spin-dependent amplitudes. Comparing A(N) at different energies, a root s dependence of the hadronic single spin-flip amplitude is suggested. A hadronic double spin-flip amplitude from the A(NN) data is consistent with zero within a 2-sigma level. We also present Delta(sigma T), estimated from the measured A(NN) data. The results for Delta(sigma T) are consistent with zero. Our results provide significant constraints toward a comprehensive understanding of the reaction mechanism for pp elastic scattering.

引用

页数：18

共 31 条

[1] Measurements of single and double spin asymmetry in pp elastic scattering in the CNI region with polarized hydrogen gas jet target
Okada, H.
Alekseev, I.
Bravar, A.
Bunce, G.
Dhawan, S.
Eyser, K. O.
Gill, R.
Haeberli, W.
Huang, H.
Jinnouchi, O.
Makdishi, Y.
Nakagawa, I.
Nass, A.
Saito, N.
Stephenson, E.
Sviridia, D.
Wise, T.
Wood, J.
Zelenski, A.
PROCEEDINGS OF THE 17TH INTERNATIONAL SPIN PHYSICS SYMPOSIUM, 2007, 915 : 681 - +
[2] Measurement of the analyzing power AN in pp elastic scattering in the CNI region with a polarized atomic hydrogen gas jet target
Okada, H.
Alekseev, I. G.
Bravar, A.
Bunce, G.
Dhawan, S.
Gill, R.
Haeberli, W.
Jinnouchi, O.
Khodinov, A.
Makdisi, Y.
Nass, A.
Saito, N.
Stephenson, E. J.
Svirida, D. N.
Wise, T.
Zelenski, A.
PHYSICS LETTERS B, 2006, 638 (5-6) : 450 - 454
[3] Spin dependence in polarized elastic scattering in the CNI region
Bravar, Alessandro
DEEP INELASTIC SCATTERING, 2007, : 687 - 690
[4] AN measurement in the CNI region, at √s=200GeV in polarized pp elastic scattering
Guryn, W
Deep Inelastic Scattering, 2005, 792 : 523 - 526
[5] Measurements of the energy dependence of the analyzing power in pp elastic scattering in the CNI region
Bazilevsky, A.
Alekseev, I.
Aschenauer, E.
Atoyan, G.
Bravar, A.
Bunce, G.
Boyle, K.
Gill, R.
Huang, H.
Lee, S.
Makdisi, Y.
Morozov, B.
Nakagawa, I.
Okada, H.
Svirida, D.
Zelenski, A.
19TH INTERNATIONAL SPIN PHYSICS SYMPOSIUM (SPIN2010), PT 2, 2011, 295
[6] Breakup corrections to spin asymmetries in the 3He beam polarization measurements with the Polarized Atomic Hydrogen Gas Jet Target
Poblaguev, A. A.
PHYSICAL REVIEW C, 2023, 108 (02)
[7] Transverse spin asymmetries in the CNI region in polarized proton-proton elastic scattering at STAR
Guryn, Wlodek
DIFFRACTION 2012, 2013, 1523 : 194 - 198
[8] Results on transverse spin asymmetries in the polarized proton-proton elastic scattering in the CNI region at STAR
Svirida, D.
DIFFRACTION 2010: INTERNATIONAL WORKSHOP ON DIFFRACTION IN HIGH ENERGY PHYSICS, 2011, 1350
[9] Constraints on ΔG through Longitudinal Double Spin Asymmetry Measurements of Inclusive Jet Production in Polarized pp Collisions at 200 GeV
Sarsour, M.
SPIN PHYSICS, 2009, 1149 : 389 - 392
[10] Precision Small Scattering Angle Measurements of Elastic Proton-Proton Single and Double Spin Analyzing Powers at the RHIC Hydrogen Jet Polarimeter
Poblaguev, A. A.
Zelenski, A.
Aschenauer, E.
Atoian, G.
Eyser, K. O.
Huang, H.
Makdisi, Y.
Schmidke, W. B.
Alekseev, I
Svirida, D.
Buttimore, N. H.
PHYSICAL REVIEW LETTERS, 2019, 123 (16)

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