Transverse spin asymmetries in the CNI region in polarized proton-proton elastic scattering at STAR

2013 ◽  
Author(s):  
Włodek Guryn ◽  
STAR Collaboration
Keyword(s):  
Elastic Scattering ◽  
Transverse Spin ◽  
Proton Proton ◽  
Spin Asymmetries ◽  
Proton Elastic Scattering ◽  
Polarized Proton

Results on transverse spin asymmetries in the polarized proton-proton elastic scattering in the CNI region at STAR

2011 ◽  
Author(s):  
D. Svirida ◽  
Marcella Capua ◽  
Roberto Fiore ◽  
Igor Ivanov ◽  
Alessandro Papa ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Transverse Spin ◽  
Proton Proton ◽  
Spin Asymmetries ◽  
Proton Elastic Scattering ◽  
Polarized Proton

scholarly journals Transverse Spin Asymmetries in the CNI Region of Elastic Proton-Proton Scattering at s=200 GeV

2016 ◽  
Vol 40 ◽  
pp. 1660056 ◽  
Author(s):  
Dmitry Svirida
Keyword(s):  
Elastic Scattering ◽  
Center Of Mass ◽  
Heavy Ion ◽  
Transverse Spin ◽  
Relativistic Heavy Ion Collider ◽  
Proton Proton ◽  
Spin Asymmetries ◽  
Double Spin ◽  
Proton Elastic Scattering ◽  
Elastic Proton

Precise measurements of transverse spin asymmetries in proton-proton elastic scattering at very small values of four-momentum transfer squared, [Formula: see text], have been performed using the Relativistic Heavy Ion Collider (RHIC) polarized proton beams. The measurements of both single and double spin asymmetries were made at the center-of-mass energy [Formula: see text] GeV and in the region [Formula: see text] [Formula: see text], which was accessed using Roman Pot devices incorporated into the STAR experimental setup. The obtained set of asymmetries is sensitive to the poorly known hadronic contribution to the spin-flip amplitudes and provide significant constraints for the theoretical descriptions of the reaction mechanism of proton-proton elastic scattering at high energies.

scholarly journals Double spin asymmetries ANN and ASS at s=200 GeV in polarized proton–proton elastic scattering at RHIC

2007 ◽  
Vol 647 (2-3) ◽  
pp. 98-103 ◽  
Author(s):  
S. Bültmann ◽  
I.H. Chiang ◽  
R.E. Chrien ◽  
A. Drees ◽  
R.L. Gill ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Proton Proton ◽  
Spin Asymmetries ◽  
Double Spin ◽  
Proton Elastic Scattering ◽  
Polarized Proton

scholarly journals First measurement of AN at s=200 GeV in polarized proton–proton elastic scattering at RHIC

2006 ◽  
Vol 632 (2-3) ◽  
pp. 167-172 ◽  
Author(s):  
S. Bültmann ◽  
I.H. Chiang ◽  
R.E. Chrien ◽  
A. Drees ◽  
R.L. Gill ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Proton Proton ◽  
Proton Elastic Scattering ◽  
Polarized Proton

scholarly journals SINGLE SPIN ASYMMETRY IN HIGH ENERGY QCD

2012 ◽  
Vol 20 ◽  
pp. 177-186
Author(s):  
YURI V. KOVCHEGOV ◽  
MATTHEW D. SIEVERT
Keyword(s):  
Wave Function ◽  
Light Cone ◽  
Spin Asymmetry ◽  
Production Cross ◽  
High Energy ◽  
Transverse Spin ◽  
Proton Proton ◽  
Spin Asymmetries ◽  
Single Spin ◽  
Polarized Proton

We present the first steps in an effort to incorporate the physics of transverse spin asymmetries into the saturation formalism of high energy QCD. We consider a simple model in which a transversely polarized quark scatters on a proton or nuclear target. Using the light-cone perturbation theory the hadron production cross section can be written as a convolution of the light-cone wave function squared and the interaction with the target. To generate the single transverse spin asymmetry (STSA) either the wave function squared or the interaction with the target has to be T-odd. In this work we use the lowest-order q → q G wave function squared, which is T-even, generating the STSA from the T-odd interaction with the target mediated by an odderon exchange. We study the properties of the obtained STSA, some of which are in qualitative agreement with experiment: STSA increases with increasing projectile xF and is a non-monotonic function of the transverse momentum kT. Our mechanism predicts that the quark STSA in polarized proton–nucleus collisions should be much smaller than in polarized proton–proton collisions. We also observe that the STSA for prompt photons due to our mechanism is zero within the accuracy of the approximation.

scholarly journals Single spin asymmetry AN in polarized proton–proton elastic scattering at s=200 GeV

2013 ◽  
Vol 719 (1-3) ◽  
pp. 62-69 ◽  
Author(s):  
L. Adamczyk ◽  
G. Agakishiev ◽  
M.M. Aggarwal ◽  
Z. Ahammed ◽  
A.V. Alakhverdyants ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Spin Asymmetry ◽  
Single Spin Asymmetry ◽  
Proton Proton ◽  
Single Spin ◽  
Proton Elastic Scattering ◽  
Polarized Proton

Polarized Proton-Proton Elastic Scattering at RHIC

2009 ◽  
Author(s):  
D. Plyku ◽  
Donald G. Crabb ◽  
Yelena Prok ◽  
Matt Poelker ◽  
Simonetta Liuti ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Proton Proton ◽  
Proton Elastic Scattering ◽  
Polarized Proton
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