scholarly journals Measurement of the Parity-Violating Longitudinal Single-Spin Asymmetry forW±Boson Production in Polarized Proton-Proton Collisions ats=500  GeV

2011 ◽  
Vol 106 (6) ◽  
Author(s):  
M. M. Aggarwal ◽  
Z. Ahammed ◽  
A. V. Alakhverdyants ◽  
I. Alekseev ◽  
J. Alford ◽  
...  
Keyword(s):  
Spin Asymmetry ◽  
Single Spin Asymmetry ◽  
Boson Production ◽  
Proton Proton ◽  
Proton Collisions ◽  
Single Spin ◽  
Polarized Proton ◽  
Proton Proton Collisions

scholarly journals Transverse single spin asymmetry for very forward π0 production in polarized proton-proton collisions at √s = 510 GeV

2019 ◽  
Vol 208 ◽  
pp. 05007
Author(s):  
M. H. Kim ◽  
B. Hong ◽  
Y. Goto ◽  
I. Nakagawa ◽  
R. Seidl ◽  
...  
Keyword(s):  
Spin Asymmetry ◽  
Single Spin Asymmetry ◽  
Potential Contribution ◽  
Momentum Range ◽  
Proton Proton ◽  
Proton Collisions ◽  
Single Spin ◽  
New Information ◽  
Polarized Proton ◽  
Proton Proton Collisions

Transverse single spin asymmetry, AN, of very forward π0 production from polarized p + p collisions provides new information toward an understanding of its production mechanism. AN of forward π0 in the pseudorapidity region of 3 < η < 4 has been described by the partonic structure of the proton in the perturbative QCD framework. However, recent data indicates a potential contribution from not only partonic but also diffractive interactions. In order to provide a new insight on the origin of the AN, we measured the very forward π0 production in the pseudorapidity region of 6 < η from √s = 510 GeV polarized p + p collisions at RHIC in 2017. We report our measurement of the very forward π0 over the transverse momentum range of 0 < pT < 1 GeV/c and the preliminary result.

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