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Title: Corrections to the elastic proton-proton analyzing power parametrization at high energies

Abstract

The Polarized Atomic Hydrogen Gas Jet Target polarimeter (HJET) was designed to measure the absolute polarization of the proton beams at the Relativistic Heavy Ion Collider. In these measurements, the small scattering angle elastic p p single A N ( t ) and double A N N ( t ) spin analyzing powers can be precisely determined. The experimental accuracy achieved at HJET requires corrections to the A N ( t ) parametrization, conventionally used for such studies. In this paper, we evaluate the corrections to the analyzing powers due to (i) the differences between the electromagnetic and hadronic form factors and (ii) the m p 2 / s terms in the elastic spin-flip p p electromagnetic amplitude. The corresponding alterations of the evaluated hadronic spin-flip amplitudes are about the same as the experimental uncertainties of the HJET measurements. The proposed corrections may have implications for the elastic p p forward real-to-imaginary amplitude ratios ρ determined in unpolarized p p experiments.

Authors:
ORCiD logo
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1580141
Alternate Identifier(s):
OSTI ID: 1580260
Report Number(s):
[BNL-212478-2019-JAAM]
[Journal ID: ISSN 2470-0010; PRVDAQ; 116017]
Grant/Contract Number:  
[AC02-98CH10886; SC0012704]
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
[Journal Name: Physical Review D Journal Volume: 100 Journal Issue: 11]; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Poblaguev, A. A. Corrections to the elastic proton-proton analyzing power parametrization at high energies. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.100.116017.
Poblaguev, A. A. Corrections to the elastic proton-proton analyzing power parametrization at high energies. United States. doi:10.1103/PhysRevD.100.116017.
Poblaguev, A. A. Fri . "Corrections to the elastic proton-proton analyzing power parametrization at high energies". United States. doi:10.1103/PhysRevD.100.116017.
@article{osti_1580141,
title = {Corrections to the elastic proton-proton analyzing power parametrization at high energies},
author = {Poblaguev, A. A.},
abstractNote = {The Polarized Atomic Hydrogen Gas Jet Target polarimeter (HJET) was designed to measure the absolute polarization of the proton beams at the Relativistic Heavy Ion Collider. In these measurements, the small scattering angle elastic pp single AN(t) and double ANN(t) spin analyzing powers can be precisely determined. The experimental accuracy achieved at HJET requires corrections to the AN(t) parametrization, conventionally used for such studies. In this paper, we evaluate the corrections to the analyzing powers due to (i) the differences between the electromagnetic and hadronic form factors and (ii) the mp2/s terms in the elastic spin-flip pp electromagnetic amplitude. The corresponding alterations of the evaluated hadronic spin-flip amplitudes are about the same as the experimental uncertainties of the HJET measurements. The proposed corrections may have implications for the elastic pp forward real-to-imaginary amplitude ratios ρ determined in unpolarized pp experiments.},
doi = {10.1103/PhysRevD.100.116017},
journal = {Physical Review D},
number = [11],
volume = [100],
place = {United States},
year = {2019},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevD.100.116017

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