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Title: Structure in pp elastic polarisation and pomeron-flip

Abstract

An investigation of pp (and np) elastic polarisations in the region 10 less than or equal to p/sub lab/ less than or equal to 300 GeV/c and absolute value of t less than or equal to 0.9 (GeV/c)/sup 2/ is carried out using the Regge pole model with phenomenologically parameterized residues. In an attempt to reproduce the polarisation structure for absolute value of t less than or equal to 0.5 (GeV/c)/sup 2/ and p/sub lab/ greater than or equal to 45 GeV/c a Pomeron-flip contribution is included. It is shown that a Pomeron-flip contribution, although yielding a good overall chi/sup 2//pt for a fit to the data, cannot reproduce the polarisation zero observed in the aforementioned (p/sub lab/,t) region (we use ..cap alpha../sub p/ = 0.23). It is however found that if one invokes an Odderon-flip contribution the polarisation structure can be easily reproduced. The Odderon is the odd-signatured partner of the Pomeron and has isospin one. Its existence has been recently invoked in order to account for the disturbing energy dependence of the np CEX data.

Authors:
Publication Date:
Research Org.:
Punjab Univ., Lahore, Pakistan
OSTI Identifier:
6760745
Resource Type:
Journal Article
Journal Name:
Hadronic J.; (United States)
Additional Journal Information:
Journal Volume: 3:4
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; PROTON-PROTON INTERACTIONS; ELASTIC SCATTERING; SPIN ORIENTATION; GEV RANGE 10-100; GEV RANGE 100-1000; POMERANCHUK PARTICLES; REGGE POLES; THEORETICAL DATA; BARYON-BARYON INTERACTIONS; BOSONS; DATA; ELEMENTARY PARTICLES; ENERGY RANGE; GEV RANGE; HADRON-HADRON INTERACTIONS; HADRONS; INFORMATION; INTERACTIONS; MESONS; NUCLEON-NUCLEON INTERACTIONS; NUMERICAL DATA; ORIENTATION; PARTICLE INTERACTIONS; POSTULATED PARTICLES; PROTON-NUCLEON INTERACTIONS; SCATTERING; 645202* - High Energy Physics- Particle Interactions & Properties-Theoretical- Electromagnetic Interactions & Properties

Citation Formats

Kamran, M. Structure in pp elastic polarisation and pomeron-flip. United States: N. p., 1980. Web.
Kamran, M. Structure in pp elastic polarisation and pomeron-flip. United States.
Kamran, M. 1980. "Structure in pp elastic polarisation and pomeron-flip". United States.
@article{osti_6760745,
title = {Structure in pp elastic polarisation and pomeron-flip},
author = {Kamran, M},
abstractNote = {An investigation of pp (and np) elastic polarisations in the region 10 less than or equal to p/sub lab/ less than or equal to 300 GeV/c and absolute value of t less than or equal to 0.9 (GeV/c)/sup 2/ is carried out using the Regge pole model with phenomenologically parameterized residues. In an attempt to reproduce the polarisation structure for absolute value of t less than or equal to 0.5 (GeV/c)/sup 2/ and p/sub lab/ greater than or equal to 45 GeV/c a Pomeron-flip contribution is included. It is shown that a Pomeron-flip contribution, although yielding a good overall chi/sup 2//pt for a fit to the data, cannot reproduce the polarisation zero observed in the aforementioned (p/sub lab/,t) region (we use ..cap alpha../sub p/ = 0.23). It is however found that if one invokes an Odderon-flip contribution the polarisation structure can be easily reproduced. The Odderon is the odd-signatured partner of the Pomeron and has isospin one. Its existence has been recently invoked in order to account for the disturbing energy dependence of the np CEX data.},
doi = {},
url = {https://www.osti.gov/biblio/6760745}, journal = {Hadronic J.; (United States)},
number = ,
volume = 3:4,
place = {United States},
year = {Sun Jun 01 00:00:00 EDT 1980},
month = {Sun Jun 01 00:00:00 EDT 1980}
}