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Title: pi+- p differential cross sections at low energies

Abstract

Differential cross sections for pi- p and pi+ p elastic scattering were measured at five energies between 19.9 and 43.3 MeV. The use of the CHAOS magnetic spectrometer at TRIUMF, supplemented by a range telescope for muon background suppression, provided simultaneous coverage of a large part of the full angular range, thus allowing very precise relative cross section measurements. The absolute normalization was determined with a typical accuracy of 5 %. This was verified in a simultaneous measurement of muon proton elastic scattering. The measured cross sections show some deviations from phase shift analysis predictions, in particular at large angles and low energies. From the new data we determine the real part of the isospin forward scattering amplitude.

Authors:
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Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA
Sponsoring Org.:
USDOE - Office of Energy Research (ER)
OSTI Identifier:
862053
Report Number(s):
JLAB-PHY-05-455; DOE/ER/40150-3665; nucl-ex/0512006; 6447759
TRN: US0600108
DOE Contract Number:  
AC05-84ER40150
Resource Type:
Journal Article
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ACCURACY; CROSS SECTIONS; DIFFERENTIAL CROSS SECTIONS; ELASTIC SCATTERING; ISOSPIN; MAGNETIC SPECTROMETERS; MUONS; PHASE SHIFT; PROTONS; SCATTERING AMPLITUDES; TELESCOPES

Citation Formats

H. Denz, P. Amaudruz, J.T. Brack, J. Breitschopf, P. Camerini, J.L. Clark, H. Clement, L. Felawka, E. Fragiacomo, E.F. Gibson, N. Grion, G.J. Hofman, B. Jamieson, E.L. Mathie, R. Meier, G. Moloney, D. Ottewell, O. Patarakin, J.D. Patterson, M.M. Pavan, S. Piano, K. Raywood, R.A. Ristinen, R. Rui, M.E. Sevior, G.R. Smith, J. Stahov, R. Tacik, G.J. Wagner, F. von Wrochem, and D.M. Yeomans. pi+- p differential cross sections at low energies. United States: N. p., 2005. Web.
H. Denz, P. Amaudruz, J.T. Brack, J. Breitschopf, P. Camerini, J.L. Clark, H. Clement, L. Felawka, E. Fragiacomo, E.F. Gibson, N. Grion, G.J. Hofman, B. Jamieson, E.L. Mathie, R. Meier, G. Moloney, D. Ottewell, O. Patarakin, J.D. Patterson, M.M. Pavan, S. Piano, K. Raywood, R.A. Ristinen, R. Rui, M.E. Sevior, G.R. Smith, J. Stahov, R. Tacik, G.J. Wagner, F. von Wrochem, & D.M. Yeomans. pi+- p differential cross sections at low energies. United States.
H. Denz, P. Amaudruz, J.T. Brack, J. Breitschopf, P. Camerini, J.L. Clark, H. Clement, L. Felawka, E. Fragiacomo, E.F. Gibson, N. Grion, G.J. Hofman, B. Jamieson, E.L. Mathie, R. Meier, G. Moloney, D. Ottewell, O. Patarakin, J.D. Patterson, M.M. Pavan, S. Piano, K. Raywood, R.A. Ristinen, R. Rui, M.E. Sevior, G.R. Smith, J. Stahov, R. Tacik, G.J. Wagner, F. von Wrochem, and D.M. Yeomans. Sat . "pi+- p differential cross sections at low energies". United States. doi:. https://www.osti.gov/servlets/purl/862053.
@article{osti_862053,
title = {pi+- p differential cross sections at low energies},
author = {H. Denz and P. Amaudruz and J.T. Brack and J. Breitschopf and P. Camerini and J.L. Clark and H. Clement and L. Felawka and E. Fragiacomo and E.F. Gibson and N. Grion and G.J. Hofman and B. Jamieson and E.L. Mathie and R. Meier and G. Moloney and D. Ottewell and O. Patarakin and J.D. Patterson and M.M. Pavan and S. Piano and K. Raywood and R.A. Ristinen and R. Rui and M.E. Sevior and G.R. Smith and J. Stahov and R. Tacik and G.J. Wagner and F. von Wrochem and D.M. Yeomans},
abstractNote = {Differential cross sections for pi- p and pi+ p elastic scattering were measured at five energies between 19.9 and 43.3 MeV. The use of the CHAOS magnetic spectrometer at TRIUMF, supplemented by a range telescope for muon background suppression, provided simultaneous coverage of a large part of the full angular range, thus allowing very precise relative cross section measurements. The absolute normalization was determined with a typical accuracy of 5 %. This was verified in a simultaneous measurement of muon proton elastic scattering. The measured cross sections show some deviations from phase shift analysis predictions, in particular at large angles and low energies. From the new data we determine the real part of the isospin forward scattering amplitude.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Dec 03 00:00:00 EST 2005},
month = {Sat Dec 03 00:00:00 EST 2005}
}