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Title: Correlations of π N partial waves for multireaction analyses

Journal Article · · Physical Review C
 [1];  [2];  [3];  [4]
  1. George Washington Univ., Washington, D.C. (United States). Institute for Nuclear Studies; Astronomy Physics, and Statistics Institute of Sciences; Dept. of Physics; Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  2. George Washington Univ., Washington, D.C. (United States). Dept. of Physics
  3. Univ. Bonn, Bonn (Germany). Helmholtz-Institut fur Strahlen -und Kernphysik (Theorie) and Bethe Center for Theoretical Physics
  4. George Washington Univ., Washington, D.C. (United States). Institute for Nuclear Studies and Dept. of Physics

In the search for missing baryonic resonances, many analyses include data from a variety of pion- and photon-induced reactions. For elastic πN scattering, however, usually the partial waves of the SAID (Scattering Analysis Interactive Database) or other groups are fitted, instead of data. We provide the partial-wave covariance matrices needed to perform correlated χ2 fits, in which the obtained χ2 equals the actual χ2 up to nonlinear and normalization corrections. For any analysis relying on partial waves extracted from elastic pion scattering, this is a prerequisite to assess the significance of resonance signals and to assign any uncertainty on results. Lastly, the influence of systematic errors is also considered.

Research Organization:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-06OR23177; SC0014133; 1452055; 1415459
OSTI ID:
1306202
Alternate ID(s):
OSTI ID: 1257494
Report Number(s):
JLAB-THY-16-2320; DOE/OR/23177-3904; arXiv:1603.07265; PRVCAN
Journal Information:
Physical Review C, Vol. 93, Issue 6; Related Information: Jefferson Lab publications link: https://misportal.jlab.org/ul/publications/view_pub.cfm?pub_id=14473; ISSN 2469-9985
Publisher:
APSCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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