Nuclear theory and event generators for charge-changing neutrino reactions

Van Orden, J. W.; Donnelly, T. W.

doi:10.1103/PhysRevC.100.044620

Nuclear theory and event generators for charge-changing neutrino reactions

Journal Article · Thu Oct 31 00:00:00 EDT 2019 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.100.044620· OSTI ID:1572887

^[1]; Donnelly, T. W. ^[2]

Old Dominion Univ., Norfolk, VA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

Semi-inclusive $$CC\nu$$ cross sections based on factorized cross sections are studied for a selection of spectral function models with the objective of facilitating the choice of models for use as input into event generators. The basic formalism for such cross sections is presented along with an introduction to constructing spectral functions for simple models based on the independent particle shell model (IPSM), the relativistic Fermi gas model (RFG) and a local density approximation (LDA) based on the RFG. Spectral functions for these models are shown for $$^{16}$$O along with a more sophisticated model which includes nucleon-nucleon interactions.. Inclusive and semi-inclusive cross sections are calculated for these models. Although the inclusive cross sections are all of similar size and shape, the semi-inclusive cross sections are subtantially different depending upon whether the spectral functions contain some features associated with the nuclear shell model or are based on the RFG and LDA models. Here, calculations of average values and standard deviations of the initial neutrino energy using the semi-inclusive cross section for the various models are presented and indicate that there may be simple kinematical descriptions of the average neutrino energy which is common to all of these models.

View Accepted Manuscript (DOE)

Research Organization:: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Grant/Contract Number:: FG02-94ER40818; AC05-06OR23177; FG02-97ER41028

OSTI ID:: 1572887

Report Number(s):: JLAB-THY--19-3012; DOE/OR/23177--4758; arXiv:1908.00932

Journal Information:: Physical Review C, Journal Name: Physical Review C Journal Issue: 4 Vol. 100; ISSN PRVCAN; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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