Weak Production of Strange and Charmed Ground-State Baryons in Nuclei

Sobczyk, J. E.; Rocco, N.; Lovato, A.; Nieves, J.

doi:10.1103/PhysRevC.99.065503

Title: Weak Production of Strange and Charmed Ground-State Baryons in Nuclei

Journal Article · Wed Jun 19 00:00:00 EDT 2019 · Phys.Rev.

DOI:https://doi.org/10.1103/PhysRevC.99.065503· OSTI ID:1571814

Sobczyk, J. E. ^[1]; Rocco, N. ^[2]; Lovato, A. ^[3]; Nieves, J. ^[1]

Valencia U., IFIC
Fermilab
TIFPA-INFN, Trento

We present results for the quasielastic weak production of $Λ$ and $Σ$ hyperons induced by $\bar{ν}$ scattering off nuclei in the kinematical region of interest for accelerator neutrino experiments. We employ realistic hole spectral functions and we describe the propagation of the hyperons in the nuclear medium by means of a Monte Carlo cascade. The latter strongly modifies the kinematics and the relative production rates of the hyperons, leading to a nonvanishing $Σ^{+}$ cross section, to a sizable enhancement of the $Λ$ production and to a drastic reduction of the $Σ^{0}$ and $Σ^{-}$ distributions. We also compute the quasielastic weak $Λ_{c}$ production cross section, paying special attention to estimate the uncertainties induced by the model dependence of the vacuum $n \to Λ_{c}$ weak matrix element. In this regard, the recent BESIII measurements of the branching ratios of $Λ_{c} \to Λ l^{+} ν_{l}$ ( $l = e, μ$ ) are used to benchmark the available theoretical predictions.

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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

DOE Contract Number:: AC02-07CH11359

OSTI ID:: 1571814

Report Number(s):: arXiv:1901.10192; FERMILAB-PUB-19-274-T; oai:inspirehep.net:1717483

Journal Information:: Phys.Rev., Vol. C99, Issue 6

Country of Publication:: United States

Language:: English

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Cited By (4)

Polarization of $τ$ in quasielastic (anti)neutrino scattering: The role of spectral functions Sobczyk, J. E.; Rocco, N.; Nieves, J. Physical Review C, Vol. 100, Issue 3 https://doi.org/10.1103/physrevc.100.035501	journal	September 2019
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Polarization of tau in quasielastic (anti)neutrino scattering: the role of spectral functions Sobczyk, J. E.; Rocco, N.; Nieves, J. arXiv https://doi.org/10.48550/arxiv.1906.05656	text	January 2019
Weak production of strange $Ξ$ baryons off the nucleon Alam, M. Rafi; Simo, I. Ruiz arXiv https://doi.org/10.48550/arxiv.1906.07049	text	January 2019

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