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Title: Search for an exotic S=-2, Q=-2 baryon resonance in proton-proton interactions at $$\sqrt{s_{NN}}$$ = 17.3 GeV

Abstract

Pentaquark states have been extensively investigated theoretically in the context of the constituent quark model. In this paper experimental searches in the $$Xi^{-}\pi^{-}$$, $$Xi^{-}\pi^{+}$$, $$Xi^{+}\pi^{-}$$ and $$Xi^{+}\pi^{+}$$ invariant mass spectra in proton-proton interactions at $$\sqrt{s}$$=17.3 GeV are presented. Previous possible evidence from the NA49 collaboration of the existence of a narrow $$Xi^{-}\pi^{-}$$ baryon resonance in p+p interactions is not confirmed with almost 10 times greater event statistics. The search was performed using the NA61/SHINE detector which reuses the main components of the NA49 apparatus. No signal was observed with either the selection cuts of NA49 or a newly optimised set.

Authors:
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
NA61/SHINE
OSTI Identifier:
1592141
Report Number(s):
FERMILAB-PUB-20-015-AD-SCD; arXiv:1912.12198
oai:inspirehep.net:1773266
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
TBD
Additional Journal Information:
Journal Name: TBD
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Aduszkiewicz, A., and et al. Search for an exotic S=-2, Q=-2 baryon resonance in proton-proton interactions at $\sqrt{s_{NN}}$ = 17.3 GeV. United States: N. p., 2020. Web.
Aduszkiewicz, A., & et al. Search for an exotic S=-2, Q=-2 baryon resonance in proton-proton interactions at $\sqrt{s_{NN}}$ = 17.3 GeV. United States.
Aduszkiewicz, A., and et al. Thu . "Search for an exotic S=-2, Q=-2 baryon resonance in proton-proton interactions at $\sqrt{s_{NN}}$ = 17.3 GeV". United States. https://www.osti.gov/servlets/purl/1592141.
@article{osti_1592141,
title = {Search for an exotic S=-2, Q=-2 baryon resonance in proton-proton interactions at $\sqrt{s_{NN}}$ = 17.3 GeV},
author = {Aduszkiewicz, A. and et al.},
abstractNote = {Pentaquark states have been extensively investigated theoretically in the context of the constituent quark model. In this paper experimental searches in the $Xi^{-}\pi^{-}$, $Xi^{-}\pi^{+}$, $Xi^{+}\pi^{-}$ and $Xi^{+}\pi^{+}$ invariant mass spectra in proton-proton interactions at $\sqrt{s}$=17.3 GeV are presented. Previous possible evidence from the NA49 collaboration of the existence of a narrow $Xi^{-}\pi^{-}$ baryon resonance in p+p interactions is not confirmed with almost 10 times greater event statistics. The search was performed using the NA61/SHINE detector which reuses the main components of the NA49 apparatus. No signal was observed with either the selection cuts of NA49 or a newly optimised set.},
doi = {},
journal = {TBD},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {1}
}