Search for Exotic Baryons in 800 GeV pp{yields}p{xi}{sup {+-}}{pi}{sup {+-}}X Reactions

Christian, D C; Gottschalk, E E; Gutierrez, G; Wang, M H.L.S.; Wehmann, A; Felix, J; Moreno, G; Reyes, M A; Sosa, M; Hartouni, E P; Knapp, B C; Kreisler, M N

doi:10.1103/PhysRevLett.95.152001

Title: Search for Exotic Baryons in 800 GeV pp{yields}p{xi}{sup {+-}}{pi}{sup {+-}}X Reactions

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Abstract

We report the results of a high-statistics, sensitive search for narrow baryon resonances decaying to {xi}{sup -}{pi}{sup -}, {xi}{sup -}{pi}{sup +}, {xi}{sup +}{pi}{sup -}, and {xi}{sup +}{pi}{sup +}. The only resonances observed are the well known {xi}{sup 0}(1530) and {xi}{sup 0}(1530). No evidence is found for the states near 1862 MeV, previously reported by NA49 [Phys. Rev. Lett. 92, 042003 (2003)]. At the 95% confidence level, we find the upper limit for the production of a Gaussian enhancement with {sigma}=7.6 MeV in the {xi}{sup -}{pi}{sup -} effective mass spectrum to be 0.3% of the number of observed {xi}{sup 0}(1530){yields}{xi}{sup -}{pi}{sup +}. We find similarly restrictive upper limits for an enhancement at 1862 MeV in the {xi}{sup -}{pi}{sup +}, {xi}{sup +}{pi}{sup -}, and {xi}{sup +}{pi}{sup +} mass spectra.

Authors:

Christian, D C; Gottschalk, E E; Gutierrez, G; Wang, M H.L.S.; Wehmann, A ^[1]; Felix, J; Moreno, G; Reyes, M A; Sosa, M ^[2]; Hartouni, E P ^[3]; Knapp, B C ^[4]; Kreisler, M N ^[3]

Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
Universidad de Guanajuato, 37150 Leon, Guanajuato (Mexico)
Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)
Columbia University, Nevis Laboratory, Irvington, New York 10533 (United States)

Publication Date:: Fri Oct 07 00:00:00 EDT 2005

OSTI Identifier:: 20696540

Resource Type:: Journal Article

Journal Name:: Physical Review Letters

Additional Journal Information:: Journal Volume: 95; Journal Issue: 15; Other Information: DOI: 10.1103/PhysRevLett.95.152001; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0031-9007

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; EFFECTIVE MASS; GEV RANGE 01-10; GEV RANGE 100-1000; HADRONIC PARTICLE DECAY; INCLUSIVE INTERACTIONS; MASS SPECTRA; PIONS MINUS; PIONS PLUS; PROTON-PROTON INTERACTIONS; RESONANCE PARTICLES; XI MINUS PARTICLES; XI NEUTRAL PARTICLES; XI-1530 BARYONS

Citation Formats


                    Christian, D C, Gottschalk, E E, Gutierrez, G, Wang, M H.L.S., Wehmann, A, Felix, J, Moreno, G, Reyes, M A, Sosa, M, Hartouni, E P, Knapp, B C, Kreisler, M N, and University of Massachusetts, Amherst, Massachusetts 01003. Search for Exotic Baryons in 800 GeV pp{yields}p{xi}{sup {+-}}{pi}{sup {+-}}X Reactions.  United States: N. p., 2005. 
        Web.  doi:10.1103/PhysRevLett.95.152001.

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                    Christian, D C, Gottschalk, E E, Gutierrez, G, Wang, M H.L.S., Wehmann, A, Felix, J, Moreno, G, Reyes, M A, Sosa, M, Hartouni, E P, Knapp, B C, Kreisler, M N, & University of Massachusetts, Amherst, Massachusetts 01003. Search for Exotic Baryons in 800 GeV pp{yields}p{xi}{sup {+-}}{pi}{sup {+-}}X Reactions.  United States.  https://doi.org/10.1103/PhysRevLett.95.152001

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                    Christian, D C, Gottschalk, E E, Gutierrez, G, Wang, M H.L.S., Wehmann, A, Felix, J, Moreno, G, Reyes, M A, Sosa, M, Hartouni, E P, Knapp, B C, Kreisler, M N, and University of Massachusetts, Amherst, Massachusetts 01003. 2005.  
        "Search for Exotic Baryons in 800 GeV pp{yields}p{xi}{sup {+-}}{pi}{sup {+-}}X Reactions".  United States.  https://doi.org/10.1103/PhysRevLett.95.152001.

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@article{osti_20696540,

  title        = {Search for Exotic Baryons in 800 GeV pp{yields}p{xi}{sup {+-}}{pi}{sup {+-}}X Reactions},

  author       = {Christian, D C and Gottschalk, E E and Gutierrez, G and Wang, M H.L.S. and Wehmann, A and Felix, J and Moreno, G and Reyes, M A and Sosa, M and Hartouni, E P and Knapp, B C and Kreisler, M N and University of Massachusetts, Amherst, Massachusetts 01003},

  abstractNote = {We report the results of a high-statistics, sensitive search for narrow baryon resonances decaying to {xi}{sup -}{pi}{sup -}, {xi}{sup -}{pi}{sup +}, {xi}{sup +}{pi}{sup -}, and {xi}{sup +}{pi}{sup +}. The only resonances observed are the well known {xi}{sup 0}(1530) and {xi}{sup 0}(1530). No evidence is found for the states near 1862 MeV, previously reported by NA49 [Phys. Rev. Lett. 92, 042003 (2003)]. At the 95% confidence level, we find the upper limit for the production of a Gaussian enhancement with {sigma}=7.6 MeV in the {xi}{sup -}{pi}{sup -} effective mass spectrum to be 0.3% of the number of observed {xi}{sup 0}(1530){yields}{xi}{sup -}{pi}{sup +}. We find similarly restrictive upper limits for an enhancement at 1862 MeV in the {xi}{sup -}{pi}{sup +}, {xi}{sup +}{pi}{sup -}, and {xi}{sup +}{pi}{sup +} mass spectra.},

  doi          = {10.1103/PhysRevLett.95.152001},

  url          = {https://www.osti.gov/biblio/20696540},
  journal      = {Physical Review Letters},

  issn         = {0031-9007},

  number       = 15,

  volume       = 95,

  place        = {United States},

  year         = {Fri Oct 07 00:00:00 EDT 2005},

  month        = {Fri Oct 07 00:00:00 EDT 2005}

}

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