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Title: Search for {theta}{sup +}(1540) Pentaquark in High-Statistics Measurement of {gamma}p{yields}K{sup 0}K{sup +}n at CLAS

Abstract

The exclusive reaction {gamma}p{yields}K{sup 0}K{sup +}n was studied in the photon energy range between 1.6 and 3.8 GeV searching for evidence of the exotic baryon {theta}{sup +}(1540){yields}nK{sup +}. The decay to nK{sup +} requires the assignment of strangeness S=+1 to any observed resonance. Data were collected with the CLAS detector at the Thomas Jefferson National Accelerator Facility corresponding to an integrated luminosity of 70 pb{sup -1}. No evidence for the {theta}{sup +} pentaquark was found. Upper limits were set on the production cross section as function of center-of-mass angle and nK{sup +} mass. The 95% C.L. upper limit on the total cross section for a narrow resonance at 1540 MeV was found to be 0.8 nb.

Authors:
; ; ; ; ;  [1]; ; ; ; ;  [2]; ; ; ; ; ; ; ; ;  [3]
  1. Istituto Nazionale di Fisica Nucleare, Sezione di Genova, and Dipartimento di Fisica, Universita di Genova, 16146 Genova (Italy)
  2. Rensselaer Polytechnic Institute, Troy, New York 12180-3590 (United States)
  3. Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606 (United States) (and others)
Publication Date:
OSTI Identifier:
20777005
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 96; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevLett.96.042001; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CEBAF ACCELERATOR; CENTER-OF-MASS SYSTEM; GAMMA RADIATION; GEV RANGE 01-10; HYPERONS; KAONS NEUTRAL; KAONS PLUS; MASS; NEUTRONS; PARTICLE DECAY; PHOTON-PROTON INTERACTIONS; PROTONS; RESONANCE; STATISTICS; STRANGENESS; TOTAL CROSS SECTIONS

Citation Formats

Battaglieri, M., De Vita, R., Anghinolfi, M., Ricco, G., Ripani, M., Taiuti, M., Kubarovsky, V., Stoler, P., Cummings, J.P., Goett, J., Li Ji, Guo, L., Weygand, D.P., Avakian, H., Boiarinov, S., Brooks, W.K., Burkert, V.D., Degtyarenko, P.V., Deur, A., and Egiyan, H. Search for {theta}{sup +}(1540) Pentaquark in High-Statistics Measurement of {gamma}p{yields}K{sup 0}K{sup +}n at CLAS. United States: N. p., 2006. Web. doi:10.1103/PhysRevLett.96.042001.
Battaglieri, M., De Vita, R., Anghinolfi, M., Ricco, G., Ripani, M., Taiuti, M., Kubarovsky, V., Stoler, P., Cummings, J.P., Goett, J., Li Ji, Guo, L., Weygand, D.P., Avakian, H., Boiarinov, S., Brooks, W.K., Burkert, V.D., Degtyarenko, P.V., Deur, A., & Egiyan, H. Search for {theta}{sup +}(1540) Pentaquark in High-Statistics Measurement of {gamma}p{yields}K{sup 0}K{sup +}n at CLAS. United States. doi:10.1103/PhysRevLett.96.042001.
Battaglieri, M., De Vita, R., Anghinolfi, M., Ricco, G., Ripani, M., Taiuti, M., Kubarovsky, V., Stoler, P., Cummings, J.P., Goett, J., Li Ji, Guo, L., Weygand, D.P., Avakian, H., Boiarinov, S., Brooks, W.K., Burkert, V.D., Degtyarenko, P.V., Deur, A., and Egiyan, H. Fri . "Search for {theta}{sup +}(1540) Pentaquark in High-Statistics Measurement of {gamma}p{yields}K{sup 0}K{sup +}n at CLAS". United States. doi:10.1103/PhysRevLett.96.042001.
@article{osti_20777005,
title = {Search for {theta}{sup +}(1540) Pentaquark in High-Statistics Measurement of {gamma}p{yields}K{sup 0}K{sup +}n at CLAS},
author = {Battaglieri, M. and De Vita, R. and Anghinolfi, M. and Ricco, G. and Ripani, M. and Taiuti, M. and Kubarovsky, V. and Stoler, P. and Cummings, J.P. and Goett, J. and Li Ji and Guo, L. and Weygand, D.P. and Avakian, H. and Boiarinov, S. and Brooks, W.K. and Burkert, V.D. and Degtyarenko, P.V. and Deur, A. and Egiyan, H.},
abstractNote = {The exclusive reaction {gamma}p{yields}K{sup 0}K{sup +}n was studied in the photon energy range between 1.6 and 3.8 GeV searching for evidence of the exotic baryon {theta}{sup +}(1540){yields}nK{sup +}. The decay to nK{sup +} requires the assignment of strangeness S=+1 to any observed resonance. Data were collected with the CLAS detector at the Thomas Jefferson National Accelerator Facility corresponding to an integrated luminosity of 70 pb{sup -1}. No evidence for the {theta}{sup +} pentaquark was found. Upper limits were set on the production cross section as function of center-of-mass angle and nK{sup +} mass. The 95% C.L. upper limit on the total cross section for a narrow resonance at 1540 MeV was found to be 0.8 nb.},
doi = {10.1103/PhysRevLett.96.042001},
journal = {Physical Review Letters},
number = 4,
volume = 96,
place = {United States},
year = {Fri Feb 03 00:00:00 EST 2006},
month = {Fri Feb 03 00:00:00 EST 2006}
}