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Title: A search for {Sigma}{sup 0}{sub 5}, N{sup 0}{sub 5} and {Theta}{sup ++} pentaquark states.

Abstract

A high-resolution ({sigma}{sub instr.} = 1.5 MeV) search for narrow states ({Lambda} < 10 MeV) with masses of M{sub x} {approx} 1500-1850 MeV in ep {yields} e{prime}K{sup +}X,e{prime}K{sup -}X, and e{prime}{pi}{sup +}X electroproduction at small angles and low Q{sup 2} was performed. These states would be candidate partner states of the reported {Theta}{sup +}(1540) pentaquark. No statistically significant signal was observed in any of the channels at 90% C.L. Upper limits on forward production were determined to be between 0.8% and 4.9% of the {Lambda}(1520) production cross section, depending on the channel and the assumed mass and width of the state.

Authors:
; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); FOR; National Science Foundation (NSF)
OSTI Identifier:
940684
Report Number(s):
ANL/PHY/JA-57534
Journal ID: ISSN 0556-2813; PRVCAN; TRN: US0807169
DOE Contract Number:
DE-AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Phys. Rev. C; Journal Volume: 75; Journal Issue: 2007
Country of Publication:
United States
Language:
ENGLISH
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CROSS SECTIONS; ELECTROPRODUCTION; MASS; ELECTRON-POSITRON COLLISIONS; DETECTION

Citation Formats

Qiang, Y., Annand, J., Arrington, J., Azimov, Ya. I., Bertozzi, W., Reimer, P., Schulte, E., Zheng, X., Physics, MIT, Univ. of Glasgow, and Nuclear Physics Inst.. A search for {Sigma}{sup 0}{sub 5}, N{sup 0}{sub 5} and {Theta}{sup ++} pentaquark states.. United States: N. p., 2007. Web. doi:10.1103/PhysRevC.75.055208.
Qiang, Y., Annand, J., Arrington, J., Azimov, Ya. I., Bertozzi, W., Reimer, P., Schulte, E., Zheng, X., Physics, MIT, Univ. of Glasgow, & Nuclear Physics Inst.. A search for {Sigma}{sup 0}{sub 5}, N{sup 0}{sub 5} and {Theta}{sup ++} pentaquark states.. United States. doi:10.1103/PhysRevC.75.055208.
Qiang, Y., Annand, J., Arrington, J., Azimov, Ya. I., Bertozzi, W., Reimer, P., Schulte, E., Zheng, X., Physics, MIT, Univ. of Glasgow, and Nuclear Physics Inst.. Mon . "A search for {Sigma}{sup 0}{sub 5}, N{sup 0}{sub 5} and {Theta}{sup ++} pentaquark states.". United States. doi:10.1103/PhysRevC.75.055208.
@article{osti_940684,
title = {A search for {Sigma}{sup 0}{sub 5}, N{sup 0}{sub 5} and {Theta}{sup ++} pentaquark states.},
author = {Qiang, Y. and Annand, J. and Arrington, J. and Azimov, Ya. I. and Bertozzi, W. and Reimer, P. and Schulte, E. and Zheng, X. and Physics and MIT and Univ. of Glasgow and Nuclear Physics Inst.},
abstractNote = {A high-resolution ({sigma}{sub instr.} = 1.5 MeV) search for narrow states ({Lambda} < 10 MeV) with masses of M{sub x} {approx} 1500-1850 MeV in ep {yields} e{prime}K{sup +}X,e{prime}K{sup -}X, and e{prime}{pi}{sup +}X electroproduction at small angles and low Q{sup 2} was performed. These states would be candidate partner states of the reported {Theta}{sup +}(1540) pentaquark. No statistically significant signal was observed in any of the channels at 90% C.L. Upper limits on forward production were determined to be between 0.8% and 4.9% of the {Lambda}(1520) production cross section, depending on the channel and the assumed mass and width of the state.},
doi = {10.1103/PhysRevC.75.055208},
journal = {Phys. Rev. C},
number = 2007,
volume = 75,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}