The Library

Measurement of the spin of the Xi(1530) resonance

Tools

BaBar Collaboration (Including:

Aubert, B., Bona, M., Karyotakis, Y., Lees, J. P., Poireau, V., Prudent, X., Tisserand, V., Zghiche, A., Tico, J. Garra, Grauges, E. et al.
). (2008) Measurement of the spin of the Xi(1530) resonance. Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.78 (No.3). article no.034008 . ISSN 1550-7998

Full text not available from this repository.

Abstract

The properties of the Xi(1530) resonance are investigated in the Lambda(+)(c)->Xi(-)pi K-+(+) decay process. The data sample was collected with the BABAR detector at the SLAC PEP-II asymmetric-energy e(+)e(-) collider operating at center-of-mass energies 10.58 and 10.54 GeV. The corresponding integrated luminosity is approximately 230 fb(-1). The spin of the Xi(1530) is established to be 3/2. The existence of an S-wave amplitude in the Xi(-)pi(+) system is inferred, and its interference with the Xi(1530)(0) amplitude provides the first clear demonstration of the Breit-Wigner phase motion expected for the Xi(1530). The P-1(cos theta(-)(Xi)) Legendre polynomial moment indicates the presence of a significant S-wave amplitude for Xi(-)pi(+) mass values above 1.6 GeV/c(2), and a dip in the mass distribution at approximately 1.7 GeV/c(2) is interpreted as due to the coherent addition of a Xi(1690)(0) contribution to this amplitude. This would imply J(P)=1/2(-) for the Xi(1690). Attempts at fitting the Xi(1530)(0) line shape yield unsatisfactory results, and this failure is attributed to interference effects associated with the amplitudes describing the K+pi(+) and/or Xi K--(+) systems.

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Faculty of Science > Physics
Journal or Publication Title: Physical Review D (Particles, Fields, Gravitation and Cosmology)
Publisher: American Physical Society
ISSN: 1550-7998
Date: August 2008
Volume: Vol.78
Number: No.3
Number of Pages: 14
Page Range: article no.034008
Identification Number: 10.1103/PhysRevD.78.034008
Status: Peer Reviewed
Publication Status: Published
Funder: U. S. Department of Energy and National Science Foundation, Natural Sciences and Engineering Research Council (Canada), Commissariat a l'Energie Atomique and Institut National de Physique Nucleaire et de Physique des Particules (France), Bundesministerium fur Bildung und Forschung and Deutsche Forschungsgemeinschaft (Germany), Istituto Nazionale di Fisica Nucleare (Italy), Foundation for Fundamental Research on Matter (The Netherlands), Research Council of Norway, Ministry of Education and Science of the Russian Federation, Ministerio de Educacion y Ciencia (Spain), Science and Technology Facilities Council (United Kingdom), European Union, A. P. Sloan Foundation
URI: http://wrap.warwick.ac.uk/id/eprint/29394

Data sourced from Thomson Reuters' Web of Knowledge

Request changes to a record

Actions (login required)

View Item View Item