Measurement of the mass and width of the Ds1(2536)+ meson
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Lees-2011-Measurement of the m.pdf
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Author(s)
Dujmic, Denis
Sciolla, Gabriella
Cowan, Ray F
Date Issued
April 2011
Journal
Physical Review D
Publisher
American Physical Society
Citation
Lees, J. et al. “Measurement of the mass and width of the D_{s1}(2536)^{+} meson.” Physical Review D 83 (2011): n. pag. Web. 9 Dec. 2011. © 2011 American Physical Society
Version
Final published version
Abstract
The decay width and mass of the D[subscript s1](2536)[superscript +] meson are measured via the decay channel D[subscript s1]+→D*+KS0 using 385 fb[superscript -1] of data recorded with the BABAR detector in the vicinity of the Υ(4S) resonance at the PEP-II asymmetric-energy electron-positron collider. The result for the decay width is Γ(D[subscript s1][superscript +])=0.92±0.03(stat.)±0.04(syst.) MeV. For the mass, a value of m(D[subscript s1][superscript +])=2535.08±0.01(stat.)±0.15(syst.) MeV/c[superscript 2] is obtained. The mass difference between the D[subscript s1][superscript +] and the D[superscript *+] is measured to be m(D[subscript s1]+)-m(D[superscript *+])=524.83±0.01(stat.)±0.04(syst.) MeV/c[superscript 2], representing a significant improvement compared to the current world average. The unnatural spin-parity assignment for the D[subscript s1]+ meson is confirmed.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.83.072003
