TY  - JOUR
AU  - BABAR Collaboration (Lees, J. P. et al
AU  - Lopez-March, N.
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
PY  - 2011
DA  - 2011//
TI  - Measurement of the mass and width of the D_s1 (2536)+  meson
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 072003
EP  - 14pp
VL  - 83
IS  - 7
PB  - Amer Physical Soc
AB  - The decay width and mass of the D-s1(2536)(+) meson are measured via the decay channel D-s1(+) -> (D*+KS0) using 385 fb(-1) of data recorded with the BABAR detector in the vicinity of the Gamma(4S) resonance at the PEP-II asymmetric-energy electron-positron collider. The result for the decay width is Gamma(D-s1(+)) = 92 +/- 0.03(stat.) +/- 0.04(syst.) MeV. For the mass, a value of m(D-s1(+)) = 2535.08 +/- 0.01(stat.) +/- 0.15(syst.) MeV/c(2) is obtained. The mass difference between the D-s1(+) and the D*+ is measured to be m(D-s1(+)) – m(D*+) = 524.83 +/- 0.01(stat.) +/- 0.04(syst.) MeV/c(2), representing a significant improvement compared to the current world average. The unnatural spin-parity assignment for the D-s1(+) meson is confirmed.
SN  - 1550-7998
UR  - http://arxiv.org/abs/arXiv:1103.2675
UR  - https://doi.org/10.1103/PhysRevD.83.072003
DO  - 10.1103/PhysRevD.83.072003
LA  - English
N1  - ISI:000290109300001
ID  - BABARCollaborationLees_etal2011
ER  -