TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Ruiz Valls, P.
AU  - Sanchez Mayordomo, C.
PY  - 2016
DA  - 2016//
TI  - Measurement of the properties of the Xi(b)(*0) baryon
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 161
EP  - 19pp
VL  - 05
IS  - 5
PB  - Springer
KW  - Spectroscopy
KW  - B physics
KW  - Particle and resonance production
KW  - Hadron-Hadron scattering (experiments)
AB  - We perform a search for near-threshold I (b) (0) resonances decaying to I (b) (-) pi (+) in a sample of proton-proton collision data corresponding to an integrated luminosity of 3 fb(-1) collected by the LHCb experiment. We observe one resonant state, with the following properties: m(Xi b*0) – m (Xi b-) – m (pi+) = 15.727 +/- 0.068 (stat) +/- 0.023 (syst) MeV/c2, Gamma(Xi b*0) = 0.90 +/- 0.16 (stat) +/- 0.08 (syst) MeV. This confirms the previous observation by the CMS collaboration. The state is consistent with the J (P) = 3/2(+)aEuro integral I (b) (au 0) resonance expected in the quark model. This is the most precise determination of the mass and the first measurement of the natural width of this state. We have also measured the ratio sigma(pp -> Xi b*0 X)B(Xi b*0 -> Xi b-pi+)/sigma(pp -> Xi b- X) = 0.28 +/- 0.03 (stat.) +/- 0.01 (syst).
SN  - 1029-8479
UR  - http://arxiv.org/abs/1604.03896
UR  - https://doi.org/10.1007/JHEP05(2016)161
DO  - 10.1007/JHEP05(2016)161
LA  - English
N1  - WOS:000376893000001
ID  - LHCbCollaborationAaij_etal2016
ER  -