RT Journal Article
T1 Measurement of the properties of the Ξ ∗ 0b baryon
A1 LHCb Collaboration, 
A1 Adeva Andany, Bernardo
A1 Borsato, Martino
A1 Chobanova, Veronika
A1 Dosil Suárez, Álvaro
A1 Fernández Albor, Víctor Manuel
A1 Gallas Torreira, Abraham Antonio
A1 García Pardiñas, Julián
A1 Hernando Morata, José Ángel
A1 Lemos Cid, Edgar
A1 Lucio Martínez, Miriam
A1 Martínez Santos, Diego
A1 Plo Casasus, Máximo
A1 Prisciandaro, Jessica
A1 Ramos Pernas, Miguel
A1 Romero Vidal, Antonio
A1 Saborido Silva, Juan José
A1 Sanmartín Sedes, Brais
A1 Santamarina Ríos, Cibrán
A1 Vázquez Regueiro, Pablo
A1 Vázquez Sierra, Carlos
A1 Vieites Díaz, María
K1 Spectroscopy
K1 B physics
K1 Particle and resonance production
K1 Hadron-Hadron scattering (experiments)
AB We perform a search for near-threshold Ξ  0b resonances decaying to Ξ  −b π + 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(Ξ∗0b)−m(Ξ−b)−m(π+)=15.727±0.068(stat)±0.023(syst)MeV/c2Γ(Ξ∗0b)=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+  Ξ  ∗ 0b 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 ratioσ(pp→Ξ∗0bX)B(Ξ∗0b→Ξ−bπ+)σ(pp→Ξ−bX)=0.28±0.03(stat.)±0.01(syst.).
PB Springer
SN 1029-8479
YR 2016
FD 2016
LK http://hdl.handle.net/10347/22220
UL http://hdl.handle.net/10347/22220
LA eng
NO Aaij, R., Abellán Beteta, C., Adeva, B. et al. Measurement of the properties of the Ξ  ∗ 0b baryon. J. High Energ. Phys. 2016, 161 (2016). https://doi.org/10.1007/JHEP05(2016)161
DS Minerva
RD 28 abr 2026