Studies of Bs2*(5840)0 and Bs1(5830)0 mesons including the observation of the Bs2*(5840)0 → B0KS0 decay in proton- proton collisions at √s=8 TeV
[ X ]
Tarih
2018
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Measurements of B-s2*(5840)(0) and B-s1(5830)(0) mesons are performed using a data sample of proton-proton collisions corresponding to an integrated luminosity of 19.6 fb(-1), collected with the CMS detector at the LHC at a centre-of-mass energy of 8 TeV. The analysis studies P-wave B-s(0) meson decays into B(*)(+)K(-)and B(*)K-0(S)0, where the B+ and B-0 mesons are identified using the decays B+ -> J/psi K+ and B-0 -> J/psi K* (892)(0). The masses of the P-wave B-s(0) meson states are measured and the natural width of the B-s2*(5840)(0) state is determined. The first measurement of the mass difference between the charged and neutral B* mesons is also presented. The B-s2*(5840)(0) decay to (BKS0)-K-0 is observed, together with a measurement of its branching fraction relative to the B-s2*(5840)(0) -> B+K- decay.
Açıklama
Anahtar Kelimeler
CMS, Physics, b hadrons, Heavy flavour spectroscopy, Hadron spectroscopy, Experimental results
Kaynak
European Physical Journal C
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
78
Sayı
11
