arXiv subjects

Remi Louvot

Publications and source records attributed to Remi Louvot.

3 recordsLinked to original sources

arXiv2011

Recent Belle results from Y(5S) sample

The large data sample recorded with the Belle detector at the Y(5S) energy provides a unique opportunity to study the poorly-known $\bs$ meson. Two analyses, performed with a data sample representing an integrated luminosity of 121 /fb, are presented: the measurement of the Bs0->J/psi f0(980) and Bs0->J/psi f0(1370) branching fractions, and the 5sigma observation of the decay Bs0-bar->Lambda(c)+ pi- Lambda-bar which is the first observation of a baryonic Bs0 decay. In addition, we present new results of a measurement of the CKM angle phi_1(beta) with B pi tagged events.

hep-ex↗

arXiv2011

Bs0 Decays at Belle

The large data sample recorded with the Belle detector at the Υ(5S) energy provides a unique opportunity to study the poorly-known Bs meson. Several analyses, made with a data sample representing an integrated luminosity of 23.6 /fb, are presented. We report the study of the large-signal Bs {\to} Ds- h+ (h+ = π+, ρ+) decays. In addition, several results on Bs decays related to CP-violation studies are described. Beside the non-flavor specific Bs {\to} Ds K decay, the following CP-eigenstate decays are studied: Bs {\to} J/ψ η('), Bs {\to} J/ψ f0(980), the charmless Bs {\to} hh (h = π+, K+, KS0) and the three Bs {\to} Ds(*) Ds(*) modes from which ΔΓs(CP)/Γs is extracted.

hep-ex↗

arXiv2011

Bs0 Decays at Belle

The large data sample recorded with the Belle detector at the Y(5S) energy provides a unique opportunity to study the poorly-known Bs0 meson. Several analyses, made with a data sample representing an integrated luminosity of 23.6 /fb, are presented. We report the study of the large-signal Bs0 -> Ds(*)- h+ (h+ = pi+ or rho+) decays including the first observations of Bs0 -> Ds*- pi+ and Bs0 -> Ds(*)- rho+. In addition, several results on CP-eigenstate Bs0 decays are described. These include the study of the Bs0 -> J/psi eta(') and Bs0 -> J/psi f0(980) decays, the charmless Bs0 -> K+ K-, Bs0 -> pi+ pi pi- and Bs0 -> Kshort Kshort decays and the simultaneous fit of the three Bs0 -> Ds(*)Ds(*) modes from which Delta(Gamma_s)/Gamma_s is extracted. The preliminary measurement of B(Bs0 -> J/psi f0(980))<1.63x10^-4 (at 90% C.L.) is presented for the first time.

hep-ex↗