Measurement ofCPviolation inBs0→ϕϕdecays

Abstract

A measurement of the decay time-dependent CP-violating asymmetry in B 0 s → ϕϕ decays is presented, along with measurements of the T-odd triple-product asymmetries. In this decay channel, the CP-violating weak phase arises from the interference between B

Analysis of the strong decays Ds3 *(2860) $\rightarrow$ DK, D*K with QCD sum rules

“…[18], we assign the D * s3 (2860) to be a D-wave cs meson, and study the mass and decay constant (or the current-meson coupling constant) of the D * s3 (2860) with the QCD sum rules. The predicted mass M D * s3 = (2.86 ± 0.10) GeV is in excellent agreement with the experimental value M D * s3 = (2860.5 ± 2.6 ± 2.5 ± 6.0) MeV from the LHCb collaboration [13,14]. We obtain further support by reproducing the mass of the D * s3 (2860) based on the QCD sum rules.…”

“…In 2014, the LHCb collaboration observed a structure at 2.86 GeV in the D 0 K − mass distribution in the Dalitz plot analysis of the decays B 0 s → D 0 K − π + , the structure contains both spin-1 (the D * − s1 (2860)) and spin-3 (the D * − s3 (2860)) components [13,14]. Furthermore, the LHCb collaboration obtained the conclusion that the D * sJ (2860) observed in the inclusive e + e − → D 0 K − X production by the BaBar collaboration and in the pp → D 0 K − X processes by the LHCb collaboration consists of at least two particles [2,15].…”

The CKM Parameters

“…Cabibbo-suppressed decay modes, in which these topologies are relatively more prominent, can be used to constrain such effects. Methods of using selected measurements constraining the sizes of penguin amplitudes have been described elsewhere [94,100,101,167,168] In this case, the measured value is −0.17 ± 0.15 ± 0.03 rad [171], which is compatible with the SM expectation.…”

Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016

“…Such an analysis also makes it possible to fit directly for φ s (φφ). A constraint on φ s (φφ) has been obtained by LHCb using 3.0 fb −1 of data [397]. The result is φ s (φφ) = −0.17 ± 0.15 ± 0.03 rad where the first uncertainty is statistical and the second is systematic.…”