Speaker
Haofei Luo
(University of Edinburgh (GB))
Description
Using 3fb$^{-1}$ of $pp$ collision data collected at $\sqrt{s} = 7$ and 8 TeV by LHCb experiment in 2011 and 2012, first observation is made of the suppressed flavor changing neutral current (FCNC) decay mode $B_s^0 \to \phi (K^+ K^-) f_0(980) (\pi^+ \pi^-)$. In the $\pi^+ \pi^-$ invariant mass range below 1100 MeV/c$^2$, the branching ratio, using the reference decay $B_s^0 \to \phi \phi$, is measured to be:
`$\mathcal{B}(B_s^0 \to \phi \pi^+ \pi^-) = [1.73 \pm 0.14 \pm 0.12 ^{+ 0.55}_{- 0.46}\, \mathcal{B}({B_s^0 \to \phi \phi})] \times 10^{-6} $`
This presentation also focus on the measurement other decays with same final state and give some evidence for $B_s^0 \to \phi \rho^0(770)$ and $B_d^0 \to \phi \pi^+ \pi^-$ decays.
Author
Haofei Luo
(University of Edinburgh (GB))
