Speaker
Prof.
Sankagiri Umasankar
(Indian Institute of Technology Bombay)
Description
In the time evolution of neutral meson systems, a perfect quantum
coherence is usually assumed. The important quantities of the $B^0_d$
system, such as $\sin 2 \beta$ and $\Delta m_d$, are determined under
this assumption. However, the meson system interacts with its environment.
This interaction can lead to decoherence in the entangled mesons even
before they decay. In our formalism this decoherence is modelled by a single
parameter $\lambda$. It is desirable to re-examine the procedures of
determination of $\sin 2 \beta$ and $\Delta m_d$ in meson systems with
decoherence. We find that the present values of these two quantities are
modulated by $\lambda$. Re-analysis of $B^0_d$ data from B-factories and
LHCb can lead to a clean determination of $\lambda$, $\sin 2 \beta$ and
$\Delta m_d$.
additional information
eprint number: arXiv:1504:02893
Author
Prof.
Sankagiri Umasankar
(Indian Institute of Technology Bombay)
Co-authors
Prof.
Ashutosh Kumar Alok
(Indian Institute of Technology Jodhpur)
Prof.
Subhashish Banerjee
(Indian Institute of Technology)
