The Time Dependent CP Violation in Charm

Physics – High Energy Physics – High Energy Physics - Experiment

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

6 pages, 5 figures, 4 tables, contribution to the proceedings of the XXVI course of "Les Rencontres de Physique de la Vallee d

Scientific paper

A model which describes the time-dependent CP formalism in $D^0$ decays has recently been proposed. There it has been highlighted a possible measurement of the angle $\beta_c$, in the charm unitarity triangle, using the decays $D^0\to K^+ K^-$ and $D^0\to \pi^+ \pi^-$, and a measurement of the mixing phase $\phi_{MIX}$. The same method can be used to measure the value of the parameter $x$, one of the two parameters defining charm mixing. We numerically evaluate the impact of a time-dependent analysis in terms of the possible outcomes from present and future experiments. We consider the scenarios of correlated $D^0$ mesons production at the center of mass energy of the $\Psi(3770)$ at Super$B$, uncorrelated production at the center of mass energy of the $\Upsilon(4S)$ at Super$B$ and Belle II, and LHCb. Recently a hint of direct CP violation in charm decays was reported by the LHCb collaboration, we estimate the rate of time-dependent asymmetry that could be achieved using their available data, and we generalise the result for the full LHCb program. We conclude that LHCb is already able to perform a first measurement of $\beta_{c,eff}$, and slightly improve the present constraints on the parameters $x$ and $\phi_{MIX}$. A more precise determination of $\beta_{c,eff}$, $\phi_{MIX}$ and $x$ will require a larger data sample, and most probably the cleaner environment of the new high luminosities $B$-factories (both Super$B$ and Belle II) will be needed. We show that Super$B$ will be able to measure $\beta_{c,eff}$ and $\phi_{MIX}$ with a precision of $1.4^o$ and improve the precision on $x$ by a factor of two.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

The Time Dependent CP Violation in Charm does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Time Dependent CP Violation in Charm, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Time Dependent CP Violation in Charm will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-716723

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.