A Study of Rare D Decays for the Tau-Charm Factory

نویسنده

  • Ian E. Stockdale
چکیده

We present a study of the sensitivity to rare D decays of a Tau-Charm Factory detector. We consider both flavour changing neutral currents and family number violating decays, and evaluate the impact of varying the solid angle coverage, lepton identification and neutral hadron identification of the detector. We find that stringent demands must be made on the detector design in order to effectively use the expected data sets to observe small signals (branching fractions -1 Oe7 10-8) at a five standard deviation level of statistical significance.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Rare Tau Decays

The possibilities and challenges for studying rare decays of the r with the large data samples from a tau-charm factory are discussed. These studies involve expected decays of the r like multihadronic channels, suppressed decays like 2nd class currents or Cabibbo suppression, and possible unexpected decays.

متن کامل

Charm Physics Opportunities at a Super Flavor Factory

The primary physics goals of a high luminosity e+e− flavor factory are discussed, including the possibilities to perform detailed studies of the CKM mechanism of quark mixing, and constrain virtual Higgs and nonstandard model particle contributions to the dynamics of rare Bu,d,s decays. The large samples of D mesons and tau leptons produced at a flavor factory will result in improved sensitivit...

متن کامل

Weak Decays of Charm Hadrons: the next Lesson on Qcd – and Possibly More!

Second-generation theoretical technologies – heavy quark expansions, QCD sum rules and QCD simulations on the lattice – are arriving on the scene, allowing a treatment of charm decays that is genuinely based on QCD. The availability of those theoretical tools strengthens the case for the need for comprehensive precision measurements of charm decays. It is pointed out that the decays of charm me...

متن کامل

J/Wand Cha rmonium Physics in a Tau Charm Factory*

A high luminosity Tau Charm Factory will yield a sample of 10’ J/y and 5x10’ w’ produced events per month of running. This represents an enormous increase over previous data samples. In this paper the physics of glueballs, charmonium decays, meson spectroscopy, and rare decays of the J/v and w’ that are possible with this data are discussed.

متن کامل

Semileptonic Charm Decay at a Tau Charm Factory *

The full spectrum of Df3 and Dl4 semileptonic decays can be precisely measured at a Tau Charm Factory. Sensitivety to rare semileptonic decays extends to branching fractions as small as 10m3. Improved measurements of Cabibbo-Kobayashi-Maska wa matrix elements V,, and Vcd can be obtained. With an improved theoretical understanding, semileptonic measurements can test the unitarity of the second r...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1999