Search for neutral B meson decays to two charged leptons

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

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

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Search for flavor-changing-neutral-current d meson decays.

We study the flavor-changing-neutral-current process c-->u micro(+) micro(-) using 1.3 fb(-1) of pp[over ] collisions at square root s = 1.96 TeV recorded by the D0 detector operating at the Fermilab Tevatron Collider. We see clear indications of the charged-current mediated D(s)(+) and D(+)-->phipi(+) --> micro(+)micro(-)pi(+) final states with significance greater than 4 standard deviations a...

متن کامل

Method for flavor tagging in neutral B meson decays.

So far, CP violation has been seen only in decays of neutral kaons. The leading contender for description of this effect, a non-trivial phase in the Cabibbo-KobayashiMaskawa (CKM) matrix [1], makes specific predictions for CP-violating asymmetries in decays of mesons containing a b quark. These asymmetries are particularly easily interpreted in decays of neutral B mesons to CP eigenstates such ...

متن کامل

Tau decays into three charged leptons and two neutrinos.

We have searched for the radiative leptonic tau decays ! eee e and ! ee using 3.60 fb 1 of data collected by the CLEO-II experiment at CESR. We present a rst observation of the ! eee e process. For this channel we measure the branching fraction B( ! eee e) = (2:8 1:4 0:4) 10 . An upper limit is established for the second channel: B( ! ee ) < 3:6 10 5 at 90% CL. Both results are consistent with ...

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

ژورنال

عنوان ژورنال: Physics Letters B

سال: 1997

ISSN: 0370-2693

DOI: 10.1016/s0370-2693(96)01583-3