Shape of the Unitary Triangle and Phase Conventions of the CKM Matrix

نویسنده

  • Yoshio Koide
چکیده

A shape of the unitary triangle versus a CP violating parameter δ depends on the phase conventions of the CKM matrix, because the CP violating parameter δ cannot directly be observed, so that it is not rephasing-invariant. In order to seek for a clue to the quark mass matrix structure and the origin of the CP violation, the dependence of the unitary triangle shape on the parameter δ is systematically investigated. PACS numbers: 12.15.Hh, 11.30.Er and 12.15.Ff

برای دانلود رایگان 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

Quark and Lepton Mass Matrix Structures Suggested by the Observed Unitary Triangle Shape

Under the hypothesis that the CP violating phase parameter δ in the CKM matrix V takes own value so that the radius R(δ) of the circle circumscribed about the unitary triangle takes its minimum value, possible phase conventions of the CKMmatrix are investigated. We find that two of the 9 phase conventions can give favorable predictions for the observed shape of the unitary triangle. One of the ...

متن کامل

Some Prospects for the Determination of the Unitarity Triangle before the LHC Era*

Anticipating improved determinations of mt, |Vcb|, |Vub/Vcb|, BK and FB √ BB in the next five years we make an excursion into the future in order to find a possible picture of the unitarity triangle, of quark mixing and of CP violation around the year 2000. We then analyse what impact on this picture will result from the measurements of the four possibly cleanest quantities: BR(K → πνν̄), xd/xs,...

متن کامل

ar X iv : h ep - e x / 05 10 03 6 v 1 1 3 O ct 2 00 5 Sides of “ The ” Unitarity Triangle : Results from Belle and Babar

The principal goal of the B-factories is to test the CKM paradigm through measurements that overconstrain the shape of the so-called Unitarity Triangle. The sides of the triangle are evaluated through absolute values of several elements of the CKM matrix, so achieving high precision on these is an important aspect of the B-factory program. Recent results from Belle and Babar are presented.

متن کامل

Lattice results relevant to the CKM matrix determination

The most popular way to estimate the amount of CP-violation in the Standard Model is to study the shape of the CKM unitarity triangle involving the third generation of quark flavors. The standard unitarity triangle analysis (UTA) [1], which requires the least theoretical assumption, comprises the K −K0 and B d −B 0 d mixing amplitudes, as well as the SU(3) breaking ratio in the B0−B0 system. Ad...

متن کامل

Unitarity condition method for global fits of the Cabibbo-Kobayashi-Maskawa matrix

We report on an exact method for global fits of the CKM matrix by using the necessary and sufficient conditions the data have to satisfy in order to find a unitary matrix compatible with them, and this method can be applied to both quark and lepton CKM matrices. The key condition writes −1 ≤ cos δ ≤ 1 where δ is the phase that encodes the CP violation, and it is obtained when one describes the ...

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

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2006