ar X iv : h ep - p h / 97 03 35 8 v 1 1 8 M ar 1 99 7 Do the quark masses run ? Extracting m̄ b ( m Z ) from LEP data

نویسندگان

  • Arcadi Santamaria
  • Mikhail Bilenky
چکیده

The decay width of the Z gauge boson into three jets has already been computed at the leading order (LO) including complete quark mass effects [1–3] where it has been shown that mass effects could be as large as 1% to 6%, depending on the value of the mass and the jet resolution parameter yc. In fact, these effects had already been seen in the experimental tests of the flavor independence of the strong coupling constant [4–8]. In view of that we proposed [3], together with the DELPHI collaboration [9], the possibility of using the ratio [3,6,7]

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

ar X iv : h ep - p h / 97 09 31 3 v 1 1 1 Se p 19 97 1 The running of the b - quark mass from LEP data ∗

The running of the b-quark mass from LEP data ∗ Germán Rodrigo , Arcadi Santamaria b and Mikhail Bilenky c‡ a Intitut für Teoretische Teilchenphysik, Universität Karlsruhe, 76131 Karlsruhe, Germany b Departament de F́ısica Teòrica, IFIC, CSIC-Universitat de València, 46100 Burjassot, València, Spain c Institute of Physics, AS CR, 18040 Prague 8, and Nuclear Physics Institute, AS CR, 25068 Řež(Pr...

متن کامل

ar X iv : h ep - p h / 98 12 43 3 v 1 1 8 D ec 1 99 8 IMPROVED DETERMINATION OF THE b - QUARK MASS

Next-to-leading order calculations of heavy quark three-jet production in e + e − annihilation are reviewed. Their application for the measurement of the b-quark mass at LEP/SLC and to the test of the flavour independence of the strong coupling constant are discussed. Prospects for future improvements are studied.

متن کامل

ar X iv : h ep - p h / 97 12 21 8 v 1 1 D ec 1 99 7 The Λ - parameter and m s of quenched QCD

We explain how scale dependent renormalized quantities can be computed using lattice QCD. Two examples are used: the running coupling and quark masses. A reliable computation of the Λ-parameter in the quenched approximation is presented.

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 2013