2 research outputs found
Topics in Electroweak Physics
We briefly discuss five topics in Precision Electroweak Physics: i) the
recently proposed Effective Scheme of Renormalization, ii) evidence for
electroweak bosonic corrections derived from the radiative correction
Delta_r_eff, iii) an approach to estimate the scale of new physics in a
hypothetical Higgs-less scenario, iv) simple and accurate formulae for s^2_eff,
M_W, Gamma_l, and their physical applications, v) a recent proposal concerning
the field renormalization constant for unstable particles.Comment: 5 pages, talk presented at the International Symposium Radcor 2002,
September 8-13, Kloster Banz, German
Next-to-Leading Order Fragmentation Functions for Pions and Kaons
We present new sets of fragmentation functions for charged pions and kaons,
both at leading and next-to-leading order. They are fitted to TPC data taken at
energy ~GeV and describe excellently a wealth of other
data on charged-hadron production, ranging from ~GeV way up to
LEP~1 energy. They also agree with data on the production of neutral pions and
kaons, if one makes the natural assumption that the respective fragmentation
functions are related to the charged counterparts by SU(2) symmetry. We also
list simple parameterizations of the and dependence of our results,
which may be implemented conveniently in applications.Comment: 22 p. + 12 figures (1 compressed Ps-file), DESY 94-124 figure file
replaced by uuencoded fil