93 research outputs found
Top Mass Measurement and Bottom Fragmentation at the LHC
We show some recent HERWIG results related to the top quark mass measurement
at the LHC and discuss possible improvements for studies of the bottom quark
fragmentation function in the top decay.Comment: 4 pages, 1 figure. Talk given at DPF 2000, Meeting of the Division of
Particle and Fields of the American Physical Society, Columbus, Ohio, U.S.A.,
9-12 August 200
Progress in bottom-quark fragmentation
I review recent progress on bottom-quark fragmentation in e+e- annihilation,
top-quark decay and H -> b bbar processes. I discuss the implementation of
collinear and soft resummation, and the inclusion of non-perturbative
information taken from LEP and SLD data.Comment: 7 pages, 5 figures. Talk given at 18th International Workshop on High
Energy Physics and Quantum Field Theory (QFTHEP 2004), St.Petersburg, Russia,
17-23 June 200
Interpretation of the top-quark mass results
I discuss recent work aimed at interpreting the top-quark mass measurements
at the LHC and determining the theoretical uncertainty.Comment: 5 pages. Talk given at DIS 2017, April 3-7 2017, Birmingham, UK.
References fixe
Heavy flavours: theory summary
I summarize the theory talks given in the Heavy Flavours Working Group. In
particular, I discuss heavy-flavour parton distribution functions, threshold
resummation for heavy-quark production, progress in fragmentation functions,
quarkonium production, heavy-meson hadroproduction.Comment: 6 pages. Talk given at DIS 2005, XIII Workshop on Deep Inelastic
Scattering, April 27-May 1, 2005, Madison, WI, U.S.
Z' bosons at the LHC in a modified MSSM
I study the production of heavy neutral gauge bosons Z' at the LHC in U(1)'
models, inspired by Grand Unification Theories, as well as in the Sequential
Standard Model, accounting for possible decays into supersymmetric channels. I
shall consider the MSSM and present results on branching ratios and event rates
with sparticle production at the LHC, taking particular care about final states
with charged leptons and missing energy.Comment: 4 pages, 4 tables. Talk given at DIS2012, XX International Workshop
on Deep Inelastic Scattering and Related Subjects, 26-30 March 2012, Bonn,
German
Fragmentation of bottom quarks in top quark decay
We review the main aspects of the fragmentation of bottom quarks in top quark
decay. The NLO b-quark energy spectrum presents large mass logarithms
ln(m_t^2/m_b^2), which can be resummed by the use of the approach of
perturbative fragmentation functions. Large soft contributions in both
coefficient function and initial condition of the perturbative fragmentation
function have been resummed as well. Results on the energy distribution of b
quarks and b-flavoured hadrons are finally presented in both x and moment
spaces.Comment: 6 pages, 5 figures. Talk given at Incontri sulla Fisica delle Alte
Energie, Torino, Italy, 14-16 April 200
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