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Charm and bottom production at particle colliders

Jimenez, Fabricio LU (2014) In LU-TP 14-15 FYTM01 20141
Theoretical Particle Physics
Department of Astronomy and Theoretical Physics
Abstract
High energy particle collisions involve complex physics, beyond analytical control. Instead, Monte Carlo event generators like Pythia have been used to simulate particle collisions since decades. A study of the production of heavy quarks (namely, charm and bottom) is presented for two different scenarios: lepton (e+e−) and hadron (pp) collisions. Electron- positron collisions at the Z0 resonance are simulated and the result used to study the secondary bb production rate (gbb) and the D∗± meson energy spectrum. Results are com- pared with experimental data. Three proposed modifications to the Pythia algorithm regarding the g → QQ branching are also tested. For the gbb, the default and one of the alternatives fit the experimental... (More)
High energy particle collisions involve complex physics, beyond analytical control. Instead, Monte Carlo event generators like Pythia have been used to simulate particle collisions since decades. A study of the production of heavy quarks (namely, charm and bottom) is presented for two different scenarios: lepton (e+e−) and hadron (pp) collisions. Electron- positron collisions at the Z0 resonance are simulated and the result used to study the secondary bb production rate (gbb) and the D∗± meson energy spectrum. Results are com- pared with experimental data. Three proposed modifications to the Pythia algorithm regarding the g → QQ branching are also tested. For the gbb, the default and one of the alternatives fit the experimental measurement. The study is inconclusive for the D∗± spectrum. Proton-proton collisions at typical LHC energies are also simulated; the correlations between produced B meson pairs are studied through the azimuthal angular separation, the relative rapidities and the R distance, according to the production mechanisms. The default and the alternative options are also compared in the hadronic case. (Less)
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author
Jimenez, Fabricio LU
supervisor
organization
course
FYTM01 20141
year
type
H1 - Master's Degree (One Year)
subject
keywords
High Energy Physics. Collider Physics. Monte Carlo Event Generators. Pythia. Heavy flavours.
publication/series
LU-TP 14-15
language
English
id
4498752
date added to LUP
2014-06-27 14:31:45
date last changed
2014-06-27 14:31:45
@misc{4498752,
  abstract     = {High energy particle collisions involve complex physics, beyond analytical control. Instead, Monte Carlo event generators like Pythia have been used to simulate particle collisions since decades. A study of the production of heavy quarks (namely, charm and bottom) is presented for two different scenarios: lepton (e+e−) and hadron (pp) collisions. Electron- positron collisions at the Z0 resonance are simulated and the result used to study the secondary bb production rate (gbb) and the D∗± meson energy spectrum. Results are com- pared with experimental data. Three proposed modifications to the Pythia algorithm regarding the g → QQ branching are also tested. For the gbb, the default and one of the alternatives fit the experimental measurement. The study is inconclusive for the D∗± spectrum. Proton-proton collisions at typical LHC energies are also simulated; the correlations between produced B meson pairs are studied through the azimuthal angular separation, the relative rapidities and the R distance, according to the production mechanisms. The default and the alternative options are also compared in the hadronic case.},
  author       = {Jimenez, Fabricio},
  keyword      = {High Energy Physics. Collider Physics. Monte Carlo Event Generators. Pythia. Heavy flavours.},
  language     = {eng},
  note         = {Student Paper},
  series       = {LU-TP 14-15},
  title        = {Charm and bottom production at particle colliders},
  year         = {2014},
}