A study of the b-quark fragmentation function with the DELPHI detector at LEP I and an averaged distribution obtained at the Z Pole

0375095 - FZÚ 2013 RIV DE eng J - Článek v odborném periodiku
Abdallah, J. - Abreu, A. - Adam, W. - Mašík, Jiří - Němeček, Stanislav - Řídký, Jan - Todorovová, Šárka - Trávníček, Petr - Vrba, Václav … celkem 340 autorů
A study of the b-quark fragmentation function with the DELPHI detector at LEP I and an averaged distribution obtained at the Z Pole.
European Physical Journal C. Roč. 71, č. 2 (2011), 1-50. ISSN 1434-6044. E-ISSN 1434-6052
Grant CEP: GA MŠMT LA08015
Výzkumný záměr: CEZ:AV0Z10100502
Klíčová slova: parton: showers * bottom: fragmentation function * jet: hadronization * CERN * LEP * DELPHI * quantum chromodynamics * PYTHIA * ALEPH * OPAL * SLD
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 3.631, rok: 2011

The nature of b-quark jet hadronisation has been investigated using data taken at the Z peak by the DELPHI detector at LEP. Two complementary methods are used to reconstruct the energy of weakly decaying b-hadrons, E^weak_B. The average value of x^weak_B = E^weak_B/E_beam is measured to be 0.699 +/- 0.011. The resulting x^weak_B distribution is then analysed in the framework of two choices for the perturbative contribution (parton shower and Next to Leading Log QCD calculation) in order to extract measurements of the non-perturbative contribution to be used in studies of b-hadron production in other experimental environments than LEP.
Trvalý link: http://hdl.handle.net/11104/0207846