Study of b-quark mass effects in multijet topologies with the DELPHI detector at LEP
| dc.creator | The DELPHI Collaboration | |
| dc.creator | Abdallah, J. | |
| dc.date | 2008-04-24 | |
| dc.date.accessioned | 2026-07-07T10:16:11Z | |
| dc.date.available | 2026-07-07T10:16:11Z | |
| dc.description | The effect of the heavy b-quark mass on the two, three and four-jet rates is studied using LEP data collected by the DELPHI experiment at the Z peak in 1994 and 1995. The rates of b-quark jets and light quark jets (l = uds) in events with n = 2, 3, and 4 jets, together with the ratio of two and four-jet rates of b-quarks with respect to light-quarks, R_n^bl, have been measured with a double-tag technique using the CAMBRIDGE jet-clustering algorithm. A comparison between experimental results and theory (matrix element or Monte Carlo event generators such as PYTHIA, HERWIG and ARIADNE) is done after the hadronisation phase. Using the four-jet observable R_4^bl, a measurement of the b-quark mass using massive leading-order calculations gives: m_b(M_Z) = 3.76 +/- 0.32 (stat) +/- 0.17 (syst) +/- 0.22 (had) +/- 0.90 (theo) GeV/c^2 . This result is compatible with previous three-jet determinations at the M_Z energy scale and with low energy mass measurements evolved to the M_Z scale using QCD Renormalisation Group Equations. | |
| dc.description | 24 pages, 6 figures, Accepted by Eur. Phys. J. C | |
| dc.identifier | https://arxiv.org/abs/0804.3883 | |
| dc.identifier | http://arxiv.org/abs/0804.3883 | |
| dc.identifier | Eur.Phys.J.C55:525-538,2008 | |
| dc.identifier | doi:10.1140/epjc/s10052-008-0631-5 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/173419 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Study of b-quark mass effects in multijet topologies with the DELPHI detector at LEP | |
| dc.type | text |