Study on viability of Gain Stabilization of SiPMs and determination of b-quark fragmentation fraction ratio f_c/f_u in pp collisions at √s = 13 TeV with the ATLAS detector
dc.contributor.author | Træet, Are Sivertsen | |
dc.date.accessioned | 2017-10-09T16:16:13Z | |
dc.date.available | 2017-10-09T16:16:13Z | |
dc.date.issued | 2017-09-05 | |
dc.date.submitted | 2017-09-04T22:00:03Z | |
dc.identifier.uri | https://hdl.handle.net/1956/16748 | |
dc.description.abstract | Gain Stabilization of SiPMs through the usage of an external board to regulate bias voltage based on temperature yields a variation in gain of less than 0.5 % using a system of four SiPMs with temperature readout in close vicinity. A proper system test should still be explored, although these preliminary tests show promising results. The estimation of B ^+_c mass and the fragmentation ratio f_c/f_u using 2015 and 2016 ATLAS data at √s = 13 TeV yields M_B^+_c = 6268.32 ± 4.77(stat) ± 3.78(syst) MeV c^−2 and f_c/f_u = 3.06 ± 0.51_stat ± 2.72_syst × 10^−4 . The fragmentation ratio of f_c/f_u is determined through the relative efficiency-corrected yields of B^+_c → J/ψπ^+ over B^+_u → J/ψK^+ and the branching fraction ratio B (B^± → J/ψK^±) /B (B^±_c → J/ψπ^±). | en_US |
dc.language.iso | eng | eng |
dc.publisher | The University of Bergen | en_US |
dc.title | Study on viability of Gain Stabilization of SiPMs and determination of b-quark fragmentation fraction ratio f_c/f_u in pp collisions at √s = 13 TeV with the ATLAS detector | en_US |
dc.type | Master thesis | |
dc.date.updated | 2017-10-02T22:00:02Z | |
dc.rights.holder | Copyright the Author. All rights reserved | en_US |
dc.description.degree | Masteroppgave i fysikk | en_US |
dc.description.localcode | PHYS399 | |
dc.subject.nus | 752199 | eng |
fs.subjectcode | PHYS399 | |
fs.unitcode | 12-24-00 |