CERN Accelerating science

LHCb Theses

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2019-12-18
09:32
Measurement of the Relative Branching Fractions of Charmless Three-Body $ B^{+}$ Decays at LHCb / Costa Sobral, Cayo Mar
This thesis documents a measurement of the relative branching fractions of the charmless three-body decays $B^+ \to K^+ K^+ K^-$, $B^+ \to K^+ \pi^+ K^-$, $B^+ \to K^+ \pi^+ \pi^-$, and $B^+ \to \pi^+ \pi^+ \pi^-$, performed using the dataset collected by the LHCb experiment in the years 2011 and 20 [...]
CERN-THESIS-2019-246 - 119 p.

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2019-12-05
17:23
LHCb Upstream Tracker box: Thermal studies and conceptual design / Martensson, Oskar
The LHC (Large Hadron Collider) will have a long shut down in the years of 2019 and 2020, referred to as LS2 [...]
CERN-THESIS-2015-478 - http://www.diva-portal.org/smash/record.jsf?pid=diva2%3A901679&dswid=-3934 : DiVa, 2016. - 106 p.

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2019-11-22
17:51
Probing the Standard Model flavor structure with hadronic beauty and charm decays / D'Argent, Philippe
This dissertation investigates hadronic multi-body decays of beauty and charm mesons providing insights into both the CKM sector of the Standard Model and strong interaction dynamics at the hadronic energy scale [...]
CERN-THESIS-2019-216 - 198 p.

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2019-11-08
17:26
Sub-nanosecond Cherenkov photon detection for LHCb particle identification in high-occupancy conditions and semiconductor tracking for muon scattering tomography / Keizer, Floris
The increase in luminosity during the LHC upgrade programme causes a challenging rise in track multiplicity and hit occupancy in the LHCb detector [...]
CERN-THESIS-2019-203 - 171 p.

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2019-11-08
17:13
Study of rare $b$-baryon decays and test of lepton universality at LHCb / Lisovskyi, Vitalii
Flavor-changing neutral-current $b \rightarrow s \ell^+\ell^-$ transitions are forbidden at tree level in the Standard Model (SM), and can only occur at loop level [...]
CERN-THESIS-2019-202 - 299 p.

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2019-11-04
11:18
Measurement of the CKM angle $\gamma$ and development of a novel, combined GGSZ analysis of $B \rightarrow D^{(*)} h^{(*)}$ decays at LHCb / Smith, Jackson William
CERN-THESIS-2019-185 - 363.

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2019-10-19
18:21
Measurement of the branching fraction of the rare decay $B^+\to K^{*+}μ^+μ^−$ exploiting the $K^{∗+}\to K^+π^0$ decay at the LHCb experiment / Gunther, Andre
In this thesis, a measurement of the branching fraction of the rare B meson decay $B^+\to K^{*+} μ^+μ^−$ relative to the resonant decay $B^+\to J/ψK^{∗+}$ is presented, whereby the $K ^{∗+}$ decay mode $K^{∗+}\to K^+π^0$ is chosen exclusively [...]
CERN-THESIS-2015-475 - 66 p.

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2019-10-19
18:06
First observation of the decay $D^*( 2007 )^0\to D^0 e^+e^-$ in the light of a future Dark Photon search at the LHCb experiment / Gunther, Andre
In this thesis, the first observation of the decay $D^∗( 2007 )^0\to D^0e^+e^−$ and a measurement of its branching ratio relative to the decay $D^∗( 2007 )^0\to D^0γ$ is performed [...]
CERN-THESIS-2018-448 - 116 p.

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2019-10-11
01:32
Searches for Doubly Charmed Baryons at LHCb / Traill, Murdo Thomas
The results of two separate searches for the doubly-charmed Xicc++ particle through the Xicc++ → Λc+K−π+π+ and Xicc++ → D+pK−π+ decay modes are presented in this thesis [...]
CERN-THESIS-2019-156 http://theses.gla.ac.uk/id/eprint/75079. - 240 p.

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2019-09-27
10:49
Detector Control System for SciFi tracker in LHCb / Poplawski, Karol
Large Hadron Collider is experiencing major upgrade during Long Shutdown 2 [...]
CERN-THESIS-2019-142 - 79 p.

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