J. E. Andrews
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View article: A study in scarlet
A study in scarlet Open
Aims. We investigate the spectroscopic characteristics of intermediate-luminosity Red Transients (ILRTs), a class of elusive objects with peak luminosity between that of classical novae and standard supernovae. Our goal is to provide a ste…
View article: A study in scarlet
A study in scarlet Open
Aims. We investigate the photometric characteristics of a sample of intermediate-luminosity red transients (ILRTs), a class of elusive objects with peak luminosity between that of classical novae and standard supernovae. Our goal is to pro…
View article: SN 2018is: A low-luminosity Type IIP supernova with narrow hydrogen emission lines at early phases
SN 2018is: A low-luminosity Type IIP supernova with narrow hydrogen emission lines at early phases Open
We present a comprehensive photometric and spectroscopic study of the Type IIP supernova (SN) 2018is. The V band luminosity and the expansion velocity at 50 days post-explosion are −15.1 ± 0.2 mag (corrected for A V = 1.34 mag) and 1400 km…
View article: The LHCb upgrade I
The LHCb upgrade I Open
The LHCb upgrade represents a major change of the experiment. The detectors have been almost completely renewed to allow running at an instantaneous luminosity five times larger than that of the previous running periods. Readout of all det…
View article: Search for the Lepton-Flavor-Violating Decays B-s(0) -> pi(+/-mu -/+) and B-0 -> tau(+/-mu -/+)
Search for the Lepton-Flavor-Violating Decays B-s(0) -> pi(+/-mu -/+) and B-0 -> tau(+/-mu -/+) Open
Results are reported from a search for the rare decays B-s(0) -> tau(+/-)mu(+/-) 1T and B -> tau(+/-)mu(+/-), where the r lepton is reconstructed in the channel r- irrg vr. These processes are effectively forbidden in the standard model, h…
View article: Amplitude analysis of B^{+-}->pi^{+-}K^{+}K^{-} decays
Amplitude analysis of B^{+-}->pi^{+-}K^{+}K^{-} decays Open
The first amplitude analysis of the $B^\pm \to \pi^\pm K^+ K^-$ decay is reported based on a data sample corresponding to an integrated luminosity of 3.0 fb$^{-1}$ of $pp$ collisions recorded in 2011 and 2012 with the LHCb detector. The da…
View article: Physics case for an LHCb Upgrade II - Opportunities in flavour physics, and beyond, in the HL-LHC era
Physics case for an LHCb Upgrade II - Opportunities in flavour physics, and beyond, in the HL-LHC era Open
The LHCb Upgrade II will fully exploit the flavour-physics opportunities of the HL-LHC, and study additional physics topics that take advantage of the forward acceptance of the LHCb spectrometer. The LHCb Upgrade I will begin operation in …
View article: Measurement of CP Asymmetries in Two-Body B[subscript (s)][superscript 0] -Meson Decays to Charged Pions and Kaons
Measurement of CP Asymmetries in Two-Body B[subscript (s)][superscript 0] -Meson Decays to Charged Pions and Kaons Open
The time-dependent C P asymmetries in B[superscript 0] →π[superscript +]π[superscript -] and B[subscript s][superscript 0]→K[superscript +]K[superscript -] decays are measured using a data sample of p p collisions corresponding to an integ…
View article: Measurement of the Lifetime of the Doubly Charmed Baryon Ξ[subscript cc][superscript ++]
Measurement of the Lifetime of the Doubly Charmed Baryon Ξ[subscript cc][superscript ++] Open
The first measurement of the lifetime of the doubly charmed baryon Ξ[subscript cc][superscript ++] is presented, with the signal reconstructed in the final state Λ[subscript c][superscript +]K[superscript -]π[superscript +]π[superscript +]…
View article: Amplitude Analysis of the Decay (B)over-bar(0) -> K-S(0)pi(+)pi(-) and First Observation of the CP Asymmetry in (B)over-bar(0) -> K* (892)(-)pi(+)
Amplitude Analysis of the Decay (B)over-bar(0) -> K-S(0)pi(+)pi(-) and First Observation of the CP Asymmetry in (B)over-bar(0) -> K* (892)(-)pi(+) Open
The time-integrated untagged Dalitz plot of the three-body hadronic charmless decay (B) over bar (0 )-> K-S(0)pi(+)pi(- ) is studied using a pp collision data sample recorded with the LHCb detector, corresponding to an integrated luminosit…
View article: Amplitude Analysis of the Decay [¯ over B][superscript 0] → K[subscript S][superscript 0]π[superscript +]π[superscript −] and First Observation of the C P Asymmetry in [¯ over B][superscript 0] → K[supercript *] ( 892 )[superscript −] π[superscript +]
Amplitude Analysis of the Decay [¯ over B][superscript 0] → K[subscript S][superscript 0]π[superscript +]π[superscript −] and First Observation of the C P Asymmetry in [¯ over B][superscript 0] → K[supercript *] ( 892 )[superscript −] π[superscript +] Open
The time-integrated untagged Dalitz plot of the three-body hadronic charmless decay [¯ over B][superscript 0]→K[subscript S][superscript 0]π[superscript +]π[superscript -] is studied using a pp collision data sample recorded with the LHCb …
View article: Study of the decay B+ → K+ π0 at LHCb and mechanical development for the design of the Upstream Tracker
Study of the decay B+ → K+ π0 at LHCb and mechanical development for the design of the Upstream Tracker Open
The LHCb experiment at the Large Hadron Collider (LHC) is designed to measure the properties of particles containing charm (c) and bottom (b) quarks. This dissertation documents two major studies I have completed, one analyzing data collec…