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---++ Organisation

We joined the LHCb experiment early in 2011, after first data taking so our responsibilities are for core software and not experimental hardware. This section will keep track of who is working on what. Please feel free to edit your section if I have missed anything out.
   * *Nigel Watson:* Head of the LHCb group. Responsible for implementing new versions of Geant4 within the LHCb framework, and testing performance against previous versions. Working on the rare decay &Lambda;<sub>b</sub> &rarr; &Lambda; &mu;<sup>+</sup> &mu;<sup>-</sup> analysis. 
   * *Cristina Lazzeroni:* Worked on the rare decay K &rarr; pi&mu;<sup>+</sup>&mu;<sup>-</sup> analysis. Also leads the UK effort on the NA62 experiment. 
   * *Simone Bifani*: Research Fellow in Particle Physics. Currently working on [[https://twiki.cern.ch/twiki/bin/view/LHCbPhysics/Bd2KstarMuMuAndOtherEWPenguins][electroweak penguin decays]]<span style="background-color: transparent"> </span><span style="background-color: transparent">and [[https://twiki.cern.ch/twiki/bin/viewauth/LHCbPhysics/ElectroweakPhysics][electroweak physics studies]].</span> 
   * *Mark Slater:* Responsible for GRID operations and GANGA development. 
   * *Jonathan Plews*: Final year student, working on Drell-Yan to µµ cross sections. 
   * *Naomi Cooke:* 4th year student, working on production mechanisms of quarkonia with Run 2 data. 
   * *Paul Swallow:* 3rd year student, studying Rare Decays with a focus on rare &Lambda;<sub>b</sub> decays, attempting to further explore the pattern of B anomalies observed at LHCb during Run 1 and 2 through a Lepton Flavour Violation search of &Lambda;<sub>b</sub> &rarr; &Lambda; e<sup>&pm;</sup> &mu;<sup>&mp;</sup>, which directly probes new physics, and a Lepton Flavour Universality ratio of R(&Lambda;), which is one of the few that use baryons and would give the first observation of the channel &Lambda;<sub>b</sub>&rarr; &Lambda; e<sup>+</sup> e<sup>-</sup>.
   * *Dan Thompson:* 2nd year student, working on lepton flavour violation in &Lambda;<sub>b</sub> &rarr; &Lambda;(1520) &mu;<sup>&pm;</sup> &ell;<sup>&mp;</sup> decays.
---+++ Alumni
   * *Jimmy !McCarthy:* ([[http://etheses.bham.ac.uk/6247/][thesis]]) Carried out the search for &Lambda;b &rarr; &Lambda; &eta;(') decays, [[http://dx.doi.org/10.1007/JHEP09(2015)006][JHEP 1509 (2015) 006]]. Optimised the Geant4 generator cuts used by LHCb in order to improve the performance of Monte Carlo productions, responsible for the XML description of the beam pipe supports. 
   * *Pete Griffith:* ([[http://etheses.bham.ac.uk/7446/][thesis]]) Worked on analysis into &Lambda;<sub>b</sub> &rarr; pK&mu;<sup>+</sup>&mu;<sup>-</sup> , and EM benchmarking tests in Geant4. 
   * *Luca Pescatore:* ([[http://etheses.bham.ac.uk/6739/][thesis]]) Worked on R<sub>K*</sub> analysis, and analysis into the rare decay &Lambda;<sub>b</sub> &rarr; &Lambda;&mu;<sup>+</sup>&mu;<sup>-</sup> from Run I data, including branching fraction and angular analysis ( [[http://dx.doi.org/10.1007/JHEP06(2015)115][JHEP 1506 (2015) 115]]), also set up hadronic and material benchmarking tests for Geant4. 
   * *Tim Williams:* ([[http://etheses.bham.ac.uk/8814/][thesis]]) Worked on search for &Lambda;b &rarr; pK; &eta;(') decay, EM benchmarking for Geant4.
   * *Nathanael Farley:* Worked on the search for B</span><sup style="background-color: transparent">+</sup><sub style="background-color: transparent">c</sub><span style="background-color: transparent"> &rarr; K</span><sup style="background-color: transparent">*0</sup><span style="background-color: transparent">(892) K</span><sup style="background-color: transparent">+ </sup><span style="background-color: transparent">, contributing to B<sup style="background-color: transparent">+</sup><sub style="background-color: transparent">c</sub> &rarr; &#981; <span style="background-color: transparent">K</span><sup style="background-color: transparent">+</sup> at Run 1, performed ageing tests for RICH and contributed to the development of LHCbPR.</span> 
   * *Georgios Chatzikonstantinidis*: [[http://etheses.bham.ac.uk/10353/][thesis]]) Worked on &Lambda;<sub>b</sub> &rarr; &Lambda;&mu;<sup>+</sup>&mu; (run I and II) angular analysis with moments; previously at Nikhef, masters on study of [[https://inspirehep.net/record/1427724?ln=en][CPT and Lorentz-invariance violation in _B_ <sub>s</sub> mixing]] 
   * *Kristian Zarebski*: ([[%ATTACHURL%/ProspectsForKPiMuMu_KZarebski.pdf][thesis]]) Worked on searches for K<sup>±</sup> &rarr; &pi;<sup>±</sup>&mu;<sup>+</sup>&mu;<span style="font-size: 10.8333px"><sup>-</sup></span> at Run 2, <span style="background-color: transparent">B</span><sup style="background-color: transparent">+</sup><sub style="background-color: transparent">c</sub> &rarr; &#981; <span style="background-color: transparent">K</span><sup style="background-color: transparent">+</sup> at Run 1, and maintained the Radiation Length and Hadronic Multiplicity & Cross Section Tests for Sim10, as well as created the Gamma to !DiLepton Conversion Test for validation via LHCbPR. 
   * *Sasha Mazurov:* Former Birmingham colleague. Analysis included [[https://inspirehep.net/record/1315113/][&Chi;<sub>b</sub>(3P), &Chi;<sub>b1,2</sub>(1P)]], also worked on [[https://github.com/LHCbDev/lhcbpr-api][developing]] the new performance and regression testing framework LHCbPR for simulation and more general use. 
   * *Tonino Sergi:* worked on K &rarr; pi&mu;<sup>+</sup>&mu;<sup>-</sup> analysis, currently coordinating integration tests of elementary module for RICH upgrade, developing firmware for irradiation tests of FE board FPGA, carrying out PMT ageing tests, and responsible for RICH aspects of firmware on the TELL40 boards. 
   * *Dmitry Popov:* Maintenance and development of the LHCbPR framework for LHCb software performance monitoring. 
   * *Phil Ilten*: working on Dark Photon searches, HLT trigger and Pythia simulations for LHCb. 
   * *Ryan Calladine*: 4th year student, working on R<sub>K<sup>*</sup></sub> measurement in Run 2 and Muon Multiple Scattering benchmarking tests for Sim10 

---+++ Local Meetings

We currently have [[https://indico.cern.ch/category/5641/][regular meetings]] every Monday, 09:00 in a hybrid format.

---+++ For New Students

Welcome to Birmingham. Click [[General.NewStudents][here]] for information to get yourself started.

---++ Analyses & Other Activities

A full summary of publications with contributions from LHCb at Birmingham can be found on [[https://cds.cern.ch/search?ln=en&as=1&cc=LHCb&m1=a&p1=BIRMINGHAM&f1=&op1=a&m2=a&p2=&f2=&op2=a&m3=a&p3=&f3=&action_search=Search&c=LHCb+Analysis+Notes&c=&c=LHCb+Conference+Proceedings&c=LHCb+Internal+Notes&c=LHCb+Talks&c=&sf=&so=a&rm=&rg=25&sc=1&of=hb][CDS]]

Software repositories
   * [[https://svnweb.cern.ch/cern/wsvn/lhcbbham][S<span style="background-color: transparent">VN]]</span> 
   * <span style="background-color: transparent">[[https://gitlab.cern.ch/lhcb-bham][GIT]]</span> 

---+++ Ongoing and Past Analyses

   * [[https://twiki.cern.ch/twiki/bin/viewauth/LHCbPhysics/LbEtapLFullDataSet][&Lambda;b &rarr; &Lambda; &eta;(') full Run I seach]] 
   * [[https://twiki.cern.ch/twiki/bin/viewauth/LHCbPhysics/BToKSetap][&Lambda;b &rarr; &Lambda; &eta;' 2012 search]] 
   * [[Lbpkmm][&Lambda;<sub>b</sub> &rarr; pK &mu;<sup>+</sup> &mu;<sup>-</sup>]] 
   * [[https://twiki.cern.ch/twiki/bin/view/LHCbPhysics/Lb2Lmumu][&Lambda;b &rarr; &Lambda; &mu;+ &mu;-]] ([[https://cds.cern.ch/record/1554694?ln=en][earlier paper]]) 
   * [[https://twiki.cern.ch/twiki/bin/view/LHCbPhysics/BdToKstLL][RK*]] 
   * [[https://cds.cern.ch/record/1750837/][Measurement of the forward W boson cross-section in pp collisions at s&radic; = 7 TeV]] 
   * [[http://inspirehep.net/record/1107729/][Inclusive W and Z production in the forward region at s&radic;=7 TeV]] 
   * [[PsiDoublePrime][&psi;(3770)]] 
   * [[https://twiki.cern.ch/twiki/bin/view/LHCbPhysics/VRDK2PMM][K+&rarr;&pi;+&mu;+&mu;-]] 

---+++ Hardware Tests

   * <span style="color: blue">[[NiFoilsIrradiation][Ni foils irradiation]]</span> 

---+++ Paper Reviews

   * <span style="color: blue">[[InstitutionalComments][Institutional comments]]</span> 

---+++ Tips & Tricks

A list of tips and tricks discovered during the analysis journey, please DO add new entries if you come across anything that could be beneficial to others!

[[TipsAndTricks][Tips & Tricks]]

---+++ Physics Analysis

These pages are aimed at giving a brief introduction to the tools needed for a physics analysis. It is supposed to be guide only to jog your memory and give some example code. Please refer to the manuals and tutorials for a full description of how everything works.
   * Using [[General.DaVinci][DaVinci]] to fill an nTuple from Data or Monte Carlo. 
   * Using [[ROOT][ROOT]] to analyse the nTuple. 
   * Using the [[General.TMVA][TMVA]] tool to refine your selection. 
   * Using [[RooFit][RooFit]] to perform fits to Data. 

Also a very good set of tutorials are available via the LHCb Starter and Impact kits held at CERN/Online every year:

   * [[https://hsf-training.github.io/analysis-essentials/][Analysis Esssentials]]: An excellent introduction to python followed by advanced tutorials on particle physics applications including multivariate classifiers, re-weighting, likelihood inference, fitting, sPlot followed by an introduction to UNIX and Git.
   * [[https://lhcb.github.io/starterkit-lessons/first-analysis-steps/][LHCb Starter Kit]]: An introduction to the LHCb experiment and the necessary software to start an analysis. Can be followed independently but it is recommended to join the organised "Starterkit Sessions" usually within the last few months of each year. 
   * [[https://lhcb.github.io/starterkit-lessons/second-analysis-steps/][LHCb Impact Kit]]: A follow up to the starterkit, explaining some more advanced techniques and LHCb software that many proponents will require at some point in the course of a PhD. These are often run in late spring each year, recommended for first/second year PhD or anyone that is interested!

---+++ Simulations

Birmingham is responsible for the development and maintenance of software tests used to monitor the progress and regression of LHCb simulation software. These tests are written to run in either standalone Geant4 or Gauss, the main LHCb simulation project which combines particle generation using frameworks such as Pythia, with detector response as modelled by Geant4. The pages below outline information regarding the tests under our responsibility as well as give an overview of how to execute them. The software testing and comparison itself is hosted on LHCbPR2, which displays the information relating to the running of each test on different nightly slots containing various builds of Gauss/LHCb-Geant4 in development. If your test is not displayed for a date where it is expected to have run, this could be due to a failed build of the main software, as such it is recommended you keep an eye on the nightly build results.<br /><br />[[https://lhcb-nightlies.cern.ch/][LHCb Nightlies Website]]

[[LHCbPR][LHCbPR and Test Development]]

[[List of Sim Tests][Summary of Tests & Allocations]]

<a target="_blank" href="http://www.ep.ph.bham.ac.uk/twiki/bin/view/LHCb/LHCbSimulationValidation" title="Validation Studies">Validation Studies</a>

[[https://gitlab.cern.ch/lhcb-datapkg/Gen/DecFiles/blob/master/CONTRIBUTING.md][Creating a New DecFile]]
---++ Useful Information
---+++ Working Locally

[[https://www.ep.ph.bham.ac.uk/twiki/bin/view/LHCb/CernVM][Cern Openstack]]

[[https://twiki.cern.ch/twiki/bin/view/LHCb/CernVM][CernVM]] can be used to access the LHCb software locally. The advantage to working locally is that it is a lot quicker than trying to run emacs etc. over the network.

---++ Useful Links

   * [[http://www.lepp.cornell.edu/~pt267/files/notes/FlavorNotes.pdf%u200E][Just a Taste - Lectures on Flavor Physics]], Yuval Grossman (latex notes by Flip Tanedo), Cornell. 
      * [[http://arxiv.org/pdf/1006.3534v1][related notes from 2009 summer schools]] 
   * [[http://indico.cern.ch/conferenceDisplay.py?confId=225363][Course on Physics at the LHC]], LIP Portugal, 2013 (emphasis on GPDs rather than CMS, but useful nontheless)
Topic revision: r43 - 24 Jan 2022 - _2fC_3dUK_2fO_3deScience_2fOU_3dBirmingham_2fL_3dParticlePhysics_2fCN_3ddaniel_20thompson?
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