Glen Cowan's Home Page

Professor Glen Cowan
Royal Holloway, University 
of London Royal Holloway, University of London
Egham, Surrey, TW20 0EX
Phone: + 44 (0)1784 443452
Fax:+ 44 (0)1784 472794
E-mail: or
Room: Wilson 262

* My father Eugene (Bud) Cowan used to build cloud chambers. Here are some photos.

* The EU-funded Training Network INSIGHTS.

* Some outreach: Talk for the 2020 All-Rusian Science Festival NAUKA 0+ Статистический анализ данных и научный метод; RHUL Evening Lecture 8 Dec 2017, Using Machine Learning at the Large Hadron Collider (podcast and slides); Antimatter: the picture that was not reversed. Talk given to the West of London Astronomical Society, 12 March 2007 (ppt, pdf).

* RHUL sees the 2004 Venus Transit. Link to Guardian with our jet + planet photo. And here is a related talk I gave at the IoP Physics Update Course at RHUL, 9 April 2005.

* Royal Holloway physics department and its moodle page.

* Royal Holloway particle physics group and its twiki page, the Physics Department twiki page.

* The course page for Statistical Data Analysis (for Particle Physics PhD and PH4515), and the versions of this course for the University of Aachen Graduiertenkolleg, for YETI 2007 (IPPP Durham) and for the CERN Summer Student Lecture Programme. Here is a short version on youtube from a school at the Galileo Galilei Institute in Florence, January 2017.

* Lectures on Statistical Inference for Particle and Astro Physics at the Weizmann Institute (March 2015); Lectures on Statistical Methods for Discovery and Limits at the University of Freiburg Graduiertenkolleg Physik an Hadron-Beschleunigern (June 2011), at the DESY Terascale School (October 2011), and at the NIKHEF Onderzoekschool Subatomaire Fysica (December 2011).

*The "Errors on Errors Paper", aka G. Cowan, Statistical Models with Uncertain Error Parameters", Eur. Phys. J. C (2019) 79:133 or arXiv:1809.05778. Here is a talk (slides, video) from the 2019 Phystat-nu meeting at CERN, or this seminar in Beijing. An application is described in G. Cowan, Effect of Systematic Uncertainty Estimation on the Muon g − 2 Anomaly, EPJ Web of Conferences 258, 09002 (2022), arXiv:2107.02652. See also E. Canonero, A. Brazzale and G. Cowan, "Higher-order asymptotic corrections and their application to the Gamma Variance Model", Eur. Phys. J. C (2023) 83:1100, arXiv:2304.10574.

*The "Asimov Paper", aka Asymptotic formulae for likelihood-based tests of new physics, by Cowan, Cranmer, Gross and Vitells, EPJC 71 (2011) 1554. or arXiv:1007.1727. Some of the content is described in this talk (Cambridge seminar, 14.10.10).

* Materials for the lectures on statistical methods for particle physics at Tsinghua University, 12-16 April, 2010. Webpage for iStep 2015 (Jinan).

* Academic training lectures on Statistics at the LHC, CERN, 14-17 June, 2010.

* The materials for my lectures on advanced statistical methods for data analysis (multivariate methods) for the University of Mainz (Klausurtagung des GK "Eichtheorien -- experimentelle Tests...", Bullay/Mosel, 15-17 September, 2008). These are updated versions of my lectures on multivariate statistical methods in particle physics (CERN Academic Training Lectures, 16-19 June, 2008).

* The University of London Postgraduate Lectures in Particle Physics.

* The home page of Statistical Data Analysis (the book)

* Course pages for Particle Physics: PH3520 and PH4442.

* Old course pages for PH2900 (astronomy), PH3930 (particle astrophysics), and PH2150 (scientific computing skills), PH3140 (Galaxies seminar), PH3010 (MSci skills).

* The ALEPH and Cosmo-LEP experiments at CERN, and some recent ALEPH work.

* The BaBar experiment at SLAC, the UK BaBar home page, the RHUL BaBar computing page, and some BaBar work.

* The ATLAS Experiment. The ATLAS Statistics Forum page, its hypernews and agenda pages; more useful ATLAS stuff, and ATLAS glance.

* The Interdisciplinary Cluster Workshop on Statistics 2014, Garching, Germany. The Conference on Statistical Challenges in Modern Astronomy IV at the Penn State Center for Astrostatistics, 12-15 June 2006.

* The XIV International Workshop on Deep Inelastic Scattering (DIS 2006), 20/April/2006 - 24/April/2006, Tsukuba, Japan.

* The Conference on Statistical Problems in Particle Physics, Astrophysics and Cosmology at SLAC 8th - 11th September 2003. (Glen Cowan reports!); PHYSTAT05 in Oxford from 12-15 September 2005, PHYSTAT-LHC at CERN, 27-29 June 2007; PHYSTAT 2011 at CERN, 17-19 January 2011.

* The Topical Seminar on Frontier of Particle Physics 2004: QCD and Light Hadrons , Beijing, 26-30 September, 2004.

* Some interesting links.

* Some basic stuff about baseball and pictures of the 2005 staff-student game.

* Some astronomy stuff.

* The 2014 IOP Joint HEPP/APP Meeting at Royal Holloway, 7-9 April 2014.

* My Google Scholar page and my Inspire profile.

Glen Cowan