Particle Physics Group

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Particle Physics Seminars 2006

Seminars 2003     Seminars 2004 (First Half)     Seminars 2004 (Second Half)     Seminars 2005



New seminar location: Blackett Lecture Theatre

Same old time: Wednesdays 2-3pm


Wed 18 Jan.   Brian Fulton (York)
Position sensitive CZT detectors for the COBRA neutrinoless double beta decay project (Abstract)

Wed 25 Jan.   Theory Speaker
Title (Abstract)

Wed 1 Feb.   John Goodby (York)   Schuster Colloquium
Liquid Crystals: Some Unusual States of Condensed Matter

Wed 8 Feb.   Yoshi Uchida (Imperial)
KamLAND. Neutrino Physics and Beyond (Abstract)

Wed 15 Feb.   Tara Shears (Liverpool)
LHCb status and physics prospects (Abstract)

Wed 22 Feb.  Theory Speaker (Institute)
Title (Abstract)

Wed 1 Mar.   Alan McKane (Manchester)   Schuster Colloquium
Inaugural Lecture

Wed 8 Mar.   Apostolos Pilaftsis (CERN & Manchester)
F_D Term Hybrid Inflation: Towards a Minimal Particle-Cosmology Standard Model (Abstract)

Tue 14 Mar. 2nd Floor Seminar Room.  Chris White (Cambridge)
Heavy Flavour Production at High Energy (Abstract)

Wed 22 Mar.   Terry Wyatt (Manchester)
Recent Results from the Dzero Experiment (Abstract)

Wed 29 Mar.   Amanda Cooper-Sarkar (Oxford)
PDFs from HERA to the LHC (Abstract) (slides)

Thu 30 Mar. Note unusual day   Emily Nurse (UCL)
The W mass and width at CDF (Abstract)

Wed 5 Apr.   Prof Dave Wark (Imperial)   Schuster Colloquium
Neutrino Oscillations: From the Heavens to the Earth

Wed 26 Apr.   Theory Seminar: Oliver Rosten (Southampton)
General Computations without fixing the gauge (Abstract)

Wed 3 May.   Schuster Speaker (Institute)   Schuster Colloquium
Title

Wed 10 May.   Alfons Weber (Oxford)
First MINOS results from the NuMI beam (Abstract)

Wed 17 May.   Theory Seminar: Jeff Forshaw (Manchester)
Superleading logarithms in QCD (Abstract)

Wed 24 May.   Chris Booth (Sheffield)
MICE: Muon Ionisation Cooling Experiment. (Abstract)

Tues 8 August 14:00. (VC room?)   Joe Incandela (UC Santa Barbara)
The CMS tracker and Higgs -> ttbar (Abstract)

Abstracts

25 Jan   Theory :
Abstract

8 Feb   Yoshi Uchida :
The KamLAND experiment, which has been taking data for the past four years, has provided us with clear observations which give us insight on the nature of neutrino oscillations. This phenomenon has made neutrinos the first particles to go beyond the Standard Model of Particle Physics. Now, as KamLAND continues to make the observations that will move the field further in pursuit of precision measurements, it is also uncovering other mysteries, including those of the Earth, the Sun, and matter itself. I will discuss KamLAND and its neutrino oscillation results, and also present the recent results on geoneutrinos and nucleon decay, and the improvements that are currently being made to allow it to enter a new phase of experimentation.

15 Feb   Tara Shears :
LHCb is an experiment dedicated to investigating the matter-antimatter asymmetry of the universe through the study of B hadrons. It will start taking data at CERN's LHC collider in 2007. The challenges facing LHCb are enormous; triggering specific B decays with branching ratios O(10-6) with reasonable rates; providing particle identification in a wide momentum region; providing precision tracking in a region close to the beam. In this seminar I will briefly review the physics programme of LHCb, describe the detector and give the current build status, and mention the predicted physics reach for the first year of running.

22 Feb   Theory :
Abstract

8 Mar   Apostolos Pilaftsis :
Abstract: I will first briefly review the problems encountered in the standard big-bang cosmology, and how these can be solved naturally by inflation within the context of field theory. I will then discuss a novel and minimal supersymmetric framework of inflation introduced recently, which has been called F_D-term hybrid inflation. The F_D-term model realizes lepton-number violation at the electroweak scale. As a consequence of this, the baryon asymmetry in the Universe can be explained by thermal resonant leptogenesis, in a way independent of any pre-existing lepton- or baryon-number abundance. In particular, the model can be tested at future $e^+e^-$ high-energy colliders and low-energy experiments, such as SuperNEMO, MEG and MECO. Its possible implications for Higgs phenomenology at the LHC will be briefly discussed.

14 Mar   Chris White :
Abstract: Heavy Flavour Production at High Energy. Two important issues affecting the successful description of scattering data at high energies are the production of heavy quarks in the final state, and the divergence of the perturbation series due to high energy logarithms. I will review the problems caused by both of these, and present a scheme for accounting for heavy flavours in deep inelastic scattering which allows high energy resummations to be consistently implemented alongside the fixed order QCD expansion. Results from a global fit to current data will be presented, and the impact on predictions for the longitudinal structure function discussed. Finally, I will discuss an important step in extending the analysis (approximately) to NLL order in the high energy resummation.

22 Mar   Terry Wyatt :
Abstract: With 1 inverse fb of proton-antiproton collisions available for physics analysis, Dzero has produced a number of exciting results for this year's winter conferences. I'll review some of these results, including a first direct two-sided bound on the B0_s oscillation frequency, and discuss the prospects for 8 inverse fb.

29 Mar   Amanda Cooper-Sarkar :
Abstract: At the LHC high precision (SM and BSM) cross section predictions require precision Parton Distribution Functions (PDFs)

  • How do we determine PDFs?
  • What are the uncertainties on these determinations?
  • How do PDF uncertainties affect discovery physics?
  • Can we investigate "standard candle" processes which are insensitive to PDF uncertainties to calibrate experiment and measure machine luminosity?
  • Can we increase precision on PDFs using early LHC SM measurements ? E.g. High (but not too high)-ET jets; gluon, W+/W; gluon and sea quark.
  • Will we learn more about QCD in extended kinematic regions ? e.g small x, high density

30 Mar   Emily Nurse :
Abstract:

The mass and width of the W boson are significantly less well measured than those of the Z boson. The measurements of these Standard Model parameters in the present run of the Tevatron is expected to significantly improve the World average results. Reducing these uncertainties provides a stringent test of the Standard Model and helps to constrain the mass of the elusive Higgs boson. I will describe the current status of the W mass and width analyses at CDF and give estimates of the expected uncertainties.

29 Mar   Alfons Weber :
Abstract:

The MINOS experiment is a long baseline neutrino experiment, designed to perform a precision study of neutrino oscillations in the muon neutrino sector. The experiment uses the new, high powered neutrino beam at Fermilab and two large neutrino detectors: the 1 kton near detector at Fermilab and the 5.4 kton far detector at a distance of 735 km in the Soudan mine, Minnesota. MINOS began data taking in March 2005 and has already gathered sufficient data, less than one tenth of the final exposure, to improve on existing world measurements. In this talk, the MINOS experiment and its physics aims are discussed, the current status described and preliminary results from the first few months of data taking presented.
   Email: Steve Snow (Experiment)       Mrinal Dasgupta (Theory)


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