3,452 research outputs found
Mass Resolution Corrections at the LHC
The utility of jet spectroscopy at the LHC is compromised by the existence of
multiple interactions within a bunch crossing. The energy deposits from these
interactions at the design luminosity of the LHC may degrade the dijet mass
resolution unless great care is taken. Energy clusters making up the jet can be
required to have an energy flow with respect to the jet axis which resembles
QCD. In addition, subsidiary information such as the jet mass or the out of jet
cone mass or transverse momentum can be deployed so as to alleviate the adverse
effects of pileup.Comment: 9 pages, 7 figure
Welfare and warfare an uneasy mix: personal experiences of and organisational responses to emotional and mental health issues in young ex-service personnel
'Shell-shock', which is now known as Post Traumatic Stress Disorder (PTSD), was first identified during the First World War and since this time the mental health of service personnel has been an issue of concern, particularly during times of armed conflict. This is an exploratory piece of research, the purpose of which is to provide information from a range of stakeholders, primarily ex-service personnel but also their families and welfare staff about the mental health needs of young military personnel
Parthenocissus quinquefolia (L.) Planch.
https://thekeep.eiu.edu/herbarium_specimens_byname/19476/thumbnail.jp
Dijet Mass Resolution at the LHC
At the LHC the resolution of dijet mass is compromised by the pile up of
energy from overlapping minimum bias events. Using anxillary measurements of
the jet mass and the energy in distant cones, the resolution can be improved,
as illustrated by a study of Z' of 120 GeV mass with the LHC operating at
design luminosity.Comment: 11 pages, 8 figure
LHC Detector Upgrades
The LHC detectors are well into their construction phase. The LHC schedule
shows first beam to ATLAS and CMS in 2007. Because the LHC accelerator has
begun to plan for a ten fold increase in LHC design luminosity (the SLHC or
super LHC) it is none too soon to begin to think about the upgrades which will
be required of the present LHC detectors. In particular, the tracking systems
of ATLAS and CMS will need to be completely rebuilt. Given the time needed to
do the R&D, make prototypes, and construct the new detectors and given the
accelerator schedule for the SLHC, work needs to begin rather soon.Comment: 14 pages, 11 figure
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