A measurement of charmed particle lifetime in experiment NA1 at the CERN SPS

Carter, Jeremy

(1988)

Carter, Jeremy (1988) A measurement of charmed particle lifetime in experiment NA1 at the CERN SPS.

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Abstract

An analysis of data collected In the NA1 high energy photoproduction experiment at the CERN SPS is presented. The theoretical status of charmed particle decay is reviewed. The NA1 experimental apparatus is discussed. Experiment NA1 used an active semiconductor target exposed to a 70-225 GeV tagged photon beam and the forward spectrometer FRAMM to collect data on the decay of particles carrying the charm quantum number. FRAMM was equipped with three lever arms for charged particle momentum analysis, electromagnetic calorimeters for neutral particle reconstruction and Cerenkov detectors for charged particle identification. The active target measured the charged particle multiplicity development along the beam axis to determine the decay length of particles. The proper time resolution of the target was -0.2x10-13s. A sample of sixty-three Ac charmed baryons are isolated in the decay channel via an inclusive analysis. Twenty-four of these Acs havedecay lengths resolved in the NA1 active target which can be matched to the information in the forward spectrometer FRAMM. A study of the sixty-three reconstructed in FRAMM indicates that a large proportion decayed via the channel, a decay which is believed to proceed exclusively through W exchange.

Information about this Version

This is a Accepted version
This version's date is: 1988
This item is not peer reviewed

Link to this Version

https://repository.royalholloway.ac.uk/items/697f1280-d01f-4bb4-aa54-6668138f54b8/1/

Item TypeThesis (Doctoral)
TitleA measurement of charmed particle lifetime in experiment NA1 at the CERN SPS
AuthorsCarter, Jeremy
Uncontrolled KeywordsHigh Energy Physics; Pure Sciences; A; Cern; Charmed; Experiment; Lifetime; Measurement; Na1; Particle; Photoproduction; Photoproduction; Sps
DepartmentsDepartment of Physics

Identifiers

ISBN978-1-339-59496-5

Deposited by () on 31-Jan-2017 in Royal Holloway Research Online.Last modified on 31-Jan-2017

Notes

Digitised in partnership with ProQuest, 2015-2016. Institution: University of London, Royal Holloway and Bedford New College (United Kingdom).


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