Search for W' --> tb in pp Collisions at
dc.contributor.author | Cully, J. Clark | en_US |
dc.date.accessioned | 2009-05-15T15:17:39Z | |
dc.date.available | NO_RESTRICTION | en_US |
dc.date.available | 2009-05-15T15:17:39Z | |
dc.date.issued | 2009 | en_US |
dc.date.submitted | en_US | |
dc.identifier.uri | https://hdl.handle.net/2027.42/62333 | |
dc.description.abstract | We present a search for a narrow resonance in the tbbar mass spectrum using 1.9 fb−1 of ppbar collisions at sqrt(s) = 1.96 TeV recorded with the CDF II detector at the Fermilab Tevatron. We select events with a lepton, neutrino candidate, and two or three jets from which to construct the tbbar mass. We quantify the result using the model of a massive Standard Model-like charged-boson (W') decaying to tbbar, but we are generally sensitive to the presence of any narrow state decaying to the third generation. For a purely right-handed W' with Standard Model couplings, we set a new limit at 95% confidence of sigma(ppbar -> W') x BR(W' -> tbbar) < 0.28 pb and M_W' > 800 GeV/c2. The limit increases to M_W' > 825 GeV/c2 if decay to right-handed neutrinos is forbidden. For a right-handed W' (or left-handed W' with negligible interference) with arbitrary coupling strength, we set limits on that coupling as a function of W' mass between 300 to 950 GeV/c^2. | en_US |
dc.format.extent | 2468339 bytes | |
dc.format.extent | 1373 bytes | |
dc.format.mimetype | application/octet-stream | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | en_US |
dc.subject | Particle Physics | en_US |
dc.title | Search for W' --> tb in pp Collisions at | en_US |
dc.type | Thesis | en_US |
dc.description.thesisdegreename | PhD | en_US |
dc.description.thesisdegreediscipline | Physics | en_US |
dc.description.thesisdegreegrantor | University of Michigan, Horace H. Rackham School of Graduate Studies | en_US |
dc.contributor.committeemember | Amidei, Dante Eric | en_US |
dc.contributor.committeemember | Adams, Robert James | en_US |
dc.contributor.committeemember | Gerdes, David W. | en_US |
dc.contributor.committeemember | Riles, Keith | en_US |
dc.contributor.committeemember | Wells, James Daniel | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/62333/1/ccully_1.pdf | |
dc.owningcollname | Dissertations and Theses (Ph.D. and Master's) |
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