Search For A Heavy Bottom Like Quark In Pp Collisions At Sqrts
Download Search For A Heavy Bottom Like Quark In Pp Collisions At Sqrts full books in PDF, epub, and Kindle. Read online free Search For A Heavy Bottom Like Quark In Pp Collisions At Sqrts ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2011 |
Genre | : |
ISBN | : |
Download Search for a Heavy Bottom-like Quark in Pp Collisions at Sqrt(s) Book in PDF, Epub and Kindle
A search for pair-produced bottom-like quarks in pp collisions at sqrt(s) = 7 TeV is conducted with the CMS experiment at the LHC. The decay b' to tW is considered in this search. The b' b'-bar to tW-̂ t-bar W+̂ process can be identified by the distinctive signature of trileptons and same-sign dileptons. With a data sample corresponding to an integrated luminosity of 34 inverse picobarns, no excess above the standard model background predictions is observed and a b' quark with a mass between 255 and 361 GeV/c2̂ is excluded at the 95% confidence level.
Author | : |
Publisher | : |
Total Pages | : 23 |
Release | : 2014 |
Genre | : |
ISBN | : |
Download Inclusive Search for a Vector-like T Quark with Charge $\frac{2}{3}$ in Pp Collisions at $\sqrt{s}$ Book in PDF, Epub and Kindle
A search is performed for a massive new vector-like quark T, with charge 2/3, that is pair produced together with its antiparticle in proton-proton collisions. The data were collected by the CMS experiment at the Large Hadron Collider in 2012 at sqrt(s) = 8 TeV and correspond to an integrated luminosity of 19.5 inverse femtobarns. The T quark is assumed to decay into three different final states, bW, tZ, and tH. The search is carried out using events with at least one isolated lepton. No deviations from standard model expectations are observed, and lower limits are set on the T quark mass at 95% confidence level. The lower limit lies between 687 and 782 GeV for all possible values of the branching fractions into the three different final states assuming strong production. These limits are the most stringent constraints to date on the existence of such a quark.
Author | : David J. Cox |
Publisher | : |
Total Pages | : |
Release | : 2012 |
Genre | : |
ISBN | : 9781267967893 |
Download Search for a Heavy Top-like Quark in Pp̄ Collisions at [square Root] S Book in PDF, Epub and Kindle
We present the results of a search for pair production of a heavy top-like (t') quark decaying to Wq final states using data corresponding to an integrated luminosity of 5.6 fb−1 collected by the CDF II detector in proton-antiproton collisions at [square root s] = 1.96 TeV center of mass energy. A searche for t' --> Wb in events containing a lepton and four or more jets is conducted. By performing a fit to the two-dimensional distribution of total transverse energy versus reconstructed t' quark mass, we set upper limits on the t't̄' pair production cross section and exclude a standard model fourth-generation t' quark decaying to Wb with mass below 358 GeV/c2 at 95% CL.
Author | : Shota Tsiskaridze |
Publisher | : Springer |
Total Pages | : 248 |
Release | : 2017-08-02 |
Genre | : Science |
ISBN | : 3319634143 |
Download Search for Flavor-Changing Neutral Current Top Quark Decays t → Hq, with H → bb̅ , in pp Collisions at √s = 8 TeV with the ATLAS Detector Book in PDF, Epub and Kindle
This PhD thesis focuses on the search for flavor-changing neutral currents in the decay of a top quark to an up-type quark (q = u, c) and the Standard Model Higgs boson, where the Higgs boson decays to bb. Further, the thesis presents the combination of this search for top quark pair events with other ATLAS searches – in the course of which the most restrictive bounds to date on tqH interactions were obtained. Following on from the discovery of the Higgs boson, it is particularly important to measure the Yukawa couplings of the Standard Model fermions; these parameters may provide crucial insights to help solve the flavor puzzle and may help reveal the presence of new physics before it is directly observed in experiments.
Author | : Patrick L.S. Connor |
Publisher | : Springer Nature |
Total Pages | : 325 |
Release | : 2019-11-29 |
Genre | : Science |
ISBN | : 3030343839 |
Download Inclusive b Jet Production in Proton-Proton Collisions Book in PDF, Epub and Kindle
^ 74 GeV and |y| 2.4; the b jets must contain a B hadron. The measurement has significant statistics up to p T ∼ O(TeV). Advanced methods of unfolding are performed to extract the signal. It is found that fixed-order calculations with underlying event describe the measurement well.
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2011 |
Genre | : |
ISBN | : |
Download Search for a Vectorlike Quark with Charge 2/3 in T+Z Events from Pp Collisions at Sqrt[s] Book in PDF, Epub and Kindle
A search for pair-produced heavy vector-like charge-2/3 quarks, T, in pp collisions at a center-of-mass energy of 7 TeV, is performed with the CMS detector at the LHC. Events consistent with the flavor-changing-neutral-current decay of a T quark to a top quark and a Z boson are selected by requiring two leptons from the Z-boson decay, as well as an additional isolated charged lepton. In a data sample corresponding to an integrated luminosity of 1.14 inverse femtobarns, the number of observed events is found to be consistent with the standard model background prediction. Assuming a branching fraction of 100% for the decay T to tZ, a T quark with a mass less than 475 GeV/c2̂ is excluded at the 95% confidence level.
Author | : Wang Wei |
Publisher | : World Scientific |
Total Pages | : 576 |
Release | : 2020-02-27 |
Genre | : Science |
ISBN | : 9811207410 |
Download Lepton Photon Interactions At High Energies (Lepton Photon 2017) - Proceedings Of The 28th International Symposium Book in PDF, Epub and Kindle
The latest of the 'Lepton Photon' symposium, one of the well-established series of meetings in the high-energy physics community, was successfully organized at the South Campus of Sun Yat-sen University, Guangzhou, China, from August 7-12, 2017, where physicists around the world gathered to discuss the latest advancements in the research field.This proceedings volume of the Lepton Photon 2017 collects contributions by the plenary session speakers and the posters' presenters, which cover the latest results in particle physics, nuclear physics, astrophysics, cosmology, and plans for future facilities.
Author | : Michail Bachtis |
Publisher | : Springer Science & Business Media |
Total Pages | : 161 |
Release | : 2013-12-13 |
Genre | : Science |
ISBN | : 3319032577 |
Download Heavy Neutral Particle Decays to Tau Pairs Book in PDF, Epub and Kindle
The work presented in this thesis spans a wide range of experimental particle physics subjects, starting from level-1 trigger electronics to the final results of the search for Higgs boson decay and to tau lepton pairs. The thesis describes an innovative reconstruction algorithm for tau decays and details how it was instrumental in providing a measurement of Z decay to tau lepton pairs. The reliability of the analysis is fully established by this measurement before the Higgs boson decay to tau lepton pairs is considered. The work described here continues to serve as a model for analysing CMS Higgs to tau leptons measurements.
Author | : Christopher Matthew Holck |
Publisher | : |
Total Pages | : 207 |
Release | : 1999 |
Genre | : |
ISBN | : |
Download Search for Scalar Top Quark and Scalar Bottom Quark in Pp̄ Collisions at [square Root]S Book in PDF, Epub and Kindle
Author | : Marco Montella |
Publisher | : |
Total Pages | : |
Release | : 2021 |
Genre | : |
ISBN | : |
Download Search for Single Production of a Vector-like Partner of the Bottom Quark in the BH(bb) Final State in Pp Collisions at √s Book in PDF, Epub and Kindle