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in subjects: "Top Particles"

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Prospects for physics at e/sup +/e/sup -/ linear colliders

The present thinking on high-energy e/sup /plus//e/sup /minus// linear colliders is reviewed, stressing those points that have consequences for detector design and physics analyses. Detector requirements are discussed. Experimental aspects of the physics that can be done at these colliders are discussed: first the general physics environment, then a standard process, W/sup /plus// W/sup /minus// detection, and finally four examples of the discovery potential of these colliders /emdash/ heavy qu… more

Date: March 1, 1988

Creator: Feldman, G. J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Prospects of physics at CDF with the SVX

During next physics run CDF will strongly enhance its heavy flavor tagging capabilities with the installation of a silicon vertex detector (SVX), that will allow precise measurements of secondary decay vertices in the plane transverse to the beam (impact parameter resolution {approx equal} 12 {mu}m). We expect this detector to have a significant impact on b-physics (c{tau}{sub B} {approx equal} 350 {mu}m) and top search. In the following we will discuss CDF prospects for top search and for CP v… more

Date: September 1, 1991

Creator: Dell'Agnello, S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Hadron-hadron physics at high energy and luminosity

I review some recent theoretical issues relevant to the physics of hadron-hadron collisions. I discuss processes where either energy or luminosity is the most important feature and emphasize the need for experiments at luminosities of 10{sup 33}cm{sup -2}sec{sup 1} if the full range of physics options is to be thoroughly explored. 22 refs., 10 figs.

Date: November 8, 1989

Creator: Hinchliffe, I.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Production and decay of heavy top quarks

Experimental evidence indicates that the top quark exists and has a mass between 50 and 200 GeV/c{sup 2}. The decays of a top quark with a mass in this range are studied with emphasis placed on the mass region near the threshold for production of real W bosons. Topics discussed are: (1) possible enhancement of strange quark production when M{sub W} + m{sub s} < m{sub t} < M{sub W} + m{sub b}; (2) exclusive decays of T mesons to B and B{asterisk} mesons using the non-relativistic quark model; (3… more

Date: August 1, 1989

Creator: Kauffman, R.P.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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T,b, and new particle searches at p p colliders

Experiments at the p{bar p} colliders at CERN and FNAL have an active program of heavy flavor physics. Recently, CDF at FNAL and UA1 at CERN have measured rare decays of the {Beta}{sup 0} {minus} {bar {Beta}}{sup 0} mixing. CDF has signals for {Beta}{sup {plus minus}} {yields} J/{psi}K{sup {plus minus}} and {Beta}{sup 0} {yields} J/{psi}K{sup *0}. Both CDF and UA1 have set limits on the branching ratio of {Beta}{sup 0} {yields} {mu}{sup +}{mu}{sup {minus}} and have measured {Beta}{sup 0} {minus… more

Date: August 1, 1991

Creator: Crane, D.A.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Prospects for top at CDF

During the next two years, the Fermilab Tavatron is expected to deliver approximately 100pb{sup {minus}1} of integrated luminosity. We describe improvements to the CDF detector since the 1988--89 collider run and discuss the prospects for the discovery of the top quark during the 1992--93 collider runs.

Date: June 3, 1992

Creator: Gerdes, D. (Chicago Univ., IL (United States))

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Top quark and light Higgs scalar mass bounds in no-scale supergravity

No-scale supergravity theories with the minimal low-energy particle content are shown to become untenable for a top quark mass m/sub T/ much less than 40 GeV. For m/sub T/ < 55 GeV, a stringent upper bound operates on the mass of the lowest-lying Higgs scalar. Further, the Higgs pseudoscalar is constrained to be nearly a quarter as massive as the gluino.

Date: August 29, 1986

Creator: Roy, P.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Heavy flavor physics at hadron colliders

The search for the top quark has dominated heavy flavor physics at hadron colliders. For Standard model decay of top the present mass limit in m{sub t} > 89 GeV (95% C.L.). Bottom production cross sections are quite large at hadron colliders, thus providing enough statistics for extensive studies. Results on cross sections, B{sup 0} {minus} {bar B}{sup 0} mixing, exclusive channels and rare B decays will be summarized.

Date: December 1, 1991

Creator: Barbaro-Galtieri, A.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Physics issues for the next linear collider

This article surveys the physics issues to be studied at future e{sup +}e{sup {minus}} colliders, especially in the energy region below 500 GeV. Particular emphasis is given to standard model studies -- precision measurements of the dynamical properties of W bosons and top quarks -- as well as the search for evidence of the Higgs sector.

Date: April 1, 1992

Creator: Peskin, M.E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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W mass and W asymmetry at CDF

The lepton charge asymmetry from W decaying into a lepton and a neutrino is discussed (preliminary result). This measurement gives information on parton distribution functions at low x values. The derivation of the recently published W mass value of 79.91 {plus minus} 0.39 GeV/c{sup 2} is also presented. M{sub W} is used to set an upper limit on the top quark mass. 13 refs., 4 figs., 1 tab.

Date: May 1, 1991

Creator: Leone, S. (Pisa Univ. (Italy) Istituto Nazionale di Fisica Nucleare, Pisa (Italy))

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Remarks on Pseudoscalar Higgs Particles

It is suggested that Z decays into three pseudoscalar Higgs particles can be a useful process in search for Higgs particles beyond the standard model. 4 refs., 1 fig.

Date: January 1, 1991

Creator: Li, Ling-Fong

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Top physics at CDF

We present here preliminary results of an extension of our already published search for the top quark. The search is based on a data sample collected during the 1988--1989 run of the Fermilab Tevatron Collider corresponding to an integrated luminosity of 4.4 pb {sup {minus}1}. We find no evidence for top quark production and we establish preliminary limits on the t-tbar production cross section as a function of the top mass (M{sub top}) in p-pbar collisions at {radical}s = 1.8 TeV. Using theore… more

Date: June 1, 1991

Creator: Campagnari, C.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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New particle searches at CDF

We present results from searches for the top quark, supersymmetric particles, and new gauge bosons at the Collider Detector at Fermilab (CDF). 8 refs., 6 figs.

Date: January 1, 1991

Creator: Kuhlmann, S.E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Probing the flavor changing vertex of the top-quark

The implications of the flavor changing neutral current vertex, t {yields} cX, where X = {gamma},g, Z, or H is examined in the Standard and two-Higgs-doublet models. 9 refs., 3 figs.

Date: August 1, 1991

Creator: Eilam, G. (Technion-Israel Inst. of Tech., Haifa (Israel). Dept. of Physics); Hewett, J.L. (Argonne National Lab., IL (United States). High Energy Physics Div.) & Soni, A. (Brookhaven National Lab., Upton, NY (United States))

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

CDF: Recent results and future prospects

We present recent results from the Collider Detector at Fermilab. Searches for the top quark have established a lower bound of M{sub top} > 91 GeV/c{sup 2} (at 95% confidence level). A measurement of B{sup o}{bar B}{sup o} mixing has been obtained from b{bar b} {yields} e{mu}, ee events. Measurements of b-quark production have been obtained from e + X events and J/{psi} + K events. The mass of the W boson has been determined to be M{sub W} = 79.91 {plus minus} 0.39 GeV/c{sup 2}. In searching fo… more

Date: March 3, 1992

Creator: Yeh, G.P.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Recent results from the CDF (Collider Detector at Fermilab) experiment at the Tevatron proton-antiproton collider

Recent results from the CDF experiment are described. The Standard Model gives a good description of jet production, and W/Z production and decay. There is no evidence yet for the top quark, for fourth generation quarks, or for deviations from the Standard Model ascribable to quark substructure, supersymmetric particles, or heavy additional W-like or Z-like bosons. Limits are given where applicable. A search for a light Higgs Boson is also described. 11 refs., 24 figs.

Date: September 1, 1989

Creator: Geer, S. (Harvard Univ., Cambridge, MA (USA). High Energy Physics Lab.)

Item Type: Article

Partner: UNT Libraries Government Documents Department

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The theory of heavy flavour production

The theory of heavy quark production in hadronic reactions is reviewed. Rates for the production of charm, bottom and top quarks at energies of current interest are presented. 34 refs., 19 figs., 2 tabs.

Date: August 9, 1989

Creator: Ellis, R.K.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Results from p p colliders

Recent results {bar p}p colliders are presented. From elastic scattering experiments at the Tevatron, an average value of {sigma}{sub tot} = 72.1{plus minus}2 mb is reported, along with a new measurement of {rho} = 0.13 {plus minus} 0.7. New measurements of jet direct photon and high p{sub t} W and Z production are compared to more precise, higher order predictions from perturbative QCD. Recently available data on the W mass and width give combined values for M{sub W} = 80.14{plus minus}0.27 Ge… more

Date: August 1, 1991

Creator: Huth, J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Particle production through two-photon processes in relativistic heavy-ion colliders

Particle production via two-photon processes in relativistic heavy-ion colliders is discussed. We consider the coherent production, including its impact parameter dependence, and incoherent production. Particular attention is given to Higgs boson production in the energy regime of the LHC and the SSC. 15 refs., 7 figs., 1 tab.

Date: January 1, 1991

Creator: Wu, J.-S.; Bottcher, C.; Strayer, M.R. (Oak Ridge National Lab., TN (United States)) & Shakin, C.M. (Brooklyn Coll., NY (United States))

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Gauge bosons and heavy quarks: Proceedings of Summer Institute on Particle Physics

This report contains papers on the following topics: Z decays and tests of the standard model; future possibilities for LEP; studies of the interactions of electroweak gauge bosons; top quark topics; the next linear collider; electroweak processes in hadron colliders; theoretical topics in B-physics; experimental aspects of B-physics; B-factory storage ring design; rare kaon decays; CP violation in K{sup 0} decays at CERN; recent K{sup 0} decay results from Fermilab E-731; results from LEP on h… more

Date: January 1, 1991

Creator: Hawthorne, J.F. (ed.)

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Phenomenology of heavy quark production

A review is presented of heavy quark production in {bar p}p, {pi}{sup -}p, and pp interactions at fixed target and collider energies. Calculations of total cross sections and of single quark inclusive differential cross sections d{sup 2}{omega}/dk{sub T}dy are described including contributions through next-to-leading order in QCD perturbation theory. Comparisons with available data on charm and bottom quark production show good agreement for reasonable values of the charm and bottom quark masse… more

Date: January 1, 1989

Creator: Berger, E. L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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The search for top at CDF

We present results on the search for the top quark in {bar p}p collisions at {radical}s = 1.8 TeV. The data sample collected during the 1988--89 run with the Collider Detector at Fermilab (CDF) includes more than 4 pb{sup {minus}1}. We report here on an extension of previously published searches for the top quark in electron + jets and the dilepton channel electron-muon. The 95% confidence level limit on the top mass is 89 GeV/c{sup 2}.

Date: August 1, 1991

Creator: Liss, T.M. (Illinois Univ., Urbana, IL (United States). Loomis Lab. of Physics)

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Top Mass and Properties

No Description Available.

Date: May 1, 2008

Creator: Chen, Yen-Chu & /Taiwan, Inst. Phys.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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New particle searches at p p experiments

The search for new particles, such as the top quark, charged Higgs boson, heavy gauge bosons and supersymmetric particles, at the CERN and Fermilab proton-antiproton colliders is reviewed. A preliminary result by the CDF experiment of a reconstructed B meson mass peak from the decays B{sup {plus minus}} {yields} J/{psi}K{sup {plus minus}} and B{sup 0} {yields} J/{psi}K*{sup 0} is also presented. 22 refs., 13 figs.

Date: November 26, 1990

Creator: Sharha, J. (Johns Hopkins Univ., Baltimore, MD (USA). Dept. of Physics and Astronomy)

Item Type: Article

Partner: UNT Libraries Government Documents Department