scholarly journals Search for new physics via single-top production at the LHC

2007 ◽  
Vol 658 (1-3) ◽  
pp. 50-56 ◽  
Author(s):  
Qing-Hong Cao ◽  
Jose Wudka ◽  
C.-P. Yuan
Keyword(s):  
New Physics ◽  
Single Top

scholarly journals Soft-gluon corrections in top-quark production

2018 ◽  
Vol 33 (25) ◽  
pp. 1830021 ◽  
Author(s):  
Nikolaos Kidonakis
Keyword(s):  
Cross Sections ◽  
Top Quark ◽  
Z Bosons ◽  
New Physics ◽  
Higgs Bosons ◽  
Soft Gluon ◽  
Total Cross Sections ◽  
Single Top ◽  
Top Quark Production ◽  
Quark Production

I review calculations of soft-gluon corrections for top-quark production in hadron collisions. I describe theoretical formalisms for their resummation and for finite-order expansions. I show that soft-gluon corrections are dominant for a large number of top-quark processes. I discuss top–antitop pair production as well as single-top production, including total cross sections and differential distributions, and compare with data from the LHC and the Tevatron. I also discuss top-quark production in association with charged Higgs bosons, Z bosons and other particles in models of new physics.

scholarly journals Bounds on the Electromagnetic Dipole Moments through the Single Top Production at the CLIC

2017 ◽  
Vol 2017 ◽  
pp. 1-14 ◽  
Author(s):  
M. Köksal ◽  
A. A. Billur ◽  
A. Gutiérrez-Rodríguez
Keyword(s):  
Top Quark ◽  
Dipole Moments ◽  
Center Of Mass ◽  
High Energy ◽  
New Physics ◽  
Center Of Mass Energy ◽  
Systematic Uncertainties ◽  
Single Top ◽  
Top Quark Production ◽  
Quark Production

We obtain bounds on the anomalous magnetic and electric dipole moments of thet-quark from a future high-energy and high-luminosity linear electron positron collider, as the CLIC, with polarized and unpolarized electron beams which are powerful tools for determining new physics. We consider the processesγe-→t¯bνe(γis the Compton backscattering photon) ande+e-→e-γ⁎e+→t¯bνee+(γ⁎is the Weizsacker-Williams photon) as they are one of the most important sources of single top quark production. For systematic uncertainties ofδsys=0%  (5%),b-tagging  efficiency=0.8, center-of-mass energy ofs=3 TeV, and integrated luminosity ofL=2ab-1the futuree+e-collider may put bounds on the electromagnetic dipole momentsa^Vanda^Aof the top quark of the order ofO(10-2–10-1)at the2σ  (3σ)level, which are competitive with those recently reported in previous studies at hadron colliders and the ILC.

scholarly journals ISOLATED LEPTONS IN EVENTS WITH LARGE MISSING TRANSVERSE MOMENTUM AND THE SEARCH FOR SINGLE TOP PRODUCTION AT HERA

2006 ◽  
Vol 21 (25) ◽  
pp. 1901-1916 ◽  
Author(s):  
J. FERRANDO
Keyword(s):  
Transverse Momentum ◽  
Standard Model ◽  
New Physics ◽  
Beyond The Standard Model ◽  
High Transverse Momentum ◽  
Flavour Changing Neutral Currents ◽  
Proton Collisions ◽  
Missing Transverse Momentum ◽  
Single Top ◽  
The Standard Model

Recent results in searches for high transverse momentum leptons in events with large missing transverse momentum in electron–proton collisions at HERA are reviewed. These searches have implications for searches for physics beyond the Standard Model. The most recent results on searches for single top production via Flavour Changing Neutral Currents are reviewed. The consistency of results from the H1 and ZEUS collaborations and prospects of discovering new physics during the final year of HERA running are discussed.

scholarly journals Single top polarisation as a window to new physics

2017 ◽  
Vol 769 ◽  
pp. 498-502 ◽  
Author(s):  
J.A. Aguilar-Saavedra ◽  
C. Degrande ◽  
S. Khatibi
Keyword(s):  
New Physics ◽  
Single Top

scholarly journals TOP QUARK PHYSICS

2008 ◽  
Vol 23 (27n28) ◽  
pp. 4421-4433 ◽  
Author(s):  
◽  
ERICH W. VARNES
Keyword(s):  
Top Quark ◽  
Production Cross ◽  
New Physics ◽  
Recent Measurement ◽  
Top Quark Mass ◽  
Text Production ◽  
Single Top ◽  
The Standard Model ◽  
Top Quark Production ◽  
Quark Production

A review is presented of the current experimental status of the top quark sector of the Standard Model. The measurements summarized include searches for electroweak single top production, the latest results on the [Formula: see text] production cross-section, and searches for new physics in top quark production and decay. In addition, the recent measurement of the top quark mass to a precision of 0.7% is highlighted.

scholarly journals New physics with boosted single top production at the LHC and future colliders

2020 ◽  
Vol 80 (1) ◽  
Author(s):  
J. A. Aguilar–Saavedra ◽  
M. L. Mangano
Keyword(s):  
Standard Model ◽  
Mass Range ◽  
High Energy ◽  
New Physics ◽  
Final States ◽  
Hadron Colliders ◽  
High Luminosity ◽  
Anomalous Couplings ◽  
Weakly Coupled ◽  
Single Top

AbstractWe address the potential of measurements with boosted single-top final states at the high-luminosity LHC (HL-LHC) and possible future hadron colliders: the high-energy LHC (HE-LHC), and the future circular collider (FCC). As new physics examples to assess the potential, we consider the search for tbW anomalous couplings and for a weakly-coupled $$W'$$W′ boson. The FCC would improve by a factor of two the sensitivity to anomalous couplings of the HL-LHC. For $$W'$$W′ bosons, the FCC is sensitive to $$W'$$W′ couplings 2–5 times smaller than the HL-LHC in the mass range 2–4 TeV, and to masses up to 30 TeV in the case of Standard Model-like couplings.

scholarly journals Constraining new physics with single top production at LHC

2020 ◽  
Vol 2020 (8) ◽  
Author(s):  
Daniel Stolarski ◽  
Alberto Tonero
Keyword(s):  
New Physics ◽  
Single Top

Top Physics at ATLAS

2005 ◽  
Vol 20 (15) ◽  
pp. 3397-3399 ◽  
Author(s):  
GEORGIOS STAVROPOULOS
Keyword(s):  
Matrix Element ◽  
Rare Decays ◽  
Top Quark ◽  
Top Physics ◽  
Branching Ratios ◽  
New Physics ◽  
Ckm Matrix ◽  
Single Top

The large number of [Formula: see text] events that will be produced at LHC, will allow very precise measurements of the properties of the top quark, which may also reveal New Physics. The mass of the top quark will be measured with a precision of about one GeV. Rare decays of the top quark can be probed for branching ratios as small as 10-4. Finally, the detailed study of three different mechanisms of electroweak single top production will allow precise measurements of the CKM matrix element Vtb.

scholarly journals Single Top as Window on Heavy Quarks and Other New Physics

2013 ◽  
Vol 2013 ◽  
pp. 1-8
Author(s):  
Andrea Giammanco
Keyword(s):  
Top Quarks ◽  
New Physics ◽  
Heavy Quarks ◽  
Single Top ◽  
First Time

This paper discusses what the study of the electroweak production of single top quarks can tell us about additional quark generations, and how to distinguish the new quarks hypothesis from other kinds of new physics. We also suggest some new studies that become possible for the first time thanks to the large statistics of single top quarks produced at the LHC.

Sign in / Sign up

Export Citation Format

Share Document