Top-pions and single top production at HERA and THERA
نویسندگان
چکیده
منابع مشابه
Single W and Anomalous Single Top Production at HERA
The search for events containing isolated leptons (electrons or muons) and missing transverse momentum produced in ep collisions is performed individually and in a common phase space with the H1 and ZEUS detectors at HERA in the period 1994–2007. The presented H1+ZEUS data sample corresponds to an integrated luminosity of 0.97 fb, and comprises the complete high energy data from the HERA progra...
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In the context of top-color assisted technicolor (TC2) models, we calculate the contributions of the neutral top-pion π t to tγ and tz production via the processes ep → γc → tγ and ep → γc → tz at the HERA and THERA colliders. Our results show that the cross sections σtγ(s) and σtz(s) are very small at the HERA collider with √ s = 320GeV . However, in most of the parameter space, σtγ(s) and σtz...
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In the context of topcolor assisted technicolor(TC2) models, we study the production of the top-pions π t with single top quark via the processes pp̄ → tπ0 t+X and pp̄ → tπ t + X, and discuss the possibility of detecting these new particles at Tevatron and LHC. We find that it is very difficult to observe the signals of these particles via these processes at Tevatron, while the neutral and charge...
متن کاملQCD corrections to FCNC single top production at HERA
We calculate first-order QCD corrections to the cross section for single top quark production mediated by flavor changing neutral currents (FCNC) in ep collisions at the HERA collider. We find that the uncertainty due to the choice of the QCD scale is significantly reduced. This study is motivated by the current experimental work for limits on the FCNC single top cross section. On leave of abse...
متن کاملSearch for Single Top Production in ep Collisions at HERA ∗
In this talk a search for the single production of top quarks performed at the H1 experiment is presented. No evidence for anomalous top production via FCNC processes is found and limits on the anomalous magnetic coupling constant κtuγ are given.
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2005
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2004.11.053