Unparticle physics in single top signals

Alan, A. T.; Pak, Namık K.; Şenol, A.

doi:10.1209/0295-5075/83/21001

Cited by 8 publications

(6 citation statements)

References 20 publications

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“…These processes have been inves-tigated for different types of colliders, namely, lepton-hadron, and linear e + e − colliders, as well as LHC in ref. [13]. This study reveals, as we have expected, that there could be observable effects of unparticles, with rather striking signals for certain values of d U , which may provide further insight on unparticle physics.…”

Section: Numerical Analysis Discussion and Conclusionsupporting

confidence: 76%

Unparticle physics in top pair signals at the LHC and ILC

Alan

Pak

2008

Europhys. Lett.

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We study the effects of unparticle physics in the pair productions of top quarks at the LHC and ILC. By considering vector, tensor and scalar unparticle operators, as appropriate, we compute the total cross sections for pair production processes depending on scale dimension d U . We find that the existence of unparticles would lead to measurable enhancements on the SM predictions at the LHC. In the case of ILC this may become two orders of magnitude larger than that of SM, for smaller values of d U , a very striking signal for unparticles.

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Section: Numerical Analysis Discussion and Conclusionsupporting

confidence: 76%

Unparticle physics in top pair signals at the LHC and ILC

Alan

Pak

2008

Europhys. Lett.

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“…(a) (b) In the context of unparticle physics, SM fields can interact with scalar, vector and tensor unparticles. The differential cross-sections of single top production by considering these three types of the unparticles have been presented in [33]. Contributions of unparticle physics to the cross section σ(pp → t + jet) at the LHC are shown in Another beyond SM theory which we are going to consider is topflavor model [10,11].…”

Section: Numerical Resultsmentioning

confidence: 99%

The impact of the Kaluza–Klein excitedWboson on the single top at the LHC and comparison with other models

Ayazi¹,

Najafabadi²

2011

J. Phys. G: Nucl. Part. Phys.

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We study the s-channel single top quark production at the LHC in the context of extra dimension theories, including the Kaluza-Klein (KK) decomposition. It is shown that the presence of the first KK excitation of W gauge boson can reduce the total cross section of s-channel single top production considerably if M W KK ∼ 2.2 TeV (3.5 TeV) for 7 TeV (14 TeV) in proton-proton collisions. Then the results will be compared with the impacts of other beyond Standard Model (SM) theories on the cross section of single top s-channel. The possibility of distinguishing different models via their effects on the production cross section of the s-channel is discussed.

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“…The effects of unparticle on top properties at hadron colliders have been intensively studied in the literatures [26], [27], [28], [29], [30], [31], [32], [33]. Also, there are some papers in which the top A FB at the Tevatron has been studied.…”

Section: Influence Of Unparticle On Top Pair Productionmentioning

confidence: 99%

Top quark asymmetries and unparticle physics at the Tevatron and LHC

Khatibi¹,

Najafabadi²

2013

Phys. Rev. D

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Among different measured observables of top-antitop quark pairs at hadron colliders, the forwardbackward asymmetry (A FB ) measured by the CDF and D0 collaborations has inconsistency with the Standard Model prediction. The measured forward-backward asymmetry grows with tt invariant mass. Several new physics models have been proposed to explain this deviation. We consider the consistency of the parameter space of vector unparticle (in Flavor-Conserving scenario) with the existing tt production measurements. In particular, we look at the total cross sections at the LHC and Tevatron, differential cross section with tt invariant mass, and the LHC charge asymmetry to identify the regions in parameter space that can give the desired top A FB observed by the Tevatron. We show that in spite of the intrinsic tension between the LHC charge asymmetry and A FB , there exists a region in the unparticle parameters space where the top A FB and the LHC charge asymmetry are satisfied simultaneously. Finally, we show that the consistent region with tt observables is consistent with the constraints coming from the dijet resonance searches.

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Unparticle physics in single top signals

Cited by 8 publications

References 20 publications

Unparticle physics in top pair signals at the LHC and ILC

Unparticle physics in top pair signals at the LHC and ILC

The impact of the Kaluza–Klein excitedWboson on the single top at the LHC and comparison with other models

Top quark asymmetries and unparticle physics at the Tevatron and LHC

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