Search for Anomalous $WW\gamma $ and $WWZ$ Couplings with Polarized $e$-Beam at the LHeC

Cakir, I. Türk; Çakır, O.; Şenol, A.; Tasci, A. T.

doi:10.5506/aphyspolb.45.1947

Cited by 23 publications

(16 citation statements)

References 4 publications

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“…There are a lot of phenomenological studies for W W γ interactions at the linear and hadron colliders [4][5][6][7][8][9][10][11]. The experimental sensitivity limits on anomalous W W γ couplings ∆κ = κ − 1 and λ are obtained by the LEP [12], Tevatron [13] and LHC [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Anomalous WWγ couplings with beam polarization at the Compact Linear Collider

et al. 2016

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We study the anomalous W W γ couplings at the Compact Linear Collider through the processes e + e is the Weizsacker-Williams photon). We give the 95% confidence level limits for unpolarized and polarized electron (positron) beam on the anomalous couplings for various values of the integrated luminosities and center-of-mass energies. We show that the obtained limits on the anomalous couplings through these processes can highly improve the current experimental limits. In addition, our limits with beam polarization are approximately two times better than the unpolarized case.Hereκ, λ are the dimensionless anomalous parameters. They are related to magnetic dipole and electric quadrupole moments of W boson. In the SM, the couplings are obtained g γ 1 = 1, κ = 1 and λ = 0 at the tree level. The g γ 1 = 1 value is fixed for on-shell photons at tree level by electromagnetic gauge invariance to its SM value. Then, the Feynman rule for the anomalous vertex can be found from Eq.(1),

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Section: Introductionmentioning

confidence: 99%

Anomalous WWγ couplings with beam polarization at the Compact Linear Collider

et al. 2016

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“…The correct polarization not only enhances the right-handed signal but also distinguishes it from any competing scenarios of neutrino mass generation models, which is difficult at the LHC. There could also be other possible new physics studies, using the polarized electron beam option at LHeC [29]. We must however acknowledge the fact that the LR signal might not show once the right handed neutrinos also become too heavy.…”

Section: Discussionmentioning

confidence: 99%

Polarized window for left-right symmetry and a right-handed neutrino at the Large Hadron-Electron Collider

Mondal

Kumar

2016

Phys. Rev. D

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The breaking of parity, a fundamental symmetry between left and right is best understood in the framework of left-right symmetric extension of the standard model. We show that the production of a heavy right-handed neutrino at the proposed Large Hadron-Electron Collider (LHeC) could give us the most simple and direct hint of the scale of this breaking in left-right symmetric theories. This production mode gives a lepton number violating signal with ∆L = 2 which is very clean and has practically no standard model background. We highlight that the right-handed nature of WR exchange which defines the left-right symmetric theories can be confirmed by using a polarized electron beam and also enhance the production rates with relatively lower beam energy.

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“…An important point to be noted here is that the W − W + W − W + coupling is not affected from interactions in the gauge sector of non-minimal noncommutative model because there is no interaction term containing four charged boson fields in (15).…”

Section: Non-minimal Noncommutative Standard Modelmentioning

confidence: 99%

“…Equation (30) represents the Feynman rule for the non-minimal extended model and contains a lengthy momentum dependent part. These terms are derived from (15). In this case, momenta must be simultaneously r with each other as ν, λ indices are substituted.…”

Section: Feynman Rules For Qgc'smentioning

confidence: 99%

“…Although the Planck scale (10 19 GeV) is actually far from our direct access, however, assuming the possibility of the existence of large extra dimensions and given that the onset of string effects is at TeV scale, signatures of noncommutative background are expected to be observable at a few TeV [11,12]. Today, there is a positive attitude, both experimentally and theoretically, for a new physics at TeV scale and intense experimental efforts [13,14], phenomenological studies [15,16], as well as many independent model buildings [17,18] are currently underway to find out signs of the new physics beyond the standard model. Noncommutative extension of the standard model appears to be a suitable candidate for the new physics and it may finally be realized by nature at TeV domain of energy.…”

Section: Introductionmentioning

confidence: 99%

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$\mathcal{O} \,(θ)$ Feynman rules for quadrilinear gauge boson couplings in noncommutative standard model

Sajadi,

Boroun

2018

Preprint

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We examine the electroweak gauge sector of noncommutative standard model and in particular, obtain the O (θ) Feynman rules for all quadrilinear gauge boson couplings. Surprisingly, an electroweak-chromodynamics mixing appears in the gauge sector of noncommutative standard model, where photon as well as the neutral weak boson are coupled directly to three gluons. The phenomenological perspectives of the model in W − W + → ZZ scattering are studied and it is shown that there is a characteristic oscillatory behaviour in azimuthal distribution of scattering cross sections which can be interpreted as a direct signal of noncommutative standard model. Assuming the integrated luminosity 100 fb −1 , the number of W − W + → ZZ subprocesses are estimated for some values of noncommutative scale Λ NC at different center of mass energies and the results are compared with predictions of the standard model.

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Search for Anomalous $WW\gamma $ and $WWZ$ Couplings with Polarized $e$-Beam at the LHeC

Cited by 23 publications

References 4 publications

Anomalous WWγ couplings with beam polarization at the Compact Linear Collider

Anomalous WWγ couplings with beam polarization at the Compact Linear Collider

Polarized window for left-right symmetry and a right-handed neutrino at the Large Hadron-Electron Collider

$\mathcal{O} \,(θ)$ Feynman rules for quadrilinear gauge boson couplings in noncommutative standard model

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