Anomalous Triple Gauge Boson Couplings in $e^{-}e^{+} \to γγ$ for Non Commutative Standard Model

Details Anomalous Triple Gauge Boson Couplings in $e^{-}e^{+} \to γγ$ for Non Commutative Standard Model Anomalous Triple Gauge Boson Couplings in $e^{-}e^{+} \to γγ$ for Non Commutative Standard Model

2011-11-22

arxiv.org/abs/1111.5173v2

Physics Letters B 708 (2012) 150-156

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 12 figures. Matched with version published in Phys. Lett.B. New references added. Some calculational details and plo

Scientific paper

10.1016/j.physletb.2012.01.049

We investigate $e^{+}e^{-}\to \gamma\gamma$ process within the Seiberg-Witten expanded noncommutative standard model(NCSM) scenario in the presence of anomalous triple gauge boson couplings. This study is done with and without initial beam polarization and we restrict ourselves to leading order effects of non commutativity i.e. $O(\Theta)$. The non commutative(NC) corrections are sensitive to the electric component($\vec{\Theta}_E$) of NC parameter. We include the effects of earth rotation in our analysis. This study is done by investigating the effects of non commutativity on different time averaged cross section observables. We have also defined forward backward asymmetries which will be exclusively sensitive to anomalous couplings. We have looked into the sensitivity of these couplings at future experiments at the International Linear Collider(ILC). This analysis is done under realistic ILC conditions with the Center of mass energy(c.m.) $\sqrt{s}=800$GeV and integrated luminosity L=500fb${}^{-1}$. The scale of non commutativity is assumed to be $\Lambda = 1$TeV. The limits on anomalous couplings of the order $10^{-1}$ from forward backward asymmetries while much stringent limits of the order $10^{-2}$ from total cross section are obtained if no signal beyond SM is seen.

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