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Dicus, Duane A.; Kallianpur, Kalpana J.

doi:10.1103/physrevd.32.35

Cited by 94 publications

(144 citation statements)

References 5 publications

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“…Following the notation of Dicus and Kallianpur [12], the energies of the leptons E l ± are expressed as dimensionless variables X l ± defined as:…”

Section: Double Energy Distributionmentioning

confidence: 99%

“…[10], which are total cross sections, single energy distribution of the secondary lepton, lepton angular distribution and forward-backward (FB) and left-right (LR) asymmetries. In addition to the above we consider an important and useful energy-energy correlation of the type first considered in the context of some anomalous gauge couplings by Dicus and Kallianpur [12]. Despite its obvious utility it has not received much attention, and we will demonstrate how this correlation in combination with beam polarizations can extract important information on Z ′ models.…”

Section: Introductionmentioning

confidence: 96%

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Signals of additional Z′ boson in e + e − → W + W − at the ILC with polarized beams

Ananthanarayan

Patra

Poulose

2011

J. High Energ. Phys.

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We consider the possibility of fingerprinting the presence of heavy additional Z ′ bosons that arise naturally in extensions of the standard model such as E6 models and left-right symmetric models, through their mixing with the standard model Z boson. By considering a class of observables including total cross sections, energy distributions and angular distributions of decay leptons we find significant deviation from the standard model predictions for these quantities with right-handed electrons and left-handed positrons at √ s=800 GeV. The deviations being less pronounced at smaller centre of mass energies as the models are already tightly constrained. Our work suggests that the ILC should have a strong beam polarization physics program particularly with these configurations. On the other hand, a forward backward asymmetry and lepton fraction in the backward direction are more sensitive to new physics with realistic polarization due to interesting interplay with the neutrino t-channel diagram. This process complements the study of fermion pair production processes that have been considered for discrimination between these models.

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“…Following the notation of Dicus and Kallianpur [12], the energies of the leptons E l ± are expressed as dimensionless variables X l ± defined as:…”

Section: Double Energy Distributionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Signals of additional Z′ boson in e + e − → W + W − at the ILC with polarized beams

Ananthanarayan

Patra

Poulose

2011

J. High Energ. Phys.

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show abstract

“…[3] which considers only the low energy limit k 1 · k 2 ≪ m 2 . In such a limit, one can calculate M using the effective Lagrangian for γγ → ννγ [9] and replacing one of the photons by the external magnetic field.…”

Section: A γγ → ννmentioning

confidence: 99%

“…In Sec. III, we begin with a briefly discussion on our earlier work [4], where the weak-field expansion technique is applied to γγ → νν and its crossed processes in a background magnetic field [3,9]. To further illustrate the technique of weak-field expansion, we also calculate the decay rates of γ → νν and the neutrino Cherenkov process ν → νγ in a background magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Weak-field expansion for processes in a homogeneous background magnetic field

et al. 2000

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The weak-field expansion of the charged fermion propagator under a uniform magnetic field is studied. Starting from Schwinger's proper-time representation, we express the charged fermion propagator as an infinite series corresponding to different Landau levels. This infinite series is then reorganized according to the powers of the external field strength B. For illustration, we apply this expansion to γ → νν and ν → νγ decays, which involve charged fermions in the internal loop. The leading and subleading magnetic-field effects to the above processes are computed.

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“…[107]. In figure 14 we present the energy distribution of the decay lepton coming from W − L , keeping the other W unpolarized and allowing it to decay into anything.…”

Section: Energy Distribution Of the Decay Leptonsmentioning

confidence: 99%

Probing strongly interacting W’s at the ILC with polarized beams

Ananthanarayan

Patra

Poulose

2012

J. High Energ. Phys.

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Abstract:We study the possibility of fingerprinting a strongly interacting W boson sector which is consistent with present day LHC searches at the ILC with longitudinal as well as transversely polarized electron and positron beams. We account for the final state interaction using a suitable Omnès formalism in terms of a plausible resonance description, and carry out thorough analyses of cross sections, asymmetries and angular distributions of the W ′ s. We carry out a comparison with other extensions of the Standard Model, where heavy additional Z ′ bosons arise naturally. We also consider the effect of the strong final state interaction on a correlation that depends on (φ − − φ + ), where the φ ∓ are the azimuthal angles of decay leptons, and find that it is a useful discriminant.

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Energy distribution of leptons frome+e−→
Duane A. Dicus
¹
,
Kalpana J. Kallianpur
²

Cited by 94 publications

References 5 publications

Signals of additional Z′ boson in e + e − → W + W − at the ILC with polarized beams

Signals of additional Z′ boson in e + e − → W + W − at the ILC with polarized beams

Weak-field expansion for processes in a homogeneous background magnetic field

Probing strongly interacting W’s at the ILC with polarized beams

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Energy distribution of leptons frome+e−→Duane A. Dicus1, Kalpana J. Kallianpur2

Cited by 94 publications

References 5 publications

Signals of additional Z′ boson in e + e − → W + W − at the ILC with polarized beams

Signals of additional Z′ boson in e + e − → W + W − at the ILC with polarized beams

Weak-field expansion for processes in a homogeneous background magnetic field

Probing strongly interacting W’s at the ILC with polarized beams

Contact Info

Product

Resources

About

Energy distribution of leptons frome+e−→
Duane A. Dicus
¹
,
Kalpana J. Kallianpur
²