Characteristic size for the neutrino

Lucio, J. L.; Rosado, A.; Zepeda, A.

doi:10.1103/physrevd.31.1091

Cited by 39 publications

(38 citation statements)

References 14 publications

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“…In particular, even though in the static limit of zero momentum transfer, q 2 → 0, the form-factor F 1 (q 2 , ξ) becomes independent of ξ, its first derivative with respect to q 2 , which corresponds to the classic definition of the NCR, namely r 2 ν = − 6 ∂F 1 (q 2 ,ξ) ∂q 2 | q 2 =0 , continues to depend on it. The problems associated with the definition of the NCR within the SM and beyond have been examined in detail in a series of papers, and various proposals have been put forth on how to bypass them [5,6,7,8,9,10,11,12,13,14,15,16]. The main idea behind these works has been to exploit judiciously the GFP-independence of the entire physical amplitude, and eventually define a piece of it which is kinematically akin to an electromagnetic form factor, and is in addition endowed with a set of important physical properties.…”

Section: Introductionmentioning

confidence: 99%

Charge radius of the neutrino

et al. 2000

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Using the pinch technique we construct at one-loop order a neutrino charge radius, which is finite, depends neither on the gauge-fixing parameter nor on the gauge-fixing scheme employed, and is process-independent. This definition stems solely from an effective proper photon-neutrino one-loop vertex, with no reference to box or self-energy contributions. The rôle of the W W box in this construction is critically examined. In particular it is shown that the exclusion of the effective W W box from the definition of the neutrino charge radius is not a matter of convention but is in fact dynamically realized when the target-fermions are right-handedly polarized. In this way we obtain a unique decomposition of effective self-energies, vertices, and boxes, which separately respect electroweak gauge invariance. We elaborate on the tree-level origin of the mechanism which enforces at one-loop level massive cancellations among the longitudinal momenta appearing in the Feynman diagrams, and in particular those associated with the non-abelian character of the theory. Various issues related to the known connection between the pinch technique and the Background Field Method are further clarified. Explicit closed expressions for the neutrino charge radius are reported.

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Section: Introductionmentioning

confidence: 99%

Charge radius of the neutrino

et al. 2000

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“…Dirac neutrino has three form factors which are charge, magnetic moment and anapole moment since the electric dipole moment is zero in CP conserving theory [2]. Majorana neutrino has only one form factor which is the anapole moment [3]. In this manner the neutrinos seem to be likely candidates for carrying features of physics beyond the Standard Model.…”

Section: Introductionmentioning

confidence: 99%

“…, due only to the Z boson exchange , according to the diagrams depicted in Fig.1, and using the expression for the amplitude given in Eq.2 (3,4), is respectively After long and straightforward calculation, we obtain for the total width of…”

Section: Introductionmentioning

confidence: 99%

Bounds on the magnetic moment of the τ-neutrino via the process e ⁺ e ⁻ → νν̄γ

Aydin¹,

Bayar²,

Kilic³

2008

Chinese Phys. C

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“…We remind that only statistical error for the TEX-ONO measurement [6] was taken into account. One can conclude, that from the measurement of the weak mixing angle with 1% precision it is possible to find a strong evidence for the electron neutrino charge radius, which is estimated theoretically to be of the order of 0.4×10 −32 cm 2 [7][8][9].…”

Section: Weak Mixing Angle and Effective Electron Neutrino Charge Radiusmentioning

confidence: 99%

“…There have been discussions in the literature on the possibility to define and to calculate a physically observable neutrino charge radius [7][8][9][10]. All relevant references can be found in Ref.…”

Section: Weak Mixing Angle and Effective Electron Neutrino Charge Radiusmentioning

confidence: 99%

Probing nonstandard interactions with reactor neutrinos

Barranco

Miranda

Rashba

2009

Nuclear Physics B - Proceedings Supplements

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New limits on the weak mixing angle and on the electron neutrino effective charge radius in the low energy regime, below 100 MeV, are obtained from a combined fit of all electron-(anti)neutrino electron elastic scattering measurements. We have included the recent TEXONO measurement with a CsI (Tl) detector. Only statistical error of this measurement has been taken into account. Weak mixing angle is found to be sin 2 θW = 0.255 +0.022 −0.023 . The electron neutrino effective charge radius squared is bounded to be r 2 νe = (0.9 +0.9 −1.0 ) × 10 −32 cm 2 . The sensitivity of future low energy neutrino experiments to nonstandard interactions of neutrinos with quarks is also discussed.

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Characteristic size for the neutrino

Cited by 39 publications

References 14 publications

Charge radius of the neutrino

Charge radius of the neutrino

Bounds on the magnetic moment of the τ-neutrino via the process e ⁺ e ⁻ → νν̄γ

Probing nonstandard interactions with reactor neutrinos

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Characteristic size for the neutrino

Cited by 39 publications

References 14 publications

Charge radius of the neutrino

Charge radius of the neutrino

Bounds on the magnetic moment of the τ-neutrino via the process e + e − → νν̄γ

Probing nonstandard interactions with reactor neutrinos

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Product

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Bounds on the magnetic moment of the τ-neutrino via the process e ⁺ e ⁻ → νν̄γ