Electron-positron pair generation by a neutrino in a magnetic field

Borisov, A.; Zhukovskii, V. Ch.; Lysov, B.A.

doi:10.1007/bf00898878

Cited by 4 publications

(5 citation statements)

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“…the so-called field dynamical parameter χ of the relativistic particle 2 propagating in a relatively weak electromagnetic field, F < B e (F = E and/or B), could appear rather high. In this case the field in the particle rest frame can exceed essentially the critical value and is very close to the crossed field ( E ⊥ B, E = B).…”

mentioning

confidence: 99%

“…The theoretical study of the process of the electron -positron pair production by a neutrino in the crossed field limit has a rather long history [1][2][3][4][5]. A correct type of the dependence of the probability on the dynamical parameter χ in the leading log approximation, namely, ∼ χ 2 ln χ, was found in the paper [1], where the numerical coefficient was wrong, however.…”

mentioning

confidence: 99%

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Lepton Pair Production by High-Energy Neutrino in an External Electromagnetic Field

2000

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The process of the lepton pair production by a neutrino propagating in an external electromagnetic field is investigated in the framework of the Standard Model. Relatively simple exact expression for the probability as the single integral is obtained, which is suitable for a quantitative analysis.Nowadays, it is well established that a medium makes an active influence on the quantum processes. It stimulates a constantly growing interest in the particle physics in medium, especially in view of possible astrophysical manifestations. It should be noted that a consideration of an intense electromagnetic field as the medium, along with a dense matter, is physically justified indeed. Really, the field strengths inside the astrophysical objects can reach the critical Schwinger value B e = m 2 e /e ≃ 4.41 · 10 13 G 1 , and even could exceed it essentially. On the other hand, the situation is possible when 1 We use natural units in which c = = 1.

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mentioning

confidence: 99%

mentioning

confidence: 99%

Lepton Pair Production by High-Energy Neutrino in an External Electromagnetic Field

2000

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“…where dW is the probability of transition of the neutrino produced in process (2) to an element of the phase volume dn ν = V d 3 k /(2π) 3 . It follows from (14) that the quantityṖ α calculated in process (2) (see formula (4)) can be represented asṖ…”

Section: Calculation Of σ νν→Ementioning

confidence: 99%

“…The interior of such a disk is dense and hot (typical densities are ρ 3 · 10 10 g/cm 3 , and typical temperatures are T > 1 MV), it is therefore opaque for photons, and its temperature decreases due to the neutrino emission from the bulk in the Urka processes p + e − → n + ν e , n+ e + → p +ν e with a typical luminosity L ν,ν ≈ 10 52 erg/s. In processes (1) and (2), the electron-positron plasma is therefore "pumped" into the vicinity of the disk interior.…”

Section: Introductionmentioning

confidence: 99%

Processes of electron-positron plasma production by a high-energy neutrino in a strong magnetic field

Gvozdev

Osokina

2015

Theor Math Phys

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Under the conditions of a strongly magnetized hyperaccretion disk around a Kerr black hole, we study the processes νi +νi → e − + e + and νi(νi) B −→ νi(νi) + e + + e − of electron-positron plasma production near the disk. We calculate the plasma production rate in these processes for some known parameters of neutrino emission from the disk while the magnetic field distribution is determined by qualitative considerations. We show that the magnetic field influence on the cross section of the annihilation process νi +νi → e − + e + can be neglected if ω 2 eB m 2 e . We also show that the rate of energy-momentum production in the e + e − plasma in the reaction νi(νi) B −→ νi(νi) + e + + e − significantly depends on the magnetic field distribution over the disk. To obtain the final estimate of the plasma production rate in this reaction, the strong magnetic field distribution near the neutrino emitting part of the disk must be determined.

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“…The crossed process to the neutrino pair emission is the production of the electronpositron pair by a neutrino, ν → νe − e + , which is also kinematically opened only in the presence of a magnetic field. The probability of this process in a 'weak' field was calculated in the papers [6,7]. In our papers [8] the process of the production of the e + e − pair by a neutrino was investigated in both cases of the 'weak' (6) and 'strong' (8) field limits.…”

Section: Neutrino -Electron Processes In a Strong Magnetic Fieldmentioning

confidence: 99%

Plasma influence on the neutrino — electron processes in a strong magnetic field

Кузнецов¹,

Михеев

2000

Nuclear Physics B - Proceedings Supplements

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An influence of the magnetized electron -positron plasma on the absorption and loss of the energy and momentum in a process of neutrino propagation is investigated. A total contribution of all crossed processes, ν → νe − e + , νe − → νe − , νe + → νe + , νe − e + → ν, is found for the first time, which appears not to depend on the chemical potential of electron-positron gas. Relatively simple expressions for the probability and mean losses of the neutrino energy and momentum are obtained, which are suitable for a quantitative analysis.

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Electron-positron pair generation by a neutrino in a magnetic field

Cited by 4 publications

References 1 publication

Lepton Pair Production by High-Energy Neutrino in an External Electromagnetic Field

Lepton Pair Production by High-Energy Neutrino in an External Electromagnetic Field

Processes of electron-positron plasma production by a high-energy neutrino in a strong magnetic field

Plasma influence on the neutrino — electron processes in a strong magnetic field

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