High-energy electron-pair photoproduction from nuclei: Comparison with theory

Eickmeyer, J.; Gentile, Thomas R.; Michalowski, S. J.; Mistry, N. B.; Talman, R.; Ueno, K.

doi:10.1103/physrevd.21.3001

Cited by 5 publications

(5 citation statements)

References 5 publications

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“…1 and 2 remain accurate and easily usable. At 10 GeV, these cross sections agree with the data to within 2% [19].…”

Section: Pair Production From Isolated Atomssupporting

confidence: 82%

Pair production from 10 GeV to 10 ZeV

Klein

2006

Radiation Physics and Chemistry

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At very high energies, pair production (γ → e + e − ) exhibits many interesting features. The momentum transfer from the target is very small, so the reaction probes the macroscopic properties of the target, rather than individual nuclei. Interference between interactions with different atoms reduces the pair production cross section considerably below the Bethe-Heitler values. At very high energies, photonuclear interactions may outnumber pair production.In contrast, in crystals, the interaction amplitudes may add coherently, greatly increasing the cross sections. Pair production in matter-free magnetic fields is also possible. The highest energy pair production occurs at high energy particle colliders. This article will compare pair production in these very different regimes.

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“…1 and 2 remain accurate and easily usable. At 10 GeV, these cross sections agree with the data to within 2% [19].…”

Section: Pair Production From Isolated Atomssupporting

confidence: 82%

Pair production from 10 GeV to 10 ZeV

Klein

2006

Radiation Physics and Chemistry

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“…A summary of the results of QED calculations of pair production is contained in the review ofTsai [14]. Figure 2.15 presents a comparison of these calculations for the total cross section with experimental measurements of high energy pair production by Eickmeyer et al [18]. The calculations are in excellent agreement with the measurements for all elements and photon energies over the range 2.4-8.7 GeV.…”

Section: Pair Productionmentioning

confidence: 67%

Electromagnetic interactions

Panofsky¹

2023

Introduction to Experimental Particle Physics

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Before a particle can be detected, it must first undergo some sort of interaction in the material of a detector. Processes that result from the electromagnetic interaction are the most important for particle detection. In this chapter we will consider four major topics. The first is the loss of energy by charged particles heavier than the electron due to the excitation or ionization of atomic electrons. We will calculate the most probable value of the ionization energy loss and the distribution of the fluctuations in that quantity. Second, we will consider the interactions of electrons. These include ionization losses and the loss of energy due to photon emission (bremsstrahlung). The third topic is the interaction of photons with matter. The most important of these are the photoelectric effect, the Compton effect, and pair production. Lastly, we will examine Coulomb scattering of charged particles with the atomic nucleus, which is responsible for multiple scattering.There are additional processes that, although they are electromagnetic in nature, are more appropriately discussed in other sections of the book. These include scintillation light (Chapter 7), Cerenkov light (Chapter 8), ionization in gases (Chapter 9), electromagnetic showers (Chapter 11), and transition radiation (Chapter 12). Strong and weak nuclear interactions of particles in matter are discussed in Chapter 3.A rigorous treatment of electromagnetic effects requires calculations using QED. This theory describes the interactions in terms of the exchange and emission of photons. Since these calculations require special techniques and tend to be rather lengthy, we shall be content to present simple arguments for the processes under consideration and only quote QED results [1].

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“…The limited amount of available experimental data prevents the stratification of the analysis in terms of atomic number, [40], [37], [42], [41], [43] Al 1.119-8700 12 [40], [37], [44], [45], [42], [46], [ [48], [40], [37], [44], [45], [47], [49], [42], [50], [51], [41] Ge 1.0404-11.775 170 [52], [53], [54], [55], [56], [57], [58], [59], [60], [61], [ [64], [65], [48], [66], [40], [67], [44], [45], [49], [50], [51], [46], [ [65], [48], [69], [40], [67],…”

Section: Strategy Of This Studymentioning

confidence: 99%

“…The experimental data sample, derived from an extensive survey of the literature [37]- [74], consists of 367 measurements, which concern target elements from hydrogen to uranium and span the energy range from 1.04 MeV to 8.7 GeV. An overview of this data sample is summarized in Table II.…”

Section: B Experimental Datamentioning

confidence: 99%