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Weak electron scattering: e−+p→Λ+v

Слабое электронное рассеяние: e−+p→Λ+ν

  • Published:
Il Nuovo Cimento A (1965-1970)

Summary

It is emphasized that intense, monochromatic electron beams from superconducting accelerators may make it possible to study certain electron-induced weak-interaction processes. In particular the process e−+p→Λ+ν is analysed. After a review of a number of familiar points which can be examined via this reaction,i.e. i) time-reversal invariance, ii) the Cabibbo hypothesis, iii) partial conservation of the strangeness-changing axial vector current (PCAC), we give numerical estimates for the total and differential cross-sections and for possible time-reversal violating terms, based on simple models.

Riassunto

Si mette in evidenza come intensi fasci monocromatici di elettroni, derivanti da acceleratori superconduttori, possono permettere lo studio di alcune interazioni deboli indotte dagli elettroni. Si analizza in particolare il processo e−+p→Λ+ν. Dopo aver considerato un certo numero di argomenti familiari esaminabili con questa reazione, e cioè i) l'invarianza all’inversione del tempo, ii) l’ipotesi di Cabibbo, iii) la conservazione parziale della corrente vettoriale assiale che cambia la stranezza (PCAC), si calcolano approssimativamente il valore numerico delle sezioni d'urto totale e differenziale e i possibili valori che violano l’inversione del tempo, basandosi su di un semplice modello.

Резюме

Подчеркивается, что интенсивные монохроматические электронные пучки из сверхпроводящих ускорителей, по-видимому, сделают возможным изучение некоторых индуцированных электронамм процессов слабых взаимодействий. В частности, анализируется процесс e−+pрΛ+н. После рассмотрения рлда хорошо известных вопросов, которые могут быть исследованы через эту реакцию, а именно: i) инвариантность по отношению к инверсии времени, ii) гипотеза Кабиббо, iii) частичное сохранение изменлющего странность аксиально-векторного тока (PCAC), мы приводим численные оценки для полных и дифференциальных поперечных сечений и для возможных членов нарушающих инверсию времени, которые основаны на этих простых моделях.

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Literatur

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  20. We are indebted toJ. Prentki for emphasizing this possibility.

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Author notes

  1. R. J. Oakes

    Present address: Physics Department, Northwestern University, Evanston, Ill.

Authors and Affiliations

  1. CERN, Geneva

    H. W. Fearing

  2. Research Institute for Natural Sciences, Woodstock College, Woodstock, Md.

    P. C. McNamee

  3. Center for Theoretical Physics Department of Physics and Astronomy, University of Maryland, College Park, Md.

    P. C. McNamee

  4. The Institute for Advanced Study, Princeton, N.J.

    R. J. Oakes

Authors
  1. H. W. Fearing
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  2. P. C. McNamee
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  3. R. J. Oakes
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Additional information

NATO Postdoctoral Fellow. Address after 1 Oct. 1968: Department of Physics, State University of New York at Stony Brook, Stony Brook, N. Y.

Research sponsored by the Air Force Office of Scientific Research, Office of Aerospace Research, United States Air Force, under AFOSR Grant No. 68-1365.

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Fearing, H.W., McNamee, P.C. & Oakes, R.J. Weak electron scattering: e−+p→Λ+v. Nuovo Cimento A (1965-1970) 60, 10–24 (1969). https://doi.org/10.1007/BF02823293

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