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Abstract:

The possible charm origin of the rapid increase at small pT of the pp electron yield is discussed in the light of recent e+e- data bearing on charm decays. The charm decay electron spectrum required for a quantitative interpretation of the effect is found to be significantly consistent with the momentum distribution of the e+e- anomalous electron-plus-hadron events observed at DORIS. The amount of the charm cross-section times the branching ratio, Be σ, demanded by the pp → e + X data is compatible with existing experimental upper limits, once the recent experimental information on charm decays is taken into account. Since charm-originated leptons are limited to very small Feynman x, there is no conflict with the reported evidence for a pair origin of near-forward produced leptons. See note added in proof for revised conclusions based on new e+e- data. © 1977 Società Italiana di Fisica.

Registro:

Documento: Artículo
Título:On the origin of small-pT direct electrons in pp collisions
Autor:Ferro Fontán, C.; Odorico, R.
Filiación:Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
Istituto di Fisica Teorica dell'Università, Trieste, Italy
Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, Italy
Año:1977
Volumen:42
Número:1
Página de inicio:141
Página de fin:159
DOI: http://dx.doi.org/10.1007/BF02730311
Título revista:Il Nuovo Cimento A
Título revista abreviado:Nuov Cim A
ISSN:03693546
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03693546_v42_n1_p141_FerroFontan

Referencias:

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Citas:

---------- APA ----------
Ferro Fontán, C. & Odorico, R. (1977) . On the origin of small-pT direct electrons in pp collisions. Il Nuovo Cimento A, 42(1), 141-159.
http://dx.doi.org/10.1007/BF02730311
---------- CHICAGO ----------
Ferro Fontán, C., Odorico, R. "On the origin of small-pT direct electrons in pp collisions" . Il Nuovo Cimento A 42, no. 1 (1977) : 141-159.
http://dx.doi.org/10.1007/BF02730311
---------- MLA ----------
Ferro Fontán, C., Odorico, R. "On the origin of small-pT direct electrons in pp collisions" . Il Nuovo Cimento A, vol. 42, no. 1, 1977, pp. 141-159.
http://dx.doi.org/10.1007/BF02730311
---------- VANCOUVER ----------
Ferro Fontán, C., Odorico, R. On the origin of small-pT direct electrons in pp collisions. Nuov Cim A. 1977;42(1):141-159.
http://dx.doi.org/10.1007/BF02730311