Summary
A gauge model for leptons is proposed, based on the groupSU 3. It establishes a minimal extension of the standard Weinberg-Salam model fixing the angle toθ w = 30°. An investigation of μ-decay and elastic νμe scattering data shows that the masses of the additionally appearing bosons can be as small as about 250 GeV. They do not introduce new processes among leptons.
Riassunto
Si propone un modello di gauge per i leptoni basato sul gruppoSU 3. Esso stabilisce un’estensione minima dell’usuale modello di Weinberg-Salam fissando l’angolo aθ w = 30°. Un’analisi dei dati del decadimento μ e dello scattering elastico νμe mostra che le masse dei bosoni che appaiono addizionalmente possono essere basse fino a 250 GeV circa. Non introducono nuovi processi tra leptoni.
Резюме
Предлагается калибровочная модель для лептонов, основанная на группеSU 3. Устанавливается минимальное расширение стандартной модели Вейнберга-Салама, фиксируя уголθ w = 30°. Исследование μ-распада и данных по упругому νμe рассеянию показывает, что массы дополнительно появляющихся бозонов могут быть до 250 ГэВ. Они не вводят новых процессов между лептонами.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
S. Weinberg:Phys. Rev. Lett.,19, 1264 (1967);A. Salam: inElementary Particles Theory, edited byN. Swartholm (Stockholm, 1968).
R. Gatto:Nuovo Cimento,27, 313 (1963);A. Salam andJ. C. Ward:Phys. Lett.,13, 168 (1964);S. Weinberg:Phys. Rev. D,5, 1962 (1972);Y. Achiman:Phys. Lett. B,70, 187 (1977);Y. Achiman andB. Stech: Heidelberg University preprint HD-THEP 78-6. For models based onSU 3×U 1 gauge group including quarks seeJ. Schechter andY. Ueda:Phys. Rev. D,8, 484 (1973);J. Schechter andM. Singer:Phys. Rev. D,9, 1769 (1974);L. Clavelli andT. Yang:Phys. Rev. D,10, 658 (1974);V. Gupta andH. Mani:Phys. Rev. D,10, 1310 (1974);C. H. Albright, C. Jarlskog andM. Tjia:Nucl. Phys. B,86, 535 (1975);F. Gürsey, P. Ramond andP. Sikivie:Phys. Rev. D,12, 2166 (1975);P. Ramond:Nucl. Phys. B,110, 214 (1976);G. Segré andJ. Weyers:Phys. Lett. B,65, 243 (1976);A. N. Ivanov:Sov. J. Nucl. Phys.,24, 533 (1976);L. K. Pandit:Pramana 7, 291 (1976);8, 68 (1977);P. Langacker andG. Segré:Phys. Rev. Lett.,39, 259 (1977);J. Kandaswamy andJ. Schechter:Phys. Lett. B,70, 204 (1977);B. W. Lee andS. Weinberg:Phys. Rev. Lett.,38, 1237 (1977);M. Yoshimura:Prog. Theor. Phys.,57, 237 (1977);R. M. Barnett andL. N. Chang:Phys. Lett. B,72, 233 (1977);F. Buccella andM. Lusignoli:Phys. Rev. Lett.,40, 1475 (1978);P. Langacker, G. Segré andM. Golshani:Phys. Rev. D,17, 1402 (1978). Theories based on the simple groupSU 3 areH. Fritzsch andP. Minkowski:Phys. Lett. B,63, 99 (1976);J. Kandaswamy andJ. Schechter:Phys. Rev. D,15, 251 (1977);D. Horn andG. G. Ross:Phys. Lett. B,69, 364 (1977).
E. S. Konopinski andH. M. Mahmoud:Phys. Rev.,92, 1045 (1953).
J. J. de Swart:Rev. Mod. Phys.,35, 916 (1963).
See,e.g.,L. Jauneau: inTextbook on Elementary Particle Physics: Weak Interactions, edited byM. K. Gaillard andM. Nicolic (Paris, 1977).
See,e.g.,L. M. Sehgal: invited talk presented at theInternational Conference «Neutrino-78», Purdue University, May 1978 (preprint Aachen 1978 PITHA-102).
S. L. Adler:Phys. Rev.,177, 2426 (1969);J. S. Bell andR. Jackiw:Nuovo Cimento A,60, 47 (1969).
J. P. Pati andA. Salam:Phys. Lett. B,58, 333 (1975).
L. J. Nodulman:New results from DELCO, SLAC-Pub 2104 (March 1978).
Author information
Authors and Affiliations
Additional information
Postal address: Postfach 21 02 09, D-5900 Siegen 21.
Traduzione a cura della Redazione.
Переведено редакцией.
Rights and permissions
About this article
Cite this article
Dahmen, H.D., Nölle, J. & Schülke, L. Minimal gauge model for the leptonic interactions with fixed Weinberg angle of 30°. Nuov Cim A 53, 178–190 (1979). https://doi.org/10.1007/BF02776413
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF02776413