Summary
The radiative corrections to the leptonic decay rateΓ(V → ℓ+ℓ−) of a neutral vector meson V ≡ ρ0, ω or ϕ are evaluated for ℓ± ≡ e± or μ± including the contributions due to the emission of hard photons. Admitting a radiative energy loss of at least 10% of the total c.m. energy of the decaying system, the radiative corrections are found to reduce Γ(V → e+e−) by at most 10% and to hardly changeΓ(V → μ+μ− in the range of c.m. energies from 500 to 1500 MeV.
Riassunto
Si calcolano le correzioni radiative al rapporto di decadimento leptonico,Γ(V → ℓ+ℓ−), di un mesone vettoriale neutro V ≡ ρ0, ω o ϕ per ℓ± ≡ e± o μ±, comprendendo i contributi dovuti all’emissione di fotoni duri. Ammettendo una perdita di energia irraggiata di almeno il 10% dell’energia totale nel centro di massa del sistema che decade, si ottiene che le correzioni radiative riducono Γ(V→e+e−) di almeno il 10% e cambiano di poco Γ(V → e+e−) nell’intervallo di energie nel centro di massa da 500 a 1500 MeV.
Рэзюме
Вычисляются радиационные поправки к скоростям лептонных распадовΓ(V → ℓ+ℓ−) нейтрального векторного мезона V ≡ ρ0, ω или φ для ℓ± ≡ e± или μ±, включая вклады, обусловленные испусканием жестких фотонов. Допуская, что радиационные потери энергии могут достигать, по крайней мере, 10% от полной ц.м. энергии распадающейся системы, получено, что радиационные поправки сводятся к Γ(V→e+e−), что составляет самое большое 10%, и существенно меняются Γ(V → e+e−) в области ц.м. энергий от 500 до 1500 МеВ.
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References
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Address after November 1, 1967: The Theoretical Physics Institute, University of Alberta, Edmonton.
Traduzione a cura della Redazione.
Перевебено ребакуией.
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Ehlotzky, F., Mitter, H. Radiative corrections to the leptonic-decay modes of the neutral vector mesons ρ0, ω, ϕ. Nuovo Cimento A (1965-1970) 55, 181–192 (1968). https://doi.org/10.1007/BF02760115
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DOI: https://doi.org/10.1007/BF02760115