Width and partial widths of unstable particles

Pietro A. Grassi; Bernd A. Kniehl; Alberto Sirlin

doi:10.1103/PhysRevLett.86.389

Width and partial widths of unstable particles

Pietro A. Grassi, Bernd A. Kniehl, Alberto Sirlin

Risultato della ricerca: Contributo su rivista › Articolo in rivista › peer review

Abstract

The precise and consistent definitions of branching ratios and partial widths of unstable particles have been notoriously difficult and elusive. This is because unstable particles are not asymptotic states and, consequently, they lie somewhat outside the traditional formulation of quantum field theory. A very simple definition is presented and demonstrated in the Z⁰-boson case.

Lingua originale	Inglese
pagine (da-a)	389-392
Numero di pagine	4
Rivista	Physical Review Letters
Volume	86
Numero di pubblicazione	3
DOI	https://doi.org/10.1103/PhysRevLett.86.389
Stato di pubblicazione	Pubblicato - 15 gen 2001
Pubblicato esternamente	Sì

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10.1103/PhysRevLett.86.389

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abstract = "The precise and consistent definitions of branching ratios and partial widths of unstable particles have been notoriously difficult and elusive. This is because unstable particles are not asymptotic states and, consequently, they lie somewhat outside the traditional formulation of quantum field theory. A very simple definition is presented and demonstrated in the Z0-boson case.",

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AB - The precise and consistent definitions of branching ratios and partial widths of unstable particles have been notoriously difficult and elusive. This is because unstable particles are not asymptotic states and, consequently, they lie somewhat outside the traditional formulation of quantum field theory. A very simple definition is presented and demonstrated in the Z0-boson case.

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Width and partial widths of unstable particles

Abstract

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