Functional Schrödinger equation approach to high-energy multileg amplitudes

Cornwall, JM; Tiktopoulos, G

dc.contributor.author	Cornwall, JM	en
dc.contributor.author	Tiktopoulos, G	en
dc.date.accessioned	2014-03-01T01:09:25Z
dc.date.available	2014-03-01T01:09:25Z
dc.date.issued	1993	en
dc.identifier.issn	0556-2821	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10965
dc.subject.classification	Astronomy & Astrophysics	en
dc.subject.classification	Physics, Particles & Fields	en
dc.subject.other	PERTURBATION-THEORY	en
dc.subject.other	BARYON-NUMBER	en
dc.subject.other	LARGE ORDER	en
dc.subject.other	SCATTERING	en
dc.subject.other	SPHALERONS	en
dc.subject.other	BREAKDOWN	en
dc.subject.other	BEHAVIOR	en
dc.title	Functional Schrödinger equation approach to high-energy multileg amplitudes	en
heal.type	journalArticle	en
heal.identifier.primary	10.1103/PhysRevD.47.1629	en
heal.identifier.secondary	http://dx.doi.org/10.1103/PhysRevD.47.1629	en
heal.language	English	en
heal.publicationDate	1993	en
heal.abstract	We use functional Schrodinger equation techniques, both for lambdaphi4 theory (no tunneling) and for B + L violation in SU(2) gauge theory, to estimate amplitudes for the decay of one off-shell particle into N on-shell particles, in the fixed-angle regime, when Nlambda greater-than-or-equal-to 1 (lambdaphi4) or at the sphaleron energy approximately M(W)/alpha(W) for gauge theory. The results, based for lambdaphi4 theory on a mean-gradient approach approximate for large N (small lambda) and for gauge theory on an accurate picture of the ground-state wave functional for large potentials, are that in lambdaphi4 theory the leading behavior of such an amplitude is e(-betaN), beta approximately 1, while in gauge, theory the (B + L)-violating cross section is suppressed by e(-2pi/alphaW), with an exponent 1/2 the 't Hooft exponent.	en
heal.publisher	AMERICAN PHYSICAL SOC	en
heal.journalName	Physical Review D	en
dc.identifier.doi	10.1103/PhysRevD.47.1629	en
dc.identifier.isi	ISI:A1993KN18200040	en
dc.identifier.volume	47	en
dc.identifier.issue	4	en
dc.identifier.spage	1629	en
dc.identifier.epage	1639	en