Accompanied dileptons as a probe of an effective quark-lepton contact interaction at e+ e-- colliders

Argyres, EN; Korakianitis, O; Papadopoulos, CG; Vlassopulos, SDP

dc.contributor.author	Argyres, EN	en
dc.contributor.author	Korakianitis, O	en
dc.contributor.author	Papadopoulos, CG	en
dc.contributor.author	Vlassopulos, SDP	en
dc.date.accessioned	2014-03-01T01:08:14Z
dc.date.available	2014-03-01T01:08:14Z
dc.date.issued	1991	en
dc.identifier.issn	0550-3213	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10357
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0043121892&partnerID=40&md5=96cb28764737c189fb5664de0c59380c	en
dc.subject.classification	Physics, Particles & Fields	en
dc.subject.other	HADRON COLLIDERS	en
dc.subject.other	BEAMSTRAHLUNG	en
dc.subject.other	BOSON	en
dc.subject.other	COMPOSITENESS	en
dc.subject.other	SUPERSTRINGS	en
dc.subject.other	LEPTOQUARK	en
dc.subject.other	COLLISIONS	en
dc.subject.other	SIGNALS	en
dc.subject.other	PAIRS	en
dc.title	Accompanied dileptons as a probe of an effective quark-lepton contact interaction at e+ e-- colliders	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1991	en
heal.abstract	An effective quark-lepton contact interaction, possibly a low-energy remnant of deeply virtual heavy exotic exchanges, gives rise to characteristic spherical events in e+e- collisions, with an unlike-sign dilepton pair accompanied by distant jet activity and no missing energy, due to e+e- --> l+l- + qqBAR. The helicity amplitudes for this process, where the new hypothetical interaction interferes with the standard gamma + Z0 exchanges are calculated by spinor-product techniques. The system of leptons and jets produced does not exhibit any particular structures, as would be the case with similar events due to Higgs particles, leptoquarks or extra neutral currents. Our accompanied dilepton signal events are separable by appropriate cuts from a background due to heavy-quark production and their angular distribution is flatter than expected from the standard gamma + Z0 contributions.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Nuclear Physics B	en
dc.identifier.isi	ISI:A1991FH14000001	en
dc.identifier.volume	354	en
dc.identifier.issue	1	en
dc.identifier.spage	1	en
dc.identifier.epage	23	en