CP-violating effect of QCD vacuum in quark fragmentation

We demonstrate that the non-trivial CP-violating structure of QCD vacuum can lead to an observable effect in e^+e^-\to q\bar q\to 2-jet annihilation. We find that the sign of the jet handedness correlation can be opposite to that predicted by factorization of q~\bar q fragmentation and CP-conjugatio...

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Detalles Bibliográficos
Autores principales: Efremov, A., Kharzeev, D.
Lenguaje:eng
Publicado: 1995
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(95)01329-6
http://cds.cern.ch/record/283813
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author Efremov, A.
Kharzeev, D.
author_facet Efremov, A.
Kharzeev, D.
author_sort Efremov, A.
collection CERN
description We demonstrate that the non-trivial CP-violating structure of QCD vacuum can lead to an observable effect in e^+e^-\to q\bar q\to 2-jet annihilation. We find that the sign of the jet handedness correlation can be opposite to that predicted by factorization of q~\bar q fragmentation and CP-conjugation of the two jets. A simple model estimation of the handedness correlation magnitude is in agreement with the recent experimental evidence.
id cern-283813
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1995
record_format invenio
spelling cern-2838132020-07-23T02:50:43Zdoi:10.1016/0370-2693(95)01329-6http://cds.cern.ch/record/283813engEfremov, A.Kharzeev, D.CP-violating effect of QCD vacuum in quark fragmentationParticle Physics - PhenomenologyWe demonstrate that the non-trivial CP-violating structure of QCD vacuum can lead to an observable effect in e^+e^-\to q\bar q\to 2-jet annihilation. We find that the sign of the jet handedness correlation can be opposite to that predicted by factorization of q~\bar q fragmentation and CP-conjugation of the two jets. A simple model estimation of the handedness correlation magnitude is in agreement with the recent experimental evidence.We demonstrate that the non-trivial CP-violating structure of QCD vacuum can lead to an observable effect in $e~+e~-\to q\bar q\to 2$-jet annihilation. We find that the sign of the jet handedness correlation can be opposite to that predicted by factorization of $q\bar q$ fragmentation and CP-conjugation of the two jets. A simple model estimation of the handedness correlation magnitude is in agreement with the recent experimental evidence.We demonstrate that the non-trivial CP-violating structure of QCD vacuum can lead to an observable effect in e + e − → q q → 2- jet annihilation. We find that the sign of the jet handedness correlation can be opposite to that predicted by factorization of q q fragmentation and CP-conjugation of the two jets. A simple model estimation of the handedness correlation magnitude is given.hep-ph/9506412CERN-TH-95-139CERN-TH-95-139oai:cds.cern.ch:2838131995-06-23
spellingShingle Particle Physics - Phenomenology
Efremov, A.
Kharzeev, D.
CP-violating effect of QCD vacuum in quark fragmentation
title CP-violating effect of QCD vacuum in quark fragmentation
title_full CP-violating effect of QCD vacuum in quark fragmentation
title_fullStr CP-violating effect of QCD vacuum in quark fragmentation
title_full_unstemmed CP-violating effect of QCD vacuum in quark fragmentation
title_short CP-violating effect of QCD vacuum in quark fragmentation
title_sort cp-violating effect of qcd vacuum in quark fragmentation
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/0370-2693(95)01329-6
http://cds.cern.ch/record/283813
work_keys_str_mv AT efremova cpviolatingeffectofqcdvacuuminquarkfragmentation
AT kharzeevd cpviolatingeffectofqcdvacuuminquarkfragmentation

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