Published 2004 | Version v1
Journal article Metadata-only

Charmonium polarization in e+e- and heavy-ion collisions

Creators

  • 1. Institute of Theoretical and Experimental physics, Moscow (Russian Federation)

Description

In e+e- annihilation at √s=10.6 GeV, Belle Collaboration found that J/ψ mesons are predominantly produced in association with an extra c-barc pair. The possible mechanisms of J/ψ production are discussed and probability of the production of c-barc pair is estimated. The choice between these mechanisms can be done by measuring J/ψ polarization. It is suggested, that in case of heavy-ion collisions one may expect remarkable transverse polarization of produced J/ψ, if quark-gluon plasma is formed

Abstract (Russian)

В e+e-аннигиляции при √s=10.6 ГэВ коллаборация Belle обнаружила, что J/ψ-мезоны преимущественно образуются в сопровождении c-barc-пары. Обсуждаются возможные механизмы образования J/ψ, оценивается вероятность образования c-barc-пары. Выбор между этими механизмами может быть сделан путезм измерения поляризации J/ψ. Предполагается, что в случае соударений тяжелых ионов можно ожидать значительную поперечную поляризацию J/ψ при образовании кварк-глюонной плазмы

Additional details

Publishing Information

Journal Title
Fizika Ehlementarnykh Chastits i Atomnogo Yadra
Journal Volume
35
Journal Issue
7
Journal Page Range
p. 170-176
ISSN
0367-2026
CODEN
FECAAR

Conference

Title
High energy spin physics and quantum chromodynamics
Original Conference Title
Spinovaya fizika pri vysokikh ehnergiyakh i kvantovaya khromodinamika
Dates
16-20 Sep 2003
Place
Dubna (Russian Federation)

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
36060495
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ANNIHILATION; CHARMONIUM; ELECTRON-POSITRON INTERACTIONS; FEYNMAN DIAGRAM; HEAVY ION REACTIONS; ION-ION COLLISIONS; J PSI-3097 MESONS; PARTICLE PRODUCTION; QUARK MATTER; SPIN ORIENTATION
Descriptors DEC
BOSONS; CHARMONIUM; COLLISIONS; DIAGRAMS; ELEMENTARY PARTICLES; HADRONS; INFORMATION; INTERACTIONS; ION COLLISIONS; LEPTON-LEPTON INTERACTIONS; MATTER; MESONS; NUCLEAR REACTIONS; ORIENTATION; PARTICLE INTERACTIONS; QUARKONIUM; VECTOR MESONS

Optional Information

Notes
27 refs., 1 tab.