Dynamical origin and the pole structure of X(3872)

The dynamical mechanism of channel coupling with the decay channels is applied to the case of coupled charmonium--DD* states with JPC=1++. A pole analysis is done and the DD* production cross section is calculated in qualitative agreement with experiment. The sharp peak at the D0D0* threshold and fl...

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Published in:Physical review letters 2010-09, Vol.105 (10), p.102002-102002, Article 102002
Main Authors: Danilkin, I V, Simonov, Yu A
Format: Article
Language:English
Subjects:
BOSONS
BREIT-WIGNER FORMULA
CHARM PARTICLES
CHARMED MESONS
CHARMONIUM
COUPLING
CROSS SECTIONS
D MESONS
D-2010 MESONS
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
HADRONS
MESONS
MEV RANGE
PARTICLE DECAY
PARTICLE STRUCTURE
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
PSEUDOSCALAR MESONS
QUARKONIUM
RESONANCE PARTICLES
VECTOR MESONS
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cited_by cdi_FETCH-LOGICAL-c338t-aee9a937d4c8a4a5a4d71a4a7bbe8b4d17db092fb8a9d39e481165b2ec693d463
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description The dynamical mechanism of channel coupling with the decay channels is applied to the case of coupled charmonium--DD* states with JPC=1++. A pole analysis is done and the DD* production cross section is calculated in qualitative agreement with experiment. The sharp peak at the D0D0* threshold and flat background are shown to be due to Breit-Wigner resonance, shifted by channel coupling from the original position of 3954 MeV for the 23P1, QQ state. A similar analysis, applied to the n=2, 3P2, 1P1, 3P0, allows us to associate the first one with the observed Z(3930) J=2 and explains the destiny of 3P0.
doi_str_mv 10.1103/PhysRevLett.105.102002
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source American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list)
subjects BOSONS
BREIT-WIGNER FORMULA
CHARM PARTICLES
CHARMED MESONS
CHARMONIUM
COUPLING
CROSS SECTIONS
D MESONS
D-2010 MESONS
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
HADRONS
MESONS
MEV RANGE
PARTICLE DECAY
PARTICLE STRUCTURE
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
PSEUDOSCALAR MESONS
QUARKONIUM
RESONANCE PARTICLES
VECTOR MESONS
title Dynamical origin and the pole structure of X(3872)
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