Analysis of the quantum numbers $J^{PC}$ of the $X(3872)$ - INSPIRE

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Analysis of the quantum numbers $J^{PC}$ of the $X(3872)$

CDF

Collaboration

Dec, 2006

7 pages

Published in:

Phys.Rev.Lett. 98 (2007) 132002

e-Print:

hep-ex/0612053 [hep-ex]

DOI:

10.1103/PhysRevLett.98.132002

Report number:

FERMILAB-PUB-06-485-E

Experiments:

FNAL-E-0830

View in:

reference search375 citations

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Abstract: (arXiv)

We present an analysis of angular distributions and correlations of the X(3872) particle in the exclusive decay mode X(3872)->J/psi pi+ pi- with J/psi->mu+ mu-. We use 780 pb -1 of data from ppbar collisions at sqrt{s} = 1.96 TeV collected with the CDF II detector at the Fermilab Tevatron. We derive constraints on spin, parity, and charge conjugation parity of the X(3872) particle by comparing measured angular distributions of the decay products with predictions for different JPC hypotheses. The assignments JPC = 1++ and 2-+ are the only ones consistent with the data.

Note:

update to journal version

14.40.Gx
13.25.Gv
12.39.Mk
CDF
anti-p p: colliding beams
anti-p p: inclusive reaction
X(3872): hadroproduction
X(3872): quantum number
X(3872): hadronic decay
mass spectrum: (J/psi(3100) pi+ pi-)

References(22)

Figures(5)

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