Measurement of the Dipion Mass Spectrum in X(3872){yields}J/{psi}{pi}{sup +}{pi}{sup -} Decays
- University of Illinois, Urbana, Illinois 61801 (United States)
- University of Florida, Gainesville, Florida 32611 (United States)
We measure the dipion mass spectrum in X(3872){yields}J/{psi}{pi}{sup +}{pi}{sup -} decays using 360 pb{sup -1} of pp collisions at {radical}(s)=1.96 TeV collected with the CDF II detector. The spectrum is fit with predictions for odd C-parity ({sup 3}S{sub 1}, {sup 1}P{sub 1}, and {sup 3}D{sub J}) charmonia decaying to J/{psi}{pi}{sup +}{pi}{sup -}, as well as even C-parity states in which the pions are from {rho}{sup 0} decay. The latter case also encompasses exotic interpretations, such as a D{sup 0}D*{sup 0} molecule. Only the {sup 3}S{sub 1} and J/{psi}{rho} hypotheses are compatible with our data. Since {sup 3}S{sub 1} is untenable on other grounds, decay via J/{psi}{rho} is favored, which implies C=+1 for the X(3872). Models for different J/{psi}-{rho} angular momenta L are considered. Flexibility in the models, especially the introduction of {rho}-{omega} interference, enables good descriptions of our data for both L=0 and 1.
- OSTI ID:
- 20777085
- Journal Information:
- Physical Review Letters, Vol. 96, Issue 10; Other Information: DOI: 10.1103/PhysRevLett.96.102002; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
Similar Records
Dipion invariant mass spectrum in X(3872){yields}J/{psi}{pi}{pi}
Measurement of the Dipion Mass Spectrum in the Decay X(3872) → J/Ψ π+ π- at the CDF II Experiment
Related Subjects
ANGULAR MOMENTUM
FERMILAB COLLIDER DETECTOR
HADRONIC PARTICLE DECAY
INCLUSIVE INTERACTIONS
INTERFERENCE
J PSI-3097 MESONS
OMEGA-782 MESONS
PAIR PRODUCTION
PARITY
PARTICLE IDENTIFICATION
PIONS MINUS
PIONS PLUS
PROTON-PROTON INTERACTIONS
RHO-770 MESONS
TEV RANGE 01-10