Publication
Title
Measurement of the dipion mass spectrum in decays
Author
Institution/Organisation
CDF Collaboration
Abstract
We measure the dipion mass spectrum in X(3872)→J/ψπ+π- decays using 360   pb-1 of p̅ p collisions at √s=1.96   TeV collected with the CDF II detector. The spectrum is fit with predictions for odd C-parity (3S1, 1P1, and 3DJ) charmonia decaying to J/ψπ+π-, as well as even C-parity states in which the pions are from ρ0 decay. The latter case also encompasses exotic interpretations, such as a D0D̅ *0 molecule. Only the 3S1 and J/ψρ hypotheses are compatible with our data. Since 3S1 is untenable on other grounds, decay via J/ψρ is favored, which implies C=+1 for the X(3872). Models for different J/ψ-ρ angular momenta L are considered. Flexibility in the models, especially the introduction of ρ-ω interference, enables good descriptions of our data for both L=0 and 1.
Language
English
Source (journal)
Physical review letters. - New York, N.Y.
Publication
New York, N.Y. : 2006
ISSN
0031-9007
Volume/pages
96:10(2006), p. 1-7
Article Reference
102002
ISI
000236062800017
000236969700019
Medium
E-only publicatie
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 02.04.2010
Last edited 20.08.2017
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