Charmonium options for the X(3872)
By T. Barnes, S. Z. D. O. Physics, Astronomy, U. Tennessee, P. Division, Oak Ridge National Laboratory, Ottawa-Carleton Institute for Physics, D. Physics, Carleton University. 2003
174 citations recorded by the source corpus.
In this paper we consider all possible $1D$ and $2P$ $c\overline{c}$ assignments for the recently discovered $X(3872).$ Taking the experimental mass as input, we give numerical results for the $E1$ radiative widths as well as the three principal types of strong decays; open-charm, $c\overline{c}$ annihilation and closed-charm hadronic transitions. We find that many assignments may be immediately eliminated due to the small observed total width. The remaining viable $c\overline{c}$ assignments are $1{}^{3}{D}_{3},$ $1{}^{3}{D}_{2},$ $1{}^{1}{D}_{2},$ $2{}^{3}{P}_{1}$ and $2{}^{1}{P}_{1}.$ A search for the mode $J/\ensuremath{\psi}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ can establish the C parity of the $X(3872),$ which will eliminate many of these possibilities. Radiative transitions can then be used to test the remaining assignments, as they populate characteristic final states. The $1{}^{3}{D}_{2}$ and $1{}^{1}{D}_{2}$ states are predicted to have large (ca. 50%) radiative branching fractions to ${\ensuremath{\chi}}_{c1}\ensuremath{\gamma}$ and ${h}_{c}\ensuremath{\gamma},$ respectively. We predict that the $1{}^{3}{D}_{3}$ will also be relatively narrow and will have a significant (ca. 10%) branching fraction to ${\ensuremath{\chi}}_{c2}\ensuremath{\gamma},$ and should also be observable in B decay. Tests for non-$c\overline{c}X(3872)$ assignments are also discussed.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/e22d7af70ff80a29dd47d4390b73bd3dbebd2a2c
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In Nuclear and High Energy Physics
Citations in the corpus
- The Exotic XYZ Charmonium-Like Mesons (2008, methodology): “and to be narrow (15, 16, 17, 18) so that it should be possible to observe them (19).”
- Quarkonia and their transitions (2007, background): “We shall discuss QQ̄ transitions primarily to other QQ̄ states, with some reference to processes involving QQ̄ annihilation, and will largely bypass decays to open flavor (treated, for example, in Barnes and Godfrey (2004); Barnes et al. (2005); Brambilla et al. (2004); Eichten et al. (2004, 2006)).”
- The hidden-charm pentaquark and tetraquark states (2016, background): “There are lots of discussions on the interpretation of the X(3872) as a P-wave charmonium state [581, 582, 583, 584, 585, 586, 587, 588, 589, 590, 591, 592, 593, 594, 595].”
- Bottomonium Mesons and Strategies for Their Observation (2015, background): “[14] T.”