Search for Prompt Production of chi(c) and X(3872) in e+e- Annihilations - INSPIRE

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Search for Prompt Production of chi(c) and X(3872) in e+e- Annihilations

BaBar

Collaboration

Jul, 2007

8 pages

Published in:

Phys.Rev.D 76 (2007) 071102

e-Print:

0707.1633 [hep-ex]

DOI:

10.1103/PhysRevD.76.071102

Report number:

BABAR-PUB-07-028,
SLAC-PUB-12660

Experiments:

SLAC-PEP2-BABAR

View in:

reference search10 citations

Citations per year

Abstract: (arXiv)

We have searched for prompt production of

\chi_{c1}

,

\chi_{c2}

and X(3872) in continuum e^+e^- annihilations using a 386 fb^{-1} data sample collected around

\sqrt{s} = 10.6

GeV with the BABAR detector using the

\gamma J/\psi

decay mode. After accounting for the feed-down from

\psi(2S)\to\gamma\chi_{c1,2}

, no significant signal for prompt

\chi_{c1,2}

production is observed. We present improved upper limits on the cross-section, with the rest of the event consisting of more than two charged tracks, to be 77 fb for

\chi_{c1}

and 79 fb for

\chi_{c2}

with

e^+e^-

center-of-mass frame

\chi_c

momentum greater than 2.0 GeV at 90% confidence level. These limits are consistent with NRQCD predictions. We also set an upper limit on the prompt production of X(3872) through the decay

X(3872)\to \gamma J/\psi

.

Note:

8 pages 1 figure submitted to Phys. Rev. D (Rapid Communications)

14.40.Gx
13.66.Bc
12.38.Bx
12.38.Qk
electron positron: colliding beams
electron positron: annihilation
chi/c1(3510): direct production
chi/c2(3555): direct production
X(3872): direct production
X(3872): radiative decay

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