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Search for the doubly charmed baryon Xi+cc
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LHCb Collaboration (Including: Back, J. J., Craik, Daniel, Dossett, D., Gershon, T. J., Kreps, Michal, Latham, Thomas, Pilar, T., Poluektov, Anton, Reid, Matthew M., Silva Coutinho, R., Wallace, Charlotte, Whitehead, M. (Mark) and Williams, M. P.). (2013) Search for the doubly charmed baryon Xi+cc. Journal of High Energy Physics, Volume 2013 (Number 12). Article number 90. doi:10.1007/JHEP12(2013)090 ISSN 1029-8479.
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WRAP_jhep.12.13.090.pdf - Published Version Available under License Creative Commons Attribution. Download (796Kb) | Preview |
Official URL: http://dx.doi.org/10.1007/JHEP12(2013)090
Abstract
A search for the doubly charmed baryon Ξ+
cc in the decay mode Ξ+
cc→ Λ
+
c K−π
+
is performed with a data sample, corresponding to an integrated luminosity of 0.65 fb−1
, of
pp collisions recorded at a centre-of-mass energy of 7 TeV. No significant signal is found in
the mass range 3300–3800 MeV/c2
. Upper limits at the 95% confidence level on the ratio of
the Ξ+
cc production cross-section times branching fraction to that of the Λ
+
c
, R, are given as
a function of the Ξ+
cc mass and lifetime. The largest upper limits range from R < 1.5×10−2
for a lifetime of 100 fs to R < 3.9 × 10−4
for a lifetime of 400 fs.
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