Search for the doubly heavy $ {\Xi}_{bc}^0 $ baryon via decays to D$^{0}$pK$^{−}$ - INSPIRE

DataBETA

Search for the doubly heavy ${\Xi}_{bc}^0$ baryon via decays to D $^{0}$ pK $^{−}$

LHCb

Collaboration

Sep 5, 2020

21 pages

Published in:

JHEP 11 (2020) 095

Published: 2020

e-Print:

2009.02481 [hep-ex]

DOI:

10.1007/JHEP11(2020)095

PDG:

{{\mathit \Xi}_{{{bc}}}^{0}}

\rightarrow

{{\mathit D}^{0}}{{\mathit p}}{{\mathit K}^{-}}

{\times }

{{\mathit b}}

\rightarrow

{{\mathit \Xi}_{{{bc}}}^{0}}

{{\mathit b}}

\rightarrow

{{\mathit \Lambda}_{{{b}}}}

Report number:

LHCb-PAPER-2020-014,
CERN-EP-2020-137

Experiments:

CERN-LHC-LHCb

View in:

reference search36 citations

Citations per year

Abstract: (Springer)

A search for the doubly heavy

{\Xi}_{bc}^0

baryon using its decay to the D

^{0}

pK

^{–}

final state is performed using proton-proton collision data at a centre-of-mass energy of 13 TeV collected by the LHCb experiment between 2016 and 2018, corresponding to an integrated luminosity of 5.4 fb

^{−1}

. No significant signal is found in the invariant mass range from 6.7 to 7.2 GeV/c

^{2}

. Upper limits are set at 95% credibility level on the ratio of the

{\Xi}_{bc}^0

production cross-section times its branching fraction to D

^{0}

pK

^{−}

relative to that of the

{\Lambda}_b^0\to {D}^0{pK}^{-}

decay. The limits are set as a function of the

{\Xi}_{bc}^0

mass and lifetime hypotheses, in the rapidity range from 2.0 to 4.5 and in the transverse momentum region from 5 to 25 GeV/c. Upper limits range from 1.7 × 10

^{−2}

to 3.0 × 10

^{−1}

for the considered

{\Xi}_{bc}^0

mass and lifetime hypotheses.[graphic not available: see fulltext]

Note:

All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-014.html (LHCb public pages)

B physics
Hadron-Hadron scattering (experiments)
Heavy quark production
QCD
Spectroscopy
p p: scattering
p p: colliding beams
Xi/bc: hadroproduction
baryon: hadronic decay
baryon: lifetime

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