Search for the doubly charmed baryon $\Xi_{cc}^+$

Aaij, Roel; Abellán Beteta, Carlos; Ackernley, Thomas; Adeva, Bernardo; Adinolfi, Marco; Afsharnia, Hossein; Aidala, Christine Angela; Aiola, Salvatore; Ajaltouni, Ziad; Akar, Simon

doi:10.1007/s11433-019-1471-8

Search for the doubly charmed baryon $\Xi_{cc}^+$

LHCb

Collaboration

Sep 26, 2019

15 pages

Published in:

Sci.China Phys.Mech.Astron. 63 (2020) 2, 221062

Published: Nov 19, 2019

e-Print:

1909.12273 [hep-ex]

DOI:

10.1007/s11433-019-1471-8 (publication)

Report number:

LHCb-PAPER-2019-029,
CERN-EP-2019-199

Experiments:

CERN-LHC-LHCb

View in:

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Abstract: (Springer)

A search for the doubly charmed baryon

\Xi_{cc}^+

is performed through its decay to the

\Lambda_c^ + {K^ -}{\pi ^ +}

final state, using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV. The data correspond to a total integrated luminosity of 9 fb

^{−1}

. No significant signal is observed in the mass range from 3.4 to 3.8 GeV/c

^{2}

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

\Xi_{cc}^+

production cross-section times the branching fraction to that of

\Lambda_c^ +

and

\Xi_{cc}^{+ +}

baryons. The limits are determined as functions of the

\Xi_{cc}^+

mass for different lifetime hypotheses, in the rapidity range from 2.0 to 4.5 and the transverse momentum range from 4 to 15 GeV/c.

Note:

All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-029.html

14.20.Lq
13.85.Rm
14.65.Dw
12.38.Qk
charmed baryons
limits on production of particles
charmed quarks
experimental tests
p p: colliding beams
lifetime: difference

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