Search for the doubly charmed baryon Ξcc+ in the Ξc+<sup>π−</sup><sup>π+</sup> final state
Authors
Aaij, R
Abdelmotteleb, ASW
Abellán Beteta, C
Ackernley, T
Adeva, B
Adinolfi, M
Afsharnia, H
Agapopoulou, C
Aidala, CA
Aiola, S
Ajaltouni, Z
Akar, S
Albrecht, J
Alessio, F
Alexander, M
Alfonso Albero, A
Aliouche, Z
Alkhazov, G
Alvarez Cartelle, P
Amato, S
Amey, JL
Amhis, Y
An, L
Anderlini, L
Andreianov, A
Andreotti, M
Archilli, F
Artamonov, A
Artuso, M
Arzymatov, K
Aslanides, E
Atzeni, M
Audurier, B
Bachmann, S
Bachmayer, M
Back, JJ
Baladron Rodriguez, P
Balagura, V
Baldini, W
Baptista Leite, J
Barbetti, M
Barlow, RJ
Barsuk, S
Barter, W
Bartolini, M
Baryshnikov, F
Basels, JM
Bashir, S
Bassi, G
Batsukh, B
Battig, A
Bay, A
Beck, A
Becker, M
Bedeschi, F
Bediaga, I
Beiter, A
Belavin, V
Belin, S
Bellee, V
Belous, K
Belov, I
Belyaev, I
Bencivenni, G
Ben-Haim, E
Berezhnoy, A
Bernet, R
Berninghoff, D
Bernstein, HC
Bertella, C
Bertolin, A
Betancourt, C
Betti, F
Bezshyiko, I
Bhasin, S
Bhom, J
Bian, L
Bieker, MS
Bifani, S
Billoir, P
Birch, M
Bishop, FCR
Bitadze, A
Bizzeti, A
Bjørn, M
Blago, MP
Blake, T
Blanc, F
Blusk, S
Bobulska, D
Boelhauve, JA
Boente Garcia, O
Boettcher, T
Boldyrev, A
Bondar, A
Bondar, N
Borghi, S
Borisyak, M
Borsato, M
Borsuk, JT
Publication Date
2021Journal Title
Journal of High Energy Physics
ISSN
1029-8479
Publisher
Springer Science and Business Media LLC
Volume
2021
Issue
12
Language
en
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Aaij, R., Abdelmotteleb, A., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., et al. (2021). Search for the doubly charmed baryon Ξcc+ in the Ξc+<sup>π−</sup><sup>π+</sup> final state. Journal of High Energy Physics, 2021 (12) https://doi.org/10.1007/JHEP12(2021)107
Abstract
A search for the doubly charmed baryon $\it{\Xi}_{cc}^{+}$ is performed in
the $\it{\Xi}_{c}^{+} \pi^{-} \pi^{+}$ invariant-mass spectrum, where the
$\it{\Xi}_{c}^{+}$ baryon is reconstructed in the $p K^{-} \pi^{+}$ final
state. The study uses proton-proton collision data collected with the LHCb
detector at a centre-of-mass energy of 13$\mathrm{\,Te\kern -0.1em V}$,
corresponding to a total integrated luminosity of 5.4$\,\mathrm{fb}^{-1}$. No
significant signal is observed in the invariant-mass range of
3.4$-$3.8$\mathrm{\,Ge\kern -0.1em V}/c^2$. Upper limits are set on the ratio
of branching fractions multiplied by the production cross-section with respect
to the $\it{\Xi}_{cc}^{++} \rightarrow (\it{\Xi}_{c}^{+} \rightarrow p K^{-}
\pi^{+}) \pi^{+}$ decay for different $\it{\Xi}_{cc}^{+}$ mass and lifetime
hypotheses in the rapidity range from 2.0 to 4.5 and the transverse momentum
range from 2.5 to 25$\mathrm{\,Ge\kern -0.1em V}/c$. The results from this
search are combined with a previously published search for the
$\it{\Xi}_{cc}^{+} \rightarrow \it{\Lambda}_{c}^{+} K^{-} \pi^{+}$ decay mode,
yielding a maximum local significance of 4.0 standard deviations around the
mass of 3620$\mathrm{\,Me\kern -0.1em V}/c^2$, including systematic
uncertainties. Taking into account the look-elsewhere effect in the
3.5$-$3.7$\mathrm{\,Ge\kern -0.1em V}/c^2$ mass window, the combined global
significance is 2.9 standard deviations including systematic uncertainties.
Keywords
Regular Article - Experimental Physics, Charm physics, Hadron-Hadron scattering (experiments), Branching fraction, QCD, Flavor physics
Identifiers
jhep12(2021)107, 17378
External DOI: https://doi.org/10.1007/JHEP12(2021)107
This record's URL: https://www.repository.cam.ac.uk/handle/1810/335602
Rights
Licence:
http://creativecommons.org/licenses/by/4.0/
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