Abstract
We study the semileptonic and non-leptonic charmed baryon decays with SU(3) flavor symmetry, where the charmed baryons can be Bc = (Ξ 0 c , Ξ + c , Λ + c ), B ′ c = (Σ (++,+,0) c , Ξ ′ (+,0) c , Ω 0 c ), Bcc = (Ξ + + cc , Ξ + cc , Ω + c ) or Bcc = Ω + + ccc . With B (′) n denoted as the baryon octet (decuplet), we find that the Bc → B ′ n ℓ+νℓ decays are forbidden, while the Ω 0 c → Ω−ℓ+νℓ, Ω + cc → Ω 0 c ℓ+νℓ, and Ω + + ccc → Ω + cc ℓ+νℓ decays are the only existing Cabibbo- allowed modes for B ′ c → B ′ n ℓ+νℓ, Bcc → B ′ c ℓ+νℓ, and Bccc → B (′) cc ℓ+νℓ, respectively. We predict the rarely studied Bc → B (′) n M decays, such as \( \mathrm{\mathcal{B}}\left({\Xi}_c^0\to {\Lambda}^0{\overline{K}}^0,{\Xi}_c^{+}\to {\Xi}^0{\pi}^{+}\right)=\left(8.3\pm 0.9,\ 8.0\pm 4.1\right)\times {10}^{-3}\kern0.5em \mathrm{and}\kern0.5em \mathrm{\mathcal{B}}\left({\Lambda}_c^{+}\to {\Delta}^{++}{\pi}^{-},{\Xi}_c^0\to {\Omega}^{-}{K}^{+}\right)=\left(5.5\pm 1.3,\kern0.5em 4.8\pm 0.5\right)\times {10}^{-3} \). For the observation, the doubly and triply charmed baryon decays of \( {\Omega}_{cc}^{+}\to {\Xi}_c^{+}{\overline{K}}^0,{\Xi}_{cc}^{++}\to \left({\Xi}_c^{+}{\pi}^{+},{\varSigma}_c^{++}{\overline{K}}^0\right),\kern0.5em \mathrm{and}\kern0.5em {\Omega}_{ccc}^{++}\to \left({\Xi}_{cc}^{++}{\overline{K}}^0,{\Omega}_{cc}^{+}{\pi}^{+},{\Xi}_c^{+}{D}^{+}\right) \) are the favored Cabibbo-allowed decays, which are accessible to the BESIII and LHCb experiments.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Particle Data Group collaboration, C. Patrignani et al., Review of Particle Physics, Chin. Phys. C 40 (2016) 100001 [INSPIRE].
BESIII collaboration, M. Ablikim et al., Measurements of absolute hadronic branching fractions of Λ + c baryon, Phys. Rev. Lett. 116 (2016) 052001 [arXiv:1511.08380] [INSPIRE].
BESIII collaboration, M. Ablikim et al., Evidence for the singly-Cabibbo-suppressed decay Λ + c → pη and search for Λ + c → pπ 0, Phys. Rev. D 95 (2017) 111102 [arXiv:1702.05279] [INSPIRE].
LHCb collaboration, Observation of the doubly charmed baryon Ξ + + cc , Phys. Rev. Lett. 119 (2017) 112001 [arXiv:1707.01621] [INSPIRE].
LHCb collaboration, Observation of J/ψp Resonances Consistent with Pentaquark States in Λ 0 b → J/ψK − p Decays, Phys. Rev. Lett. 115 (2015) 072001 [arXiv:1507.03414] [INSPIRE].
LHCb collaboration, Model-independent evidence for J/ψp contributions to Λ 0 b → J/ψpK − decays, Phys. Rev. Lett. 117 (2016) 082002 [arXiv:1604.05708] [INSPIRE].
LHCb collaboration, Evidence for exotic hadron contributions to Λ 0 b → J/ψpπ − decays, Phys. Rev. Lett. 117 (2016) 082003 [arXiv:1606.06999] [INSPIRE].
LHCb collaboration, Determination of the X(3872) meson quantum numbers, Phys. Rev. Lett. 110 (2013) 222001 [arXiv:1302.6269] [INSPIRE].
LHCb collaboration, Quantum numbers of the X(3872) state and orbital angular momentum in its ρ 0 Jψ decay, Phys. Rev. D 92 (2015) 011102 [arXiv:1504.06339] [INSPIRE].
LHCb collaboration, Observation of the resonant character of the Z(4430)− state, Phys. Rev. Lett. 112 (2014) 222002 [arXiv:1404.1903] [INSPIRE].
SELEX collaboration, M. Mattson et al., First observation of the doubly charmed baryon Ξ + cc , Phys. Rev. Lett. 89 (2002) 112001 [hep-ex/0208014] [INSPIRE].
SELEX collaboration, A. Ocherashvili et al., Confirmation of the double charm baryon Ξ + cc (3520) via its decay to pD + K −, Phys. Lett. B 628 (2005) 18 [hep-ex/0406033] [INSPIRE].
S.P. Ratti, New results on c-baryons and a search for cc-baryons in FOCUS, Nucl. Phys. Proc. Suppl. 115 (2003) 33 [INSPIRE].
BaBar collaboration, B. Aubert et al., Search for doubly charmed baryons Ξ + cc and Ξ + + cc in BABAR, Phys. Rev. D 74 (2006) 011103 [hep-ex/0605075] [INSPIRE].
Belle collaboration, R. Chistov et al., Observation of new states decaying into Λ + c K − π + and Λ + c K 0 S π −, Phys. Rev. Lett. 97 (2006) 162001 [hep-ex/0606051] [INSPIRE].
LHCb collaboration, Search for the doubly charmed baryon Ξ + cc , JHEP 12 (2013) 090 [arXiv:1310.2538] [INSPIRE].
F.-S. Yu, H.-Y. Jiang, R.-H. Li, C.-D. Lü, W. Wang and Z.-X. Zhao, Discovery Potentials of Doubly Charmed Baryons, arXiv:1703.09086 [INSPIRE].
A. Ali, G. Kramer and C.-D. Lü, Experimental tests of factorization in charmless nonleptonic two-body B decays, Phys. Rev. D 58 (1998) 094009 [hep-ph/9804363] [INSPIRE].
C.Q. Geng, Y.K. Hsiao and J.N. Ng, Direct CP-violation in \( {B}^{\mp}\to p\overline{p}{K}^{\left(\ast \right)\pm } \), Phys. Rev. Lett. 98 (2007) 011801 [hep-ph/0608328] [INSPIRE].
Y.K. Hsiao and C.Q. Geng, Direct CP-violation in Λb decays, Phys. Rev. D 91 (2015) 116007 [arXiv:1412.1899] [INSPIRE].
J.D. Bjorken, Spin Dependent Decays of the Λc, Phys. Rev. D 40 (1989) 1513 [INSPIRE].
C.-D. Lü, W. Wang and F.-S. Yu, Test flavor SU(3) symmetry in exclusive Λc decays, Phys. Rev. D 93 (2016) 056008 [arXiv:1601.04241] [INSPIRE].
H.-Y. Cheng and B. Tseng, Nonleptonic weak decays of charmed baryons, Phys. Rev. D 46 (1992) 1042 [Erratum ibid. D 55 (1997) 1697] [INSPIRE].
H.-Y. Cheng and B. Tseng, Cabibbo allowed nonleptonic weak decays of charmed baryons, Phys. Rev. D 48 (1993) 4188 [hep-ph/9304286] [INSPIRE].
P. Zenczykowski, Quark and pole models of nonleptonic decays of charmed baryons, Phys. Rev. D 50 (1994) 402 [hep-ph/9309265] [INSPIRE].
Fayyazuddin and Riazuddin, On the relative strength of W exchange and factorization contributions in hadronic decays of charmed baryons, Phys. Rev. D 55 (1997) 255 [Erratum ibid. D 56 (1997) 531] [INSPIRE].
R. Dhir and C.S. Kim, Axial-Vector Emitting Weak Nonleptonic Deacys of Ω 0 c Baryon, Phys. Rev. D 91 (2015) 114008 [arXiv:1501.04259] [INSPIRE].
X.-G. He, Y.K. Hsiao, J.Q. Shi, Y.L. Wu and Y.F. Zhou, The CP-violating phase γ from global fit of rare charmless hadronic B decays, Phys. Rev. D 64 (2001) 034002 [hep-ph/0011337] [INSPIRE].
H.-K. Fu, X.-G. He and Y.K. Hsiao, B → η(η ′)K(π) in the standard model with flavor symmetry, Phys. Rev. D 69 (2004) 074002 [hep-ph/0304242] [INSPIRE].
Y.K. Hsiao, C.-F. Chang and X.-G. He, A global SU(3)/U(3) flavor symmetry analysis for B → PP with η −η′ Mixing, Phys. Rev. D 93 (2016) 114002 [arXiv:1512.09223] [INSPIRE].
X.-G. He and G.-N. Li, Predictive CP violating relations for charmless two-body decays of beauty baryons Ξ −,0 b and Λ 0 b with flavor SU(3) symmetry, Phys. Lett. B 750 (2015) 82 [arXiv:1501.00646] [INSPIRE].
M. He, X.-G. He and G.-N. Li, CP-Violating Polarization Asymmetry in Charmless Two-Body Decays of Beauty Baryons, Phys. Rev. D 92 (2015) 036010 [arXiv:1507.07990] [INSPIRE].
M.J. Savage and R.P. Springer, SU(3) Predictions for Charmed Baryon Decays, Phys. Rev. D 42 (1990) 1527 [INSPIRE].
M.J. Savage, SU(3) violations in the nonleptonic decay of charmed hadrons, Phys. Lett. B 257 (1991) 414 [INSPIRE].
G. Altarelli, N. Cabibbo and L. Maiani, Weak Nonleptonic Decays of Charmed Hadrons, Phys. Lett. B 57 (1975) 277 [INSPIRE].
W. Wang, Z.-P. Xing and J. Xu, Weak Decays of Doubly Heavy Baryons: SU(3) Analysis, arXiv:1707.06570 [INSPIRE].
C.Q. Geng, Y.K. Hsiao and Y.-H. Lin, Non-leptonic two-body weak decays of Λc(2286), arXiv:1708.02460 [INSPIRE].
S. Fajfer, P. Singer and J. Zupan, The Radiative leptonic decays D 0 → e + e − γ, μ + μ − γ in the standard model and beyond, Eur. Phys. J. C 27 (2003) 201 [hep-ph/0209250] [INSPIRE].
H.-n. Li, C.-D. Lü and F.-S. Yu, Branching ratios and direct CP asymmetries in D → PP decays, Phys. Rev. D 86 (2012) 036012 [arXiv:1203.3120] [INSPIRE].
Open Access
This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
Author information
Authors and Affiliations
Corresponding author
Additional information
ArXiv ePrint: 1709.00808
Rights and permissions
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.
The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/.
About this article
Cite this article
Geng, C.Q., Hsiao, Y.K., Liu, CW. et al. Charmed baryon weak decays with SU(3) flavor symmetry. J. High Energ. Phys. 2017, 147 (2017). https://doi.org/10.1007/JHEP11(2017)147
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP11(2017)147