Charmed-strange Baryon Research Articles

Latest ALICE results on charm and beauty hadronisation in hadronic collisions

The study of heavy-flavour mesons and baryons in hadronic collisions provides unique access to the properties of heavy-quark hadronisation in the presence of large partonic densities, where new mechanisms of hadron formation beyond in-vacuum fragmentation can emerge. Performing these measurements in intervals of charged-particle multiplicities across different collision systems provides sensitivity to understand whether different hadronisation mechanisms are at play in small and large hadronic colliding systems. In this contribution, a selection of the latest charm and beauty production measurements in proton–proton (pp) collisions is presented, which can shed light on the modification of the heavy-quark hadronisation mechanisms with respect to leptonic collisions. New published results of the production of all prompt charm ground states in pp collisions at √S = 13 TeV, which allowed us to measure the charm fragmentation fractions and the total cc production cross section at midrapidity, will be shown. The new final measurement of non-prompt (i.e. originating from beauty-hadron decays) Λc+ baryons in the same collisions system will be discussed to provide a quantitative comparison between the hadronisation properties of beauty and charm hadrons. New measurements of Ξc0 production as a function of charged-particle multiplicity in pp collisions at √S = 13, and of Ξc0 production in p–Pb collisions at √SNN = 5.02 TeV, will be also presented, shedding further light on the hadronisation of charm-strange baryons in different colliding systems.

First measurement of [formula omitted] production in pp collisions at [formula omitted] TeV

The inclusive production of the charm–strange baryon Ωc0 is measured for the first time via its hadronic decay into Ω−π+ at midrapidity (|y|<0.5) in proton–proton (pp) collisions at the centre-of-mass energy s=13 TeV with the ALICE detector at the LHC. The transverse momentum (pT) differential cross section multiplied by the branching ratio is presented in the interval 2<pT<12GeV/c. The pT dependence of the Ωc0-baryon production relative to the prompt D0-meson and to the prompt Ξc0-baryon production is compared to various models that take different hadronisation mechanisms into consideration. In the measured pT interval, the ratio of the pT-integrated cross sections of Ωc0 and prompt Λc+ baryons multiplied by the Ω−π+ branching ratio is found to be larger by a factor of about 20 with a significance of about 4σ when compared to e+e− collisions.

Possible molecular states from interactions of charmed strange baryons* *Supported by the National Natural Science Foundation of China (11675228)

In this study, we investigate possible molecular states composed of two charmed strange baryons from the interaction and their hidden-charm hidden-strange partners from the interaction. With the aid of heavy quark chiral effective Lagrangians, the interactions of charmed strange baryons are described with light meson exchanges. The potential kernels are constructed and inserted into the quasipotential Bethe–Salpeter equation. The bound states are produced from most interactions considered, which suggests that strong attractions exist widely between the charmed strange baryons. Experimental search for these types of molecular states is suggested in future high-precision measurements.

Mass behavior of hidden-charm open-strange pentaquarks inspired by the established Pc molecular states

Stimulated by the meson-baryon molecular interpretations of the $P_c$ states ($P_c(4312)/P_c(4440)/P_c(4457)$), we systematically study the interactions between an $S-$wave charm-strange baryon $\Xi_c^{(\prime,*)}$ and an anti-charmed meson $\bar{D}^{(*)}$ in a coupled channel analysis. Effective potentials for the $\Xi_c^{(\prime,*)}\bar{D}^{(*)}$ interactions in a one-boson-exchange model can be related to those in the $\Sigma_c^{(*)}\bar{D}^{(*)}$ systems by using the $SU(3)$ flavor symmetry and heavy quark symmetry. Our results can predict several promising hidden-charm molecular pentaquarks with strangeness $|S|=1$, which include the $\Xi_c^{\prime}\bar{D}$ states with $I(J^P)=0,1(1/2^-)$, the $\Xi_c^*\bar{D}$ states with $0,1(3/2^-)$, the $\Xi_c^{\prime}\bar{D}^*$ states with $0(1/2^-)$ and $0,1(3/2^-)$, and the $\Xi_c^*\bar{D}^*$ states with $0(1/2^-,3/2^-,5/2^-)$.

Measurement of the Cross Sections of Ξ_{c}^{0} and Ξ_{c}^{+} Baryons and of the Branching-Fraction Ratio BR(Ξ_{c}^{0}→Ξ^{-}e^{+}ν_{e})/BR(Ξ_{c}^{0}→Ξ^{-}π^{+}) in pp Collisions at sqrt[s]=13 TeV.

The p_{T}-differential cross sections of prompt charm-strange baryons Ξ_{c}^{0} and Ξ_{c}^{+} were measured at midrapidity (|y|<0.5) in proton-proton (pp) collisions at a center-of-mass energy sqrt[s]=13 TeV with the ALICE detector at the LHC. The Ξ_{c}^{0} baryon was reconstructed via both the semileptonic decay (Ξ^{-}e^{+}ν_{e}) and the hadronic decay (Ξ^{-}π^{+}) channels. The Ξ_{c}^{+} baryon was reconstructed via the hadronic decay (Ξ^{-}π^{+}π^{+}) channel. The branching-fraction ratio BR(Ξ_{c}^{0}→Ξ^{-}e^{+}ν_{e})/BR(Ξ_{c}^{0}→Ξ^{-}π^{+})=1.38±0.14(stat)±0.22(syst) was measured with a total uncertainty reduced by a factor of about 3 with respect to the current world average reported by the Particle Data Group. The transverse momentum (p_{T}) dependence of the Ξ_{c}^{0}- and Ξ_{c}^{+}-baryon production relative to the D^{0} meson and to the Σ_{c}^{0,+,++}- and Λ_{c}^{+}-baryon production are reported. The baryon-to-meson ratio increases toward low p_{T} up to a value of approximately 0.3. The measurements are compared with various models that take different hadronization mechanisms into consideration. The results provide stringent constraints to these theoretical calculations and additional evidence that different processes are involved in charm hadronization in electron-positron (e^{+}e^{-}) and hadronic collisions.

First lattice QCD calculation of semileptonic decays of charmed-strange baryons Ξ c * *Supported in part by Natural Science Foundation of China (11735010, U2032102, 11653003, 12005130, 11521505, 12070131001, 11975127, 11935017, 12005130, 12125503), Natural Science Foundation of Shanghai (15DZ2272100), the China Postdoctoral Science Foundation and the National Postdoctoral Program for Innovative Talents (BX20190207), National Key Research and Development Program of China

While the standard model is the most successful theory to describe all the interactions and constituents of elementary particle physics, it has been constantly scrutinized for over four decades. Weak decays of charm quarks can be used to measure the coupling strength between quarks in different families and serve as an ideal probe for CP violation. As the lowest charm-strange baryons with three different flavors, baryons (composed of or ) have been extensively studied in experiments. In this study, we use state-of-the-art lattice QCD techniques to generate 2+1 clover fermion ensembles with two lattice spacings, . Then, we present the first ab-initio lattice QCD calculation of the form factors. Our theoretical results for the decay widths are consistent with and approximately two times more precise than the latest measurements by the ALICE and Belle collaborations. Based on the latest experimental measurements, we independently obtain the quark-mixing matrix element , which is in good agreement with results from other theoretical approaches.

Measurement of the production cross section of prompt {Xi}_{mathrm{c}}^0 baryons at midrapidity in pp collisions at sqrt{s} = 5.02 TeV

The transverse momentum (pT) differential cross section of the charm-strange baryon {Xi}_{mathrm{c}}^0 is measured at midrapidity (|y| < 0.5) via its semileptonic decay into e+Ξ−νe in pp collisions at sqrt{s} = 5.02 TeV with the ALICE detector at the LHC. The ratio of the pT-differential {Xi}_{mathrm{c}}^0 -baryon and D0-meson production cross sections is also reported. The measurements are compared with simulations with different tunes of the PYTHIA 8 event generator, with predictions from a statistical hadronisation model (SHM) with a largely augmented set of charm-baryon states beyond the current lists of the Particle Data Group, and with models including hadronisation via quark coalescence. The pT-integrated cross section of prompt {Xi}_{mathrm{c}}^0 -baryon production at midrapidity is also reported, which is used to calculate the baryon-to-meson ratio {Xi}_{mathrm{c}}^0 /D0 = 0.20 ± 0.04 {left(mathrm{stat}.right)}_{-0.07}^{+0.08} (syst.). These results provide an additional indication of a modification of the charm fragmentation from e+e− and e−p collisions to pp collisions.

Newly discovered $$\Xi _c^{0}$$ resonances and their parameters

The aim of the present article is investigation of the newly observed resonances $\Xi_c(2923)^{0}$, $\Xi_c(2939)^{0}$, and $\Xi_c(2965)^{0}$ which are real candidates to charm-strange baryons. To this end, we calculate the mass and pole residue of the ground-state and excited $1P$ and $2S$ spin-$% 1/2 $ flavor-sextet baryons $\Xi_{c}^{\prime 0}$, $\Xi_{c}^{\prime 0}(1/2^{-})$ and $\Xi_{c}^{\prime 0}(1/2^{+})$ with quark content $csd$, respectively. The masses and pole residues of the ground-state and excited spin-$3/2$ baryons $\Xi_{c}^{\star 0}$ are found as well. Spectroscopic parameters of these particles are computed in the context of the QCD two-point sum rule method. Widths of the excited baryons are evaluated through their decays to final states $\Lambda_{c}^{+}K^{-}$ and $% \Xi_{c}^{\prime 0}\pi$. These processes are explored by means of the full QCD light-cone sum rule method necessary to determine strong couplings at relevant vertices. Obtained predictions for the masses and widths of the four excited baryons, as well as previous results for $1P$ and $2S$ flavor-antitriplet spin-1/2 particles $\Xi_c^{0}$ are confronted with available experimental data on $\Xi_{c}^{0}$ resonances to fix their quantum numbers. Our comparison demonstrates that the resonances $\Xi_c(2923)^{0}$ and $\Xi_c(2939)^{0}$ can be considered as $1P$ excitations of the spin-$1/2$ flavor-sextet and spin-$3/2$ baryons, respectively. The resonance $\Xi _{c}(2965)^{0}$ may be interpreted as the excited $2S$ state of either spin-$% 1/2$ flavor-sextet or antitriplet baryon.

Predicting a new resonance as charmed-strange baryonic analog of Ds0*(2317)

By an unquenched quark model, we predict a charmed-strange baryon state, namely, the $\Omega_{c0}^d(1P,1/2^-)$. Its mass is predicted to be 2945 MeV, which is below the $\Xi_c\bar{K}$ threshold due to the nontrivial coupled-channel effect. So the $\Omega_{c0}^d(1P,1/2^-)$ state could be regraded as the analog of the charmed-strange meson $D_{s0}^*(2317)$. It is a good opportunity for the running Belle II experiment to search for this state in the $\Omega_c^{(*)}\gamma$ mass spectrum experiment in the future.

Theoretical interpretation of Ξc(2970)

The open charm strong decay widths and certain ratio of branching fractions of a charmed strange baryon ${\mathrm{\ensuremath{\Xi}}}_{c}(2970)$ are calculated in a $^{3}{P}_{0}$ model. The results are compatible with the latest experimental data. The theoretical ratio of decay branching fractions $R=\mathcal{B}[{\mathrm{\ensuremath{\Xi}}}_{c}(2970{)}^{+}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Xi}}}_{c}(2645{)}^{0}{\ensuremath{\pi}}^{+}]/\mathcal{B}[{\mathrm{\ensuremath{\Xi}}}_{c}(2970{)}^{+}\ensuremath{\rightarrow}\phantom{\rule{0ex}{0ex}}{\mathrm{\ensuremath{\Xi}}}_{c}^{\ensuremath{'}0}{\ensuremath{\pi}}^{+}]\ensuremath{\approx}1.0$. The spin parity ${J}^{P}=1/{2}^{+}$ and $3/{2}^{+}$ for different assignments are analyzed. From the results of our calculation, ${\mathrm{\ensuremath{\Xi}}}_{c}(2970)$ can be interpreted as a $2S$-wave state with ${J}^{P}({s}_{l})=1/{2}^{+}(0)$. The distinctions between the $2S$-wave ${n}_{\ensuremath{\rho}}$- and ${n}_{\ensuremath{\lambda}}$-excitation states and between states with ${s}_{l}=0$ and ${s}_{l}=1$ and between states with total spin $1/2$ and $3/2({s}_{l}=1)$ are also discussed.

Lattice QCD study of doubly charmed strange baryons

We present the energy spectra of the low lying doubly-charmed baryons using lattice quantum chromodynamics. We precisely predict the ground state mass of the charmed-strange Omega(cc) (1/2+) baryon to be 3712(11)(12) MeV which could well be the next doubly-charmed baryon to be discovered at the LHCb experiment at CERN. We also predict masses of other doubly-charmed strange baryons with quantum numbers 3/2+, 1/2-, and 3/2-.

Evidence of a structure in bar{K}^{0} Lambda _{c}^{+} consistent with a charged Xi _c(2930)^{+}, and updated measurement of bar{B}^{0} rightarrow bar{K}^{0} Lambda _{c}^{+} bar{Lambda }_{c}^{-} at Belle

We report evidence for the charged charmed-strange baryon Xi _{c}(2930)^+ with a signal significance of 3.9sigma with systematic errors included. The charged Xi _{c}(2930)^+ is found in its decay to K_{S}^{0} Lambda _{c}^+ in the substructure of bar{B}^{0} rightarrow K^{0}_{S} Lambda _{c}^{+} bar{Lambda }_{c}^{-} decays. The measured mass and width are [2942.3 pm 4.4 ({mathrm{stat.}}) pm {1.5}({mathrm{syst.}})] MeV/c^{2} and [14.8 pm 8.8({mathrm{stat.}}) pm {2.5}({mathrm{syst.}})] MeV, respectively, and the product branching fraction is mathcal{B}(bar{B}^{0} rightarrow Xi _c(2930)^{+} bar{Lambda }_{c}^{-}) mathcal{B}(Xi _c(2930)^{+}rightarrow bar{K}^{0} Lambda _{c}^{+})=[2.37 pm 0.51 ({mathrm{stat.}})pm 0.31({mathrm{syst.}})]times 10^{-4}. We also measure mathcal{B}(bar{B}^{0} rightarrow bar{K}^{0} Lambda _{c}^{+} bar{Lambda }_{c}^{-}) = [3.99 pm 0.76({mathrm{stat.}}) pm 0.51({mathrm{syst.}})] times 10^{-4} with greater precision than previous experiments, and present the results of a search for the charmonium-like state Y(4660) and its spin partner, Y_{eta }, in the Lambda _{c}^{+}bar{Lambda }_{c}^{-} invariant mass spectrum. No clear signals of the Y(4660) or Y_{eta } are observed and the 90% credibility level (C.L.) upper limits on their production rates are determined. These measurements are obtained from a sample of (772pm 11)times 10^{6} Bbar{B} pairs collected at the Upsilon (4S) resonance by the Belle detector at the KEKB asymmetric energy electron-positron collider.

First measurement of [formula omitted] production in pp collisions at [formula omitted

The production of the charm-strange baryon Ξc0 is measured for the first time at the LHC via its semileptonic decay into eΞ−+νe in pp collisions at s=7 TeV with the ALICE detector. The transverse momentum (pT) differential cross section multiplied by the branching ratio is presented in the interval 1<pT<8 GeV/c at mid-rapidity, |y|<0.5. The transverse momentum dependence of the Ξc0 baryon production relative to the D0 meson production is compared to predictions of event generators with various tunes of the hadronisation mechanism, which are found to underestimate the measured cross-section ratio.

Observation of Xi _{c}(2930)^0 and updated measurement of B^{-} rightarrow K^{-} Lambda _{c}^{+} bar{Lambda }_{c}^{-} at Belle

We report the first observation of the Xi _{c}(2930)^0 charmed-strange baryon with a significance greater than 5sigma . The Xi _{c}(2930)^0 is found in its decay to K^- Lambda _{c}^+ in B^{-} rightarrow K^{-} Lambda _{c}^{+} bar{Lambda }_{c}^{-} decays. The measured mass and width are [2928.9 pm 3.0(mathrm stat.)^{+0.9}_{-12.0}(mathrm syst.)] MeV/c^{2} and [19.5 pm 8.4(mathrm stat.) ^{+5.9}_{-7.9}(mathrm syst.)] MeV, respectively, and the product branching fraction is mathcal{B}(B^{-} rightarrow Xi _{c}(2930)^0 bar{Lambda }_{c}^{-}) mathcal{B}(Xi _{c}(2930)^0 rightarrow K^- Lambda _{c}^{+})=[1.73 pm 0.45(mathrm stat.) pm 0.21(mathrm syst.)]times 10^{-4}. We also measure mathcal{B}(B^{-} rightarrow K^{-} Lambda _{c}^{+} bar{Lambda }_{c}^{-}) = [4.80 pm 0.43(mathrm stat.) pm 0.60(mathrm syst.)] times 10^{-4} with improved precision, and search for the charmonium-like state Y(4660) and its spin partner, Y_{eta }, in the Lambda _{c}^{+}bar{Lambda }_{c}^{-} invariant mass spectrum. No clear signals of the Y(4660) nor its spin partner are observed and the 90% credibility level (C.L.) upper limits on their production rates are determined. These measurements are obtained from a sample of (772pm 11)times 10^{6} Bbar{B} pairs collected at the Upsilon (4S) resonance by the Belle detector at the KEKB asymmetric energy electron–positron collider.

Newly observed Λc(2860)+ at LHCb and its D -wave partners Λc(2880)+ , Ξc(3055)+ and Ξc(3080)+

New resonance $\Lambda_c(2860)^+$, reported by LHCb, is a key to establish \emph{D}-wave charmed and charmed-strange baryon families. In this work, we first carry out an analysis of mass spectra of the $\lambda$-mode excited charmed and charmed-strange baryon states, which may reveal the relation of $\Lambda_c(2860)^+$, $\Lambda_c(2880)^+$, $\Xi_c(3055)^+$ and $\Xi_c(3080)^+$, $i.e.$, $\Lambda_c(2860)^+$ and $\Lambda_c(2880)^+$ can form a \emph{D}-wave doublet $[3/2^+,5/2^+]$ while $\Xi_c(3055)^+$ and $\Xi_c(3080)^+$ are the strange partners of $\Lambda_c(2860)^+$ and $\Lambda_c(2880)^+$, respectively. Further study of their two-body Okubo-Zweig-Iizuka-allowed decays supports $\Lambda_c(2860)^+$ and $\Xi_c(3055)^+$ as the \emph{D}-wave charmed and charmed-strange baryons, respectively, with $J^P=3/2^+$. For $\Lambda_c(2880)^+$ and $\Xi_c(3080)^+$, however, there exist some difficulties under the \emph{D}-wave assignment with $J^P=5/2^+$ since the experimental widths and some ratios of partial width of $\Lambda_c(2880)^+$ and $\Xi_c(3080)^+$ cannot be reproduced in our calculation.

Low-lying charmed and charmed-strange baryon states

In this work, we systematically study the mass spectra and strong decays of 1P and 2S charmed and charmed-strange baryons in the framework of non-relativistic constituent quark models. With the light quark cluster–heavy quark picture, the masses are simply calculated by a potential model. The strong decays are studied by the Eichten–Hill–Quigg decay formula. Masses and decay properties of the well-established 1S and 1P states can be reproduced by our method. Sigma _c(2800)^{0,+,++} can be assigned as a Sigma _{c2}(3/2^-) or Sigma _{c2}(5/2^-) state. We prefer to interpret the signal Sigma _c(2850)^0 as a 2S(1/2^+) state although at present we cannot thoroughly exclude the possibility that this is the same state as Sigma _c(2800)^0. Lambda _c(2765)^+ or Sigma _c(2765)^+ could be explained as the Lambda _c^+(2S) state or Sigma ^+_{c1}(1/2^-) state, respectively. We propose to measure the branching ratio of mathcal {B}(Sigma _c(2455)pi )/mathcal {B}(Sigma _c(2520)pi ) in the future, which may disentangle the puzzle of this state. Our results support Xi _c(2980)^{0,+} as the first radial excited state of Xi _c(2470)^{0,+} with J^P=1/2^+. The assignment of Xi _c(2930)^0 is analogous to Sigma _c(2800)^{0,+,++}, i.e., a Xi ^prime _{c2}(3/2^-) or Xi ^prime _{c2}(5/2^-) state. In addition, we predict some typical ratios among partial decay widths, which are valuable for experimental search for these missing charmed and charmed-strange baryons.

Study of excitedΞcstates decaying intoΞc0andΞc+baryons

Using a data sample of 980 fb(-1) of e(+)e(-) annihilation data taken with the Belle detector operating at the KEKB asymmetric-energy e(+)e(-) collider, we report the results of a study of excited Xi(c) states that decay, via the emission of photons and/or charged pions, into Xi(0)(c) or Xi(+)(c) ground state charmed-strange baryons. We present new measurements of the masses of all members of the Xi(0)(c), Xi(c)(2645), Xi(c)(2790), Xi(c)(2815), and Xi(c)(2980) isodoublets, measurements of the intrinsic widths of those that decay strongly, and evidence of previously unknown transitions.

Studies of charmed strange baryons in theΛDfinal state at Belle

We report the discovery of $\Xi_{c}(3055)^{0}$, observed by its decay into the final state $\Lambda D^{0}$, and present the first observation and evidence of the decays of $\Xi_c(3055)^{+}$ and $\Xi_c(3080)^{+}$ into $\Lambda D^{+}$. We also perform a combined analysis of the $\Lambda D^{+}$ with the $\Sigma_{c}^{++}K^{-}$ and $\Sigma_{c}^{\ast ++}K^{-}$ decay modes to measure the ratios of branching fractions, masses and widths with improved accuracy. We measure the ratios of branching fractions ${\cal B}(\Xi_{c}(3055)^{+} \to \Lambda D^{+})/{\cal B}(\Xi_{c}(3055)^{+} \to \Sigma_{c}^{++}K^{-})=5.09\pm1.01\pm0.76$, ${\cal B}(\Xi_{c}(3080)^{+} \to \Lambda D^{+})/{\cal B}(\Xi_{c}(3080)^{+} \to \Sigma_{c}^{++}K^{-})=1.29\pm0.30\pm0.15$, and ${\cal B}(\Xi_{c}(3080)^{+} \to \Sigma_{c}^{\ast ++}K^{-})/{\cal B}(\Xi_{c}(3080)^{+} \to \Sigma_{c}^{++}K^{-})=1.07\pm0.27\pm0.01$, where the uncertainties are statistical and systematic. The analysis is performed using a 980 fb$^{-1}$ data sample collected with the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$ collider.

Search for doubly charmed baryons and study of charmed strange baryons at Belle

We report results of a study of doubly charmed baryons and charmed strange baryons. The analysis is performed using a 980 fb^-1 data sample collected with the Belle detector at the KEKB asymmetric-energy e^+e^- collider. We search for doubly charmed baryons Xi_cc^+(+) with the Lambda_c^+K^-pi^+(pi^+) and Xi_c^0pi^+(pi^+) final states. No significant signal is observed. We also search for two excited charmed strange baryons, Xi_c(3055)^+ and Xi_c(3123)^+ with the Sigma_c^++(2455)K^- and Sigma_c^++(2520)K^- final states. The Xi_c(3055)^+ signal is observed with a significance of 6.6 standard deviations including systematic uncertainty, while no signature of the Xi_c(3123)^+ is seen. We also study properties of the Xi_c(2645)^+ and measure a width of 2.6 +- 0.2 (stat) +- 0.4 (syst) MeV/c^2, which is the first significant determination.

Study of excited charm-strange baryons with evidence for new baryonsΞc(3055)+andΞc(3123)+

We present a study of excited charm-strange baryon states produced in $e^+e^-$ annihilations at or near a center-of-mass energy of $10.58\mathrm{Ge\kern -0.1em V}$, in a data sample with an integrated luminosity of $384 fb^{-1}$ recorded with the BABAR detector at the PEP-II $e^+e^-$ storage rings at the Stanford Linear Accelerator Center. We study strong decays of charm-strange baryons to $\Lambda_c^+K^0_{\scriptscriptstyle S}$, $\Lambda_c^+K^-$, $\Lambda_c^+K^-\pi^+$, $\Lambda_c^+K^0_{\scriptscriptstyle S}\pi^-$, $\Lambda_c^+K^0_{\scriptscriptstyle S}\pi^-\pi^+$, and $\Lambda_c^+K^-\pi^+\pi^-$. This study confirms the existence of the states $\Xi_c(2980)^+$, $\Xi_c(3077)^+$, and $\Xi_c(3077)^0$, with a more accurate determination of the $\Xi_c(2980)^+$ mass and width. We also present evidence for two new states, $\Xi_c(3055)^+$ and $\Xi_c(3123)^+$, decaying through the intermediate resonant modes $\Sigma_c(2455)^{++}K^-$ and $\Sigma_c(2520)^{++}K^-$, respectively. For each of these baryons, we measure the yield in each final state, determine the statistical significance, and calculate the product of the production cross-section and branching fractions. We also measure the masses and widths of these excited charm-strange baryons.