Further study on the production of P-wave doubly heavy baryons from Z-boson decays

Abstract

In this paper, we carried out a systematic investigation for the excited doubly heavy baryons production in $Z$-boson decays within the NRQCD factorization approach. Our investigation accounts for all the $P$-wave intermediate diquark states, {\it i.e.} $⟨cc⟩{[}^1{P}_1{]}_{\bar{3}}$, $⟨cc⟩{[}^3{P}_J{]}_6$, $⟨bc⟩{[}^1{P}_1{]}_{\bar{3}/6}$, $⟨bc⟩{[}^3{P}_J{]}_{\bar{3}/6}$, $⟨bb⟩{[}^1{P}_1{]}_{\bar{3}}$, and $⟨bb⟩{[}^3{P}_J{]}_6$ with $J=(0,1,2)$. The results show that contributions from all diquark states in $P$-wave were $7\%$, $8\%$, and $3\%$ in comparing with $S$-wave for the production of ${\Xi }_{cc}$, ${\Xi }_{bc}$ and ${\Xi }_{bb}$ via $Z$-boson decay, respectively. Based on these results, we predicted about $0.539\times 10^3(10^6)$ events for ${\Xi }_{cc}$, $1.827\times 10^3(10^6)$ events for ${\Xi }_{bc}$, and $0.036\times 10^3(10^6)$ events for ${\Xi }_{bb}$ can be produced annually at the LHC (CEPC). Additionally, we plot the differential decay widths of ${\Xi }_{cc}$, ${\Xi }_{bc}$ and ${\Xi }_{bb}$ as a function of the invariant mass $s_{23}$ and energy function $z$ distributions, and analyze the theoretical uncertainties in decay width arising from the mass parameters of heavy quark.

11 pages, 4 figures, matches published version in PLB

References in corpus (20)

• Observation of the doubly charmed baryon ${\Xi }_{cc}^{++}$
• Search for the doubly heavy baryons ${\Omega }_{bc}^0$ and ${\Xi }_{bc}^0$ decaying to ${\Lambda }_c^{+}{\pi }^{-}$ and ${\Xi }_c^{+}{\pi }^{-}$
• Production of $B_c$ or ${\bar{B}}_c$ meson and its excited states via $\bar{t}$-quark or $t$-quark decays
• Hadronic Production of the Doubly Heavy Baryon ${\Xi }_{bc}$ at LHC
• Doubly Heavy Baryon Production at A High Luminosity $e^{+}{e}^{-}$ Collider
• Further Study on the Doubly Heavy Baryon Production around the $Z^0$ Peak at A High Luminosity $e^{+}{e}^{-}$ Collider
• Doubly Heavy Baryon Production at γγCollider
• Uncertainties in Estimating the Indirect Production of $B_c$ and Its Excited States Via Top Quark Decays at CERN LHC
• Pair double heavy diquark production in high energy proton-proton collisions
• Production of the Doubly Heavy Baryons, $B_c$ Meson and the All-charm Tetraquark at AFTER@LHC with Double Intrinsic Heavy Mechanism
• Production of doubly heavy baryons via Higgs boson decays
• Excited Heavy Quarkonium Production via Z^0 Decays at a High Luminosity Collider
• Excited doubly heavy baryon production via $W^{+}$ boson decays
• Lambda_c^+/Lambda_c^- and Lambda_b^0/\bar{Lambda}_b^0 production asymmetry at the LHC from heavy quark recombination
• Quark-hadron duality and production of charmonia and doubly charmed baryons in e+e- annihilation
• The Production of ${\Xi }_{bb}$ at Photon Collider
• Doubly heavy baryon production at polarized photon collider
• News & Views on a new search for the doubly charmed baryon ${\Xi }_{cc}^{+}$ at the LHC
• Excited doubly heavy baryons production via Higgs decays
• Excited doubly heavy baryons production via top-quark decays