Observation of a near-threshold enhancement in the 
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 mass spectrum from 
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doi:10.1103/physrevd.104.052006

Cited by 15 publications

(2 citation statements)

References 52 publications

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“…Since 𝑒 + 𝑒 − → 𝜙Λ Λ has a final state that contains strange and anti-strange quarks, the [𝑐𝑠] [ c s] state should decay to this final state. Figure 1b shows the measured cross section values for this process, and it is the first observation of this process between 3.51 and 4.6 GeV [14]. Due to the large statistical uncertainties, the structure of the cross section cannot be investigated.…”

Section: Pos(panic2021)183mentioning

confidence: 99%

Recent XYZ studies at BESIII

Imoehl¹

2022

Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021)

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Section: Pos(panic2021)183mentioning

confidence: 99%

Recent XYZ studies at BESIII

Imoehl¹

2022

Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021)

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“…A strong energy dependence of the cross sections of baryon-antibaryon and meson-antimeson pair production has been observed in many processes near the thresholds of the corresponding reactions. Some of these processes are e + e − → pp [1][2][3][4][5][6][7][8], e + e − → nn [9][10][11], e + e − → Λ (c) Λ(c) [12][13][14][15], e + e − → B B [16], and e + e − → φΛ Λ [17]. This anomalous behavior can naturally be explained by small relative velocities of the produced particles.…”

Section: Introductionmentioning

confidence: 99%

$N\bar{N}$ production in $e^{+}e^{-}$ annihilation near the threshold revisited

Milstein¹,

Salnikov²

2022

Preprint

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Production of pp and nn pairs in e + e − annihilation near the threshold of the process is discussed with account for the new experimental data appeared recently. Since a significant part of these new data was obtained at energies noticeably exceeding the threshold, we also take into account the form factor describing the amplitude of N N pair production at small distances. The effective optical potential, which describes a sharp dependence of the N N production cross sections near the threshold, consists of the central potential for S and D waves and the tensor potential. These potentials differ for the states with isospin I = 0 and I = 1 of N N pair. The optical potential describes well N N scattering phases, the cross sections of pp and nn production in e + e − annihilation near the threshold, the electromagnetic form factors GE and GM for protons and neutrons, as well as the cross sections of the processes e + e − → 6π and e + e − → K + K − π + π − .

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Final-state interaction in the process e+e−→ΛcΛ¯c

Milstein

Salnikov

2022

Phys. Rev. D

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Observation of a near-threshold enhancement in the ΛΛ¯ mass spectrum from e+e−

Cited by 15 publications

References 52 publications

Recent XYZ studies at BESIII

Recent XYZ studies at BESIII

$N\bar{N}$ production in $e^{+}e^{-}$ annihilation near the threshold revisited

Final-state interaction in the process e+e−→ΛcΛ¯c

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