<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:msup><mml:mi>Σ</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:mi>p</mml:mi></mml:math> elastic scattering cross sections in the region of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si2.gif" overflow="scroll"><mml:mn>350</mml:mn><mml:mo>⩽</mml:mo><mml:msub><mml:mi>P</mml:mi><mml:msup><mml:mi>Σ</mml:mi><mml:mo>+</mml:mo></mml:msup></mml:msub><mml:mo>⩽</mml:mo><mml:mn>750</mml:mn><mml:mtext> </mml

Ahn, J. K.; Akikawa, H.; Arvieux, J.; Bassalleck, B.; Chung, M.; En’yo, H.; Fukuda, T.; Funahashi, H.; Golovkin, S.V.; Gorin, A.; Goto, Y.; Hanabata, Makoto; Hayakawa, T.; Ichikawa, A. K.; Ieiri, M.; Ishino, M.; Kanda, H.; Kim, Y. D.; Kondō, Y.; Kozarenko, E.; Kreslo, I.; Lee, J. M.; Masaike, A.; Mihara, S.; Nakai, K.; Nakazawa, K.; Ozawa, K.; Sato, Akira; Sato, H.; Sim, K. S.; Tabaru, T.; Takéutchi, F.; Tlustý, P.; Torii, H.; Yamamoto, K.; Yokkaichi, S.; Yoshida, Mitsuo

doi:10.1016/j.nuclphysa.2005.07.004

Cited by 36 publications

(9 citation statements)

References 37 publications

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“…The amount of data available for nucleonnucleon scattering [1] is enough to build satisfactory models of nuclear forces, either purely phenomenological or built on the basis of an effective field theory [2][3][4][5][6][7][8]. In the hyperon-nucleon sector, much less data are available [9][10][11], and almost nothing is known about the hyperonhyperon interaction. The main reasons of this lack of information are the instability of hyperons in the vacuum and the impossibility of collecting hyperon-neutron and hyperon-hyperon scattering data.…”

Section: Introductionmentioning

confidence: 99%

Accurate determination of the interaction betweenΛhyperons and nucleons from auxiliary field diffusion Monte Carlo calculations

2014

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Background: An accurate assessment of the hyperon-nucleon interaction is of great interest in view of recent observations of very massive neutron stars. The challenge is to build a realistic interaction that can be used over a wide range of masses and in infinite matter starting from the available experimental data on the binding energy of light hypernuclei. To this end, accurate calculations of the hyperon binding energy in a hypernucleus are necessary.Purpose: We present a quantum Monte Carlo study of Λ and ΛΛ hypernuclei up to A = 91. We investigate the contribution of two-and three-body Λ-nucleon forces to the Λ binding energy.Method: Ground state energies are computed solving the Schrödinger equation for non-relativistic baryons by means of the auxiliary field diffusion Monte Carlo algorithm extended to the hypernuclear sector. Results:We show that a simple adjustment of the parameters of the ΛN N three-body force yields a very good agreement with available experimental data over a wide range of hypernuclear masses. In some cases no experiments have been performed yet, and we give new predictions.Conclusions: The newly fitted ΛN N force properly describes the physics of medium-heavy Λ hypernuclei, correctly reproducing the saturation property of the hyperon separation energy.

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Section: Introductionmentioning

confidence: 99%

Accurate determination of the interaction betweenΛhyperons and nucleons from auxiliary field diffusion Monte Carlo calculations

2014

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“…Experimental data of the YN scatterings are, historically, rare, owing to the experimental difficulties regarding the short lifetime of hyperons [24][25][26][27][28][29][30][31][32]. For the intermediate energy, two experiments to measure the differential cross sections of the + p channel have been conducted [32,33]. However, no conclusions could be drawn on the repulsive nature owing to the insufficient precision of the studies stemming from low statistics.…”

Section: Strangenessmentioning

confidence: 99%

Measurement of differential cross sections for Σ+p elastic scattering in the momentum range 0.44–0.80 GeV/c

Nanamura

Miwa

Ahn

et al. 2022

Progress of Theoretical and Experimental Physics

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We performed a novel Σ+p scattering experiment at the J-PARC Hadron Experimental Facility. Approximately 2400 Σ+p elastic scattering events were identified from 4.9 × 107 tagged Σ+ particles in the Σ+ momentum range 0.44–0.80 GeV/c. The differential cross sections of the Σ+p elastic scattering were derived with much better precision than in previous experiments. The obtained differential cross sections were approximately 2 mb/sr or less, which were not as large as those predicted by the fss2 and FSS models based on the quark cluster model in the short-range region. By performing phase-shift analyses for the obtained differential cross sections, we experimentally derived the phase shifts of the 3S1 and 1P1 channels for the first time. The phase shift of the 3S1 channel, where a large repulsive core was predicted owing to the Pauli effect between quarks, was evaluated as $20^\circ \lt |\delta _{^3S_1}|\lt 35^\circ$. If the sign of $\delta _{^3S_1}$ is assumed to be negative, the interaction in this channel is moderately repulsive, as the Nijmegen extended-sort-core models predicted.

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“…The systematic error is estimated to be a quadratic sum of the error from the background estimation, averaged efficiency, and Σ + total flight length. The values of the differential cross sections and their uncertainties are summarized in Tables D1, D2, and D3 in Appendix D. For the lower two-momentum regions, past measurements at KEK, KEK E251 [33] and KEK E289 [32], are also plotted in Fig. 18 as the red boxes and blue triangles.…”

Section: Differential Cross Sectionsmentioning

confidence: 99%

“…Historically, in the The error bars and boxes show the statistical and systematic uncertainties, respectively. The red boxes and blue triangles represent the data of past measurements, KEK E251 [33] and KEK E289 [32], respectively. The blue dotted and dot-dashed lines show the calculations by FSS and fss2 [6], respectively.…”

Section: Comparison With Theoretical Calculationsmentioning

confidence: 99%

“…As for the experimental situation of the Y N scatterings, historically, the Y N scattering data are considerably scarce because of the experimental difficulties caused by the short lifetime of hyperons [24][25][26][27][28][29][30][31][32]. In the intermediate energy, two experiments have been performed [32,33] to measure the differential cross sections of the Σ + p channel. They could not draw any conclusion on the repulsive nature because of the insufficient accuracy stemming from low statistics.…”

Section: Introductionmentioning

confidence: 99%

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Measurement of differential cross sections of the $Σ^+p$ elastic scattering in momentum range of 0.44-0.80 GeV/c

Nanamura¹,

Miwa²,

Ahn³

et al. 2022

Preprint

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We performed a novel Σp scattering experiment at the J-PARC hadron experimental facility. Approximately 2400 Σ + p elastic scattering events were identified by requesting the kinematical consistency of the elastic scattering from 4.9 × 10 7 tagged Σ + beam particles in the Σ + momentum range of 0.44 -0.80 GeV/c. The differential cross sections of the Σ + p elastic scattering were derived with much better precision compared to past experiments. The obtained values of differential cross sections are around 2 mb/sr, which are not so large as most theoretical predictions. Moreover, the phase shifts of 3 S 1 and 1 P 1 channels were experimentally derived for the first time. The phase shift of the 3 S 1 channel wherein a large repulsive core was predicted owing to the Pauli effect in the quark level was evaluated to be 20 • < |δ3 S1 | < 35 • . If the sign is assumed to be negative, the strength of the interaction in this channel was found to be moderately repulsive.

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Σ+p elastic scattering cross sections in the region of 350⩽PΣ+⩽750

Cited by 36 publications

References 37 publications

Accurate determination of the interaction betweenΛhyperons and nucleons from auxiliary field diffusion Monte Carlo calculations

Accurate determination of the interaction betweenΛhyperons and nucleons from auxiliary field diffusion Monte Carlo calculations

Measurement of differential cross sections for Σ+p elastic scattering in the momentum range 0.44–0.80 GeV/c

Measurement of differential cross sections of the $Σ^+p$ elastic scattering in momentum range of 0.44-0.80 GeV/c

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