<i>Λ</i>-nucleus single-particle potentials

Millener, D.J.; Dover, C.B.; Gal, A.

doi:10.1103/physrevc.38.2700

Cited by 368 publications

(383 citation statements)

References 37 publications

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“…These are comparable for U Λ at LO and NLO, but noticeably reduced for U Σ at NLO. The predictions for U Λ (0) are well in line with the 'empirical' value for the Λ binding energy in nuclear matter of about -27 to -30 MeV, deduced from the binding energies of finite Λ hypernuclei [12].…”

Section: The Y N Interaction In Chiral Eftsupporting

confidence: 65%

Hyperon–Nucleon Interaction in Chiral Effective Field Theory

Haidenbauer

2013

Few-Body Syst

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Section: The Y N Interaction In Chiral Eftsupporting

confidence: 65%

Hyperon–Nucleon Interaction in Chiral Effective Field Theory

Haidenbauer

2013

Few-Body Syst

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“…9 4 and m i / m A = 0 . 8 9 , respectively, which is higher than the value obtained from phenomenological fits to the single-A particle energies of about m i /m, -0.80 [35]. However, even this value can be reproduced within the RMFM by employing a coupling constant a = 0 .…”

Section: Single-a Hypernuclei In the Rmfmcontrasting

confidence: 38%

Metastable Exotic Multihypernuclear Objects

Schaffner¹,

Dover²,

Stoecker³

et al. 1994

NATO ASI Series

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Relativistic heavy ion collisions constitute a prolific source of hyperons: tens of hyperons per event are predicted at energies E 1 10 GeV/nucleon, providing a scenario for the formation of metastable exotic multihypernuclear objects. They may exhibit exceptional properties: bound neutral (e.g., 4 M : l , ''M&, pure A droplets, 8 A ) and even negatively charged composites objects with positive baryon number ie.g., 4~: 2 -, 6M2" 2A25 ) could be formed in rare events. Such negative nuclei can easily be identified in a magnetic spectrometer. They could be considerably more abundant than antinuclei of the same A. We use the relativistic meson-baryon field theory-which gives an excellent description of normal nuclear and single-A hypernuclear properties-to calculate the rich spectrum of such exotic objects, their stability, and their structure. We also find solutions for a large variety of bound short-lived nuclei (e.g., 8~2~2 "2 n , 2 n P ), which may decay strongly via formation of cascade ( E ) particles. Multi-E hypernuclei are also evaluated. A variety of potential candidates for such metastable exotic nuclei is presented. It turns out that the properties of such exotic multihypernuclear objects reveal quite similar features as the strangelet proposed as a unique signature for quark-gluon plasma formation in heavy ion collisions. PACS numberis): 25.75. +r, 21.80. + a

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“…The hyperons such as Λ 0 (1116), Σ −,0,+ (1193) and Ξ −,0 (1318) appear at the expense of nucleons and forms a sizeable population in the density region of current interest. Although hypernuclei experiments [16] supports the presence of hyperons in dense matter, however this domain is also marred by uncertainties revolving around the nature of hyperon-hyperon interactions and their coupling strengths. Since they are the dominant species in the dense matter population, there is even greater need to understand the nature and behavior of these interactions.…”

Section: Introductionmentioning

confidence: 99%

Attributes of a rotating neutron star with a hyperon core

2008

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We study the effect of rotation on global properties of neutron star with a hyperon core in an effective chiral model with varying nucleon effective mass within a mean field approach. The resulting gross properties of the rotating compact star sequences are then compared and analyzed with other theoretical predictions and observations from neutron stars. The maximum mass of the compact star predicted by the model lies in the range (1.4 − 2.4) M⊙ at Kepler frequency ΩK , which is consistent with recent observation of high mass stars thereby reflecting the sensitivity of the underlying nucleon effective mass in the dense matter EoS. We also discuss the implications of the experimental constraints from the flow data from heavy-ion collisions on the global properties of the rotating neutron stars.

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Λ-nucleus single-particle potentials

Cited by 368 publications

References 37 publications

Hyperon–Nucleon Interaction in Chiral Effective Field Theory

Hyperon–Nucleon Interaction in Chiral Effective Field Theory

Metastable Exotic Multihypernuclear Objects

Attributes of a rotating neutron star with a hyperon core

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