Pentaquark<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mi>Θ</mml:mi><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>in nuclear matter and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mi>Θ</mml:mi><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>hypernuclei

Shen, Hong; Toki, H.

doi:10.1103/physrevc.71.065208

Cited by 19 publications

(39 citation statements)

References 16 publications

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“…In fact, the study of the in-medium properties of + has been a hot topic for nuclear physicists [33][34][35][36][37]. Since Miller predicted an attractive + nuclear interaction that is strong enough to bind + in a nucleus [33], Cabrera et al…”

Section: Introductionmentioning

confidence: 99%

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In-medium properties ofΘ+as a KπN structure in relativistic mean field theory

Zhong¹,

Peng²,

Ning³

2005

Phys. Rev. C

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The properties of nuclear matter are discussed with the relativistic mean-field (RMF) theory. Then, we use two models in studying the in-medium properties of + : A pointlike + in the usual RMF and a KπN structure for the pentaquark. It is found that the in-medium properties of + are dramatically modified by its internal structure. The effective mass of + in medium is, at normal nuclear density, about 1030 MeV in the pointlike model, whereas it is about 1120 MeV in the KπN pentaquark model. The nuclear potential depth of + in the KπN model is approximately −37.5 MeV, much shallower than −90 MeV in the usual pointlike RMF model.

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Section: Introductionmentioning

confidence: 99%

“…Other investigations also show attractions; for example, the QCD sum rules give an attractive + potential of 40−90 MeV [36], and the quark mean-field model provides an attractive potential of about 50 MeV [37].…”

Section: Introductionmentioning

confidence: 99%

In-medium properties ofΘ+as a KπN structure in relativistic mean field theory

Zhong¹,

Peng²,

Ning³

2005

Phys. Rev. C

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“…A more general hadronic SU(3) approach allows for U(Θ + ) = −60 to −120 MeV if including coupling to two-meson channels [24]. Finally, a quark-mean field model favours U(Θ + ) ≈ −50 MeV [25]. Interestingly, the presence of the Θ + in reactions of kaons with nuclei can explain the long-standing puzzle of its missing reactivity which was put forward by Gal and Friedman [19] and outlined in detail within a coupled-channel calculation by Tolos, Cabrera, Ramos, and Polls [26].…”

Section: Pentaquarks In the Medium: θ + Hyponuclei?mentioning

confidence: 99%

Strange exotic states and compact stars

Sagert¹,

Wietoska²,

Schaffner-Bielich³

2006

J. Phys. G: Nucl. Part. Phys.

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Abstract. We discuss the possible appearance of strange exotic multi-quark states in the interior of neutron stars and signals for the existence of strange quark matter in the core of compact stars. We show how the in-medium properties of possible pentaquark states are constrained by pulsar mass measurements. The possibility of generating the observed large pulsar kick velocities by asymmetric emission of neutrinos from strange quark matter in magnetic fields is outlined.

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“…In recent months many works have been dedicated to the calculation of pentaquark properties [4][5][6][7][8], a theoretical pioneer work is the one that classified a narrow strange pentaquark with positive parity as the lowest state of an SU(3) decuplet within a chiral soliton model [9].…”

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confidence: 99%