Room for an<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>S</mml:mi><mml:mo>=</mml:mo><mml:mo>+</mml:mo><mml:mn>1</mml:mn></mml:mrow></mml:math>pentaquark in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mi>K</mml:mi><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>-nucleus phenomenology

Gal, A.; Friedman, E.

doi:10.1103/physrevc.73.015208

Cited by 11 publications

(16 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[126] considered the interaction of the K + with the pion cloud of the nucleus, leading to a significant improvement of the differential and total K + nuclear cross sections. Alternatively, substantially improved fits to the data were achieved by incorporating the absorption of K + by nucleon pairs via the inclusion of the Θ + (1540) pentaquark [124,127,128], although the evidence of the pentaquark has faded away in the last years. An alternative way to determine the kaon optical potential is to analyze the formation and propagation of kaons in the dense medium created in pion-nucleus, proton-nucleus or nucleus-nucleus collisions for intermediate beam kinetic energies (GeV).…”

Section: Theoretical Approaches For Kaons In Mattermentioning

confidence: 99%

Strangeness in nuclei and neutron stars

Tolós

Fabbietti

2020

Progress in Particle and Nuclear Physics

189

View full text Add to dashboard Cite

We review the present status of the experimental and theoretical developments in the field of strangeness in nuclei and neutron stars. We start by discussing theKN interaction, that is governed by the presence of the Λ(1405). We continue by showing the two-pole nature of the Λ(1405), and the production mechanisms in photon-, pion-, kaon-induced reactions as well as proton-proton collisions, while discussing the formation ofKN N bound states. We then move to the theoretical and experimental analysis of the properties of kaons and antikaons in dense nuclear matter, paying a special attention to kaonic atoms and the analysis of strangeness creation and propagation in nuclear collisions. Next, we examine the φ meson and the advances in photoproduction, protoninduced and pion-induced reactions, so as to understand its properties in dense matter. Finally, we address the dynamics of hyperons with nucleons and nuclear matter, and the connection to the phases of dense matter with strangeness in the interior of neutron stars.

show abstract

Section: Theoretical Approaches For Kaons In Mattermentioning

confidence: 99%

Strangeness in nuclei and neutron stars

Tolós

Fabbietti

2020

Progress in Particle and Nuclear Physics

189

View full text Add to dashboard Cite

show abstract

“…This fact has been useful for probing the possible changes in nucleon structure and/or K + N interaction in the nuclear medium [1, 2, 3, 4, 5,6,7,8]. Following the measurement of the ratio of total cross sections [4,5], a number of suggestions were made to explain the results, among the principal ones being a partial deconfinement of quarks, an interaction with exchanged mesons in the nucleus and a modification of the K + N interaction through exchanged mesons.…”

Section: Introductionmentioning

confidence: 99%

Partial-wave analysis ofK+-nucleon scattering

Gibbs

Arceo

2007

Phys. Rev. C

View full text Add to dashboard Cite

We have performed a partial-wave analysis of K + -nucleon scattering in the momentum range from 0 to 1.5 GeV/c addressing the uncertainties of the results and comparing them with several previous analyses. It is found that the treatment of the reaction threshold behavior is particularly important. We find a T=0 scattering length which is not consistent with zero, as has been claimed by other analyses. The T=0 phase shifts for ℓ > 0 are consistent with a pure spin-orbit potential. Some indications for the production of a T=0 pentaquark with spin-parity D5/2+ are discussed.

show abstract

“…The narrow width pentaquark has also been discussed in the K + -nucleus cross section in Refs. [40,41]. We find also that the driving force to form the KN resonance is attractive contribution from the next-toleading order terms, while the leading order Weinberg-Tomozawa term is null for the KN channel with I = 0.…”

Section: Unitarized Amplitude and Possible Resonance In I =mentioning

confidence: 60%

K +–nucleus elastic scattering revisited from the perspective of partial restoration of chiral symmetry

Aoki

2017

Progress of Theoretical and Experimental Physics

View full text Add to dashboard Cite

The K + meson properties in the nuclear medium are investigated by considering the wavefunction renormalization as a first step to reveal the in-medium properties of the K + meson in the context of partial restoration of chiral symmetry. The K + N elastic scattering amplitude is constructed using chiral perturbation theory up to the next-to-leading order. Using the constructed amplitude, we calculate the wavefunction renormalization in the Thomas-Fermi approximation. We obtained a good description of the K + N elastic scattering amplitude. The obtained wavefunction renormalization factor suggests the 2 to 6% enhancement of the K + N interaction at the saturation density. We conclude that the wavefunction renormalization could be one of the important medium effects for the K + meson.

show abstract

Room for anS=+1pentaquark inK+-nucleus phenomenology

Cited by 11 publications

References 31 publications

Strangeness in nuclei and neutron stars

Strangeness in nuclei and neutron stars

Partial-wave analysis ofK+-nucleon scattering

K +–nucleus elastic scattering revisited from the perspective of partial restoration of chiral symmetry

Contact Info

Product

Resources

About