Isospin decomposition of the basic double-pionic fusion in the region of the ABC effect

Adlarson, P.; Augustyniak, W.; Bardan, W.; Bashkanov, M.; Bednarski, T.; Bergmann, F. S.; Berłowski, M.; Bhatt, H.; Büscher, M.; Calén, H.; Clement, H.; Coderre, D.; Czerwiński, E.; Demmich, K.; Doroshkevich, E.; Engels, R.; Erven, W.; Eyrich, W.; Fedorets, P.; Föhl, K.; Fransson, K.; Goldenbaum, F.; Goslawski, P.; Goswami, A.; Grigoryev, K.; Gullström, C.–O.; Hauenstein, F.; Heijkenskjöld, L.; Hejny, V.; Hinterberger, F.; Hodana, M.; Höistad, B.; Jany, A.; Jany, Benedykt R.; Jarczyk, L.; Johansson, T.; Kamys, B.; Kemmerling, G.; Khan, Farha; Khoukaz, A.; Kistryn, S.; Klaja, J.; Kleines, H.; Kłos, B.; Krapp, M.; Krzemień, W.; Kulessa, P.; Kupść, A.; Lalwani, K.; Lersch, D.; Li, L.; Lorentz, B.; Magiera, A.; Maier, R.; Marciniewski, P.; Mariański, B.; Mikirtychiants, M.; Morsch, H. P.; Moskal, P.; Nandi, B. K.; Niedźwiecki, Szymon; Ohm, H.; Ozerianska, I.; Río, E. Pérez del; Pluciński, P.; Podkopał, P.; Prasuhn, D.; Pricking, A.; Pszczel, D.; Pysz, K.; Pyszniak, A.; Redmer, C. F.; Ritman, J.; Roy, A.; Rudy, Z.; Sawant, S.; Schadmand, S.; Schmidt, Axel; Sefzick, T.; Serdyuk, V.; Shah, Nausheen R.; Siemaszko, M.; Siudak, R.; Skorodko, T.; Skurzok, M.; Smyrski, J.; Sopov, V.; Stassen, R.; Steṕaniak, J.; Stephan, E.; Sterzenbach, G.; Stockhorst, H.; Ströher, H.; Szczurek, Antoni; Tolba, T.; Trzciński, A.; Varma, R.; Vlasov, P.; Wagner, G. J.; Wȩglorz, W.; Wolke, M.; Wrońska, A.; Wüstner, P.; Wurm, P.; Yamamoto, A.; Yuan, X.; Yurev, L.; Zabierowski, J.; Zheng, C.; Zieliński, Marcin; Zipper, W.; Złomańczuk, J.; Żuprański, P.; Żurek, M.

doi:10.1016/j.physletb.2013.03.019

Cited by 122 publications

(71 citation statements)

References 17 publications

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“…[26] data, the systematic uncertainties related to the σ tot extraction are expected to be suppressed. 5 To ensure smoothness we have used a Discrete Gaussian Sampling method to model a smooth a l energy dependence. This comprised 3 Gaussians with centroids at 420, 520 and 620 MeV, widths of 100 MeV with arbitrary strength.…”

Section: Resultsmentioning

confidence: 99%

“…Despite its importance, the world data set for deuteron photodisintegation contains significant gaps in terms of photon energy coverage, angular coverage, and particularly in measurements of polarization observables. The situation has become more critical following the recent exciting indications for the discovery of the first exotic hexaquark -the d * (2380) with quantum numbers I(J P ) = 0(3 + ) [3,4,5,6,7,8,9,10]. With such quantum numbers, the d * (2380) can be produced on deuterium with photon beams of fairly moderate energy (E γ ≈ 570 MeV) [11].…”

Section: Introductionmentioning

confidence: 99%

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Deuteron photodisintegration by polarized photons in the region of the d⁎(2380)

et al. 2019

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Deuteron photodisintegration by polarized photons in the region of the d⁎(2380)

et al. 2019

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“…In this letter we present a new possibility for light-quark based DM, motivated by the recent discovery of the d * (2380) hexaquark. The properties of the d * (2380) have been established in recent years following its first experimental observation [5,6,7,8,9,10,11,12,13]. It has a mass of M d * = 2380 MeV, vacuum width Γ = 70 MeV and quantum numbers I(J P ) = 0(3 + ) and made of six light quarks; 3 u-quarks and 3 d-quarks.…”

Section: Introductionmentioning

confidence: 99%

A new possibility for light-quark dark matter

Bashkanov¹,

Watts²

2020

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

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Despite many decades of study the physical origin of "dark matter" in the Universe remains elusive. In this letter we calculate the properties of a completely new dark matter candidate -Bose-Einstein condensates formed from a recently discovered bosonic particle in the light-quark sector, the d * (2380) hexaquark. In this first study, we show stable d * (2380) Bose-Einstein condensates could form in the primordial early universe, with a production rate sufficiently large that they are a plausible new candidate for dark matter. Some possible astronomical signatures of such dark matter are also presented.

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“…Recently, we studied the role of a new degree of freedom d * (2380) (Bashkanov et al (2019)) on the nuclear EoS ). The d * (2380) is a massive positively charged non-strange particle with integer spin (J=3) and it represents the first known non-trivial hexaquark evidenced in experiment (Adlarson et al (2011(Adlarson et al ( , 2013(Adlarson et al ( , 2014). The importance of such a new degree-offreedom resides in the fact that it has the same u, d quark composition as neutrons and protons and, therefore, does not involve any strangeness degrees of freedom.…”

Section: Introductionmentioning

confidence: 99%

Neutron star matter equation of state including d^*-hexaquark degrees of freedom

Mantziris

Pastore

Vidaña³

et al. 2020

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We present an extension of a previous work where, assuming a simple free bosonic gas supplemented with a relativistic meand field model to describe the pure nucleonic part of the EoS, we studied the consequences that the first non-trivial hexaquark d * (2380) could have on the properties of neutron stars. Compared to that exploratory work we employ a standard non-linear Walecka model including additional terms that describe the interaction of the d * (2380) di-baryon with the other particles of the system through the exchange of σand ω-meson fields. Our results have show that the presence of the d * (2380) leads to maximum masses compatible with the recent observations of ∼ 2M ⊙ millisecond pulsars if the interaction of the d * (2380) is slightly repulsive or the d * (2380) does not interacts at all. An attractive interaction makes the equation of state too soft to be able to support a 2M ⊙ neutron star whereas an extremely repulsive one induces the collapse of the neutron star into a black hole as soon as the d * (2380) appears.

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Isospin decomposition of the basic double-pionic fusion in the region of the ABC effect

Cited by 122 publications

References 17 publications

Deuteron photodisintegration by polarized photons in the region of the d⁎(2380)

Deuteron photodisintegration by polarized photons in the region of the d⁎(2380)

A new possibility for light-quark dark matter

Neutron star matter equation of state including d^*-hexaquark degrees of freedom

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Isospin decomposition of the basic double-pionic fusion in the region of the ABC effect

Cited by 122 publications

References 17 publications

Deuteron photodisintegration by polarized photons in the region of the d⁎(2380)

Deuteron photodisintegration by polarized photons in the region of the d⁎(2380)

A new possibility for light-quark dark matter

Neutron star matter equation of state including d*-hexaquark degrees of freedom

Contact Info

Product

Resources

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Neutron star matter equation of state including d^*-hexaquark degrees of freedom