A (p/E) calculation of strong pionic decays of baryons

Cano, F.; González, P.; Desplanques, B.; Noguera, S.

doi:10.1007/s002180050407

Cited by 11 publications

(13 citation statements)

References 10 publications

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“…∆m 15,bol values range from 0.20 to 1.37 mag, with SNe Ic making up the extremes of this distribution. The possibility of a Phillips-type relation for GRB-SNe, suggested by Schulze et al (2014) and independently confirmed by Cano (2014); Li & Hjorth (2014), is evident here for the bolometric light curves of the majority of the SNe Ic-BL sample.…”

Section: Discussionsupporting

confidence: 74%

“…(1) Utrobin (1994); (2) Sahu et al 2009;2009bb, Pignata et al 2011, although strong radio emission suggests the presence of relativistic material in this SN, Soderberg et al 2010). The standardising of GRB-SN light curves has been further studied by Cano (2014); Li & Hjorth (2014), who indeed find relations based on light curve properties to allow their cosmological use, confirming the indications from the relatively cruder analyses in Schulze et al (2014) and here.…”

Section: Bolometric Light Curvesmentioning

confidence: 99%

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Bolometric light curves and explosion parameters of 38 stripped-envelope core-collapse supernovae

Lyman

Bersier

James

et al. 2016

Mon. Not. R. Astron. Soc.

311

431

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Literature data are collated for 38 stripped-envelope core-collapse supernovae (SE SNe; i.e. SNe IIb, Ib, Ic and Ic-BL) that have good light curve coverage in more than one optical band. Using bolometric corrections derived in previous work, the bolometric light curve of each SN is recovered and template bolometric light curves provided. Peak light distributions and decay rates are investigated; SNe subtypes are not cleanly distinguished in this parameter space, although some grouping of types does occur and there is a suggestion of a Phillips-like relation for most SNe Ic-BL. The bolometric light curves are modelled with a simple analytical prescription and compared to results from more detailed modelling. Distributions of the explosion parameters shows the extreme nature of SNe Ic-BL in terms of their 56 Ni mass and the kinetic energy, however ejected masses are similar to other subtypes. SNe Ib and Ic have very similar distributions of explosion parameters, indicating a similarity in progenitors. SNe IIb are the most homogeneous subtype and have the lowest average values for 56 Ni mass, ejected mass, and kinetic energy. Ejecta masses for each subtype and SE SNe as a whole are inconsistent with those expected from very massive stars. The majority of the ejecta mass distribution is well described by more moderately massive progenitors in binaries, indicating these are the dominant progenitor channel for SE SNe.

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Section: Discussionsupporting

confidence: 74%

Section: Bolometric Light Curvesmentioning

confidence: 99%

Bolometric light curves and explosion parameters of 38 stripped-envelope core-collapse supernovae

Lyman

Bersier

James

et al. 2016

Mon. Not. R. Astron. Soc.

311

431

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“…This value compares well to the value that can be obtained from meson decays 6 but is significantly smaller than the one derived from baryon decays 4,8 . Within conventions, the sign that is required in some cases is also known.…”

Section: Baryon: Submitted To World Scientific On November 15 2017supporting

confidence: 80%

RELATIONSHIP OF THE ³P₀ DECAY MODEL TO OTHER STRONG DECAY MODELS

2003

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The 3 P 0 decay model is briefly reviewed. Possible improvements, partly motivated by the examination of a microscopic description of a quark-anti-quark pair creation, are considered. They can provide support for the one-body character of the model which, otherwise, is difficult to justify. To some extent, they point to a boost effect that most descriptions of processes involving a pair creation cannot account for.

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“…Such ratios are expected to be quite sensitive to the details in the potential, and in the decay operator [147]. [166]. The first column identifies the particular decay.…”

Section: Kimentioning

confidence: 99%

Quark models of baryon masses and decays

Capstick¹

2000

Progress in Particle and Nuclear Physics

527

487

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The application of quark models to the spectra and strong and electromagnetic couplings of baryons is reviewed. This review focuses on calculations which attempt a global description of the masses and decay properties of baryons, although recent developments in applying large Nc QCD and lattice QCD to the baryon spectrum are described. After outlining the conventional onegluon-exchange picture, models which consider extensions to this approach are contrasted with dynamical quark models based on Goldstone-boson exchange and an algebraic collective-excitation approach. The spectra and electromagnetic and strong couplings that result from these models are compared with the quantities extracted from the data and each other, and the impact of various model assumptions on these properties is emphasized. Prospects for the resolution of the important issues raised by these comparisons are discussed.

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A (p/E) calculation of strong pionic decays of baryons

Abstract: Strong pionic decays of baryons are studied in a non-relativistic quark model framework via a convergent (p/E) expansion of the transition operator. Results are compared to the ones obtained within a more conventional (p/m) expansion.

Cited by 11 publications

References 10 publications

Bolometric light curves and explosion parameters of 38 stripped-envelope core-collapse supernovae

Bolometric light curves and explosion parameters of 38 stripped-envelope core-collapse supernovae

RELATIONSHIP OF THE ³P₀ DECAY MODEL TO OTHER STRONG DECAY MODELS

Quark models of baryon masses and decays

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A (p/E) calculation of strong pionic decays of baryons

Abstract: Strong pionic decays of baryons are studied in a non-relativistic quark model framework via a convergent (p/E) expansion of the transition operator. Results are compared to the ones obtained within a more conventional (p/m) expansion.

Cited by 11 publications

References 10 publications

Bolometric light curves and explosion parameters of 38 stripped-envelope core-collapse supernovae

Bolometric light curves and explosion parameters of 38 stripped-envelope core-collapse supernovae

RELATIONSHIP OF THE 3P0 DECAY MODEL TO OTHER STRONG DECAY MODELS

Quark models of baryon masses and decays

Contact Info

Product

Resources

About

RELATIONSHIP OF THE ³P₀ DECAY MODEL TO OTHER STRONG DECAY MODELS