Electromagnetic splitting for mesons and baryons using dressed constituent quarks

Silvestre‐Brac, B.; Brau, Fabian; Semay, Claude

doi:10.1088/0954-3899/29/12/002

Cited by 19 publications

(17 citation statements)

References 39 publications

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“…These measurements are the most precise to date. The mass splitting M 0 ðΣ c ð2455Þ þþ Þ − M 0 ðΣ c ð2455Þ 0 Þ is found to be positive as expected by the models [17][18][19][20][21][22][23].…”

Section: Resultssupporting

confidence: 60%

“…Due to the mass hierarchy between the d and u quarks, one may expect that the Σ 0 c ðddcÞ baryon is heavier than the Σ þþ c ðuucÞ baryon; however, many experimental results contradict this naive expectation [8,[11][12][13]. To explain the discrepancy, various models have been introduced [17][18][19][20][21][22][23] that predict positive mass splittings. Precise measurements of the mass splittings are necessary to test these models.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Measurements of the masses and widths of theΣc(2455)0/++
Lee¹,
Ko²,
Won³
et al. 2014
Phys. Rev. D
35
1
14
0
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We present measurements of the masses and decay widths of the baryonic states Σ c ð2455Þ 0=þþ and Σ c ð2520Þ 0=þþ using a data sample corresponding to an integrated luminosity of 711 fb −1 collected with the Belle detector at the KEKB e þ e − asymmetric-energy collider operating at the ϒð4SÞ resonance. We report the mass differences with respect to the Λ þ c baryon MðΣ c ð2455Þ 0 Þ − MðΛ þ c Þ ¼ 167.29 AE 0.01 AE 0.02 MeV=c 2 ; MðΣ c ð2455Þ þþ Þ − MðΛ þ c Þ ¼ 167.51 AE 0.01 AE 0.02 MeV=c 2 ; MðΣ c ð2520Þ 0 Þ − MðΛ þ c Þ ¼ 231.98 AE 0.11 AE 0.04 MeV=c 2 ; MðΣ c ð2520Þ þþ Þ − MðΛ þ c Þ ¼ 231.99 AE 0.10 AE 0.02 MeV=c 2 ; and the decay widths ΓðΣ c ð2455Þ 0 Þ ¼ 1.76 AE 0.04 þ0.09 −0.21 MeV=c 2 ; ΓðΣ c ð2455Þ þþ Þ ¼ 1.84 AE 0.04 þ0.07 −0.20 MeV=c 2 ; ΓðΣ c ð2520Þ 0 Þ ¼ 15.41 AE 0.41 þ0.20 −0.32 MeV=c 2 ; ΓðΣ c ð2520Þ þþ Þ ¼ 14.77 AE 0.25 þ0.18 −0.30 MeV=c 2 ; S.-H. LEE et al. PHYSICAL REVIEW D 89, 091102(R) (2014) 091102-2 RAPID COMMUNICATIONS where the first uncertainties are statistical and the second are systematic. The isospin mass splittings are measured to be MðΣ c ð2455Þ þþ Þ − MðΣ c ð2455Þ 0 Þ ¼ 0.22 AE 0.01 AE 0.01 MeV=c 2 and MðΣ c ð2520Þ þþ Þ− MðΣ c ð2520Þ 0 Þ ¼ 0.01 AE 0.15 AE 0.03 MeV=c 2. These results are the most precise to date.

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Section: Resultssupporting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Measurements of the masses and widths of theΣc(2455)0/++
Lee¹,
Ko²,
Won³
et al. 2014
Phys. Rev. D
35
1
14
0
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show abstract

“…This naively explains the large splitting for Ξ c (2790) and Ξ c (2815), which are P-wave excited states. These tendencies are also qualitatively consistent with the theoretical prediction [86,96] except for Ξ c (2970) which was not discovered when the theoretical calculations were performed. Table 6: Summary of the isospin splittings of the Ξ c baryons reported in [93].…”

Section: Charmed Baryonssupporting

confidence: 88%

Open charm hadron spectroscopy at B-factories

Kato

Iijima

2019

Progress in Particle and Nuclear Physics

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Open charm hadrons are excellent probes to study the dynamics of quarks and gluons inside hadrons. Because the mass of a charm quark is heavier than Λ QCD , so called heavy quark symmetry emerges in the hadron containing a charm quark and plays a central role in the classification and constraining the interactions. Belle and BaBar, which are B-factory experiments, have made significant advances in the field of open charm hadron spectroscopy in these 15 years. In this article, experimental advances on both open charm mesons and baryons by B-factory experiments are reviewed. Finally, the prospect of the open charm hadrons with the next generation B-factory experiment, Belle II is described.

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“…Expected by the models (for details see Ref. [87]), in our case both these isospin mass splittings are positive. Σ + c has been observed in a decay mode Λ + c π 0 by single experiment [88], because the detectors are inefficient for the π 0 identification as a decay product.…”

Section: σ C Statessupporting

confidence: 57%

Spectrum of Nonstrange Singly Charmed Baryons in the Constituent Quark Model

2020

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We study the masses of radial and orbital excited states of nonstrange singly charmed baryons in the framework of hypercentral Constituent Quark Model (hCQM). To obtain the mass spectra, the Coulomb plus screened potential is employed with the first order correction, which gives a relativistic effect of order O(1/m). The spin-spin, spin-orbit and tensor interactions are included (perturbatively as a spin dependent potential) in order to generate the splitting in mass spectra. We compare our computed mass spectra of nonstrange singly charmed baryons with the other theoretical predictions as well as with the experimental observations. We construct the Regge trajectories of these baryons in the (J, M 2 ) plane. Further, we analyze the strong one pion decay rates for S, P and the D-wave transitions in the framework of Heavy Hadron Chiral Perturbation Theory (HHChPT). Moreover, the electromagnetic properties like magnetic moments, transition magnetic moments and the radiative decay widths are determined for the ground state of these baryons in the constituent quark model.

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Electromagnetic splitting for mesons and baryons using dressed constituent quarks

Cited by 19 publications

References 39 publications

Measurements of the masses and widths of theΣc(2455)0/++
Lee¹,
Ko²,
Won³
et al. 2014
Phys. Rev. D
35
1
14
0
View full text Add to dashboard Cite

Measurements of the masses and widths of theΣc(2455)0/++
Lee¹,
Ko²,
Won³
et al. 2014
Phys. Rev. D
35
1
14
0
View full text Add to dashboard Cite

Open charm hadron spectroscopy at B-factories

Spectrum of Nonstrange Singly Charmed Baryons in the Constituent Quark Model

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Electromagnetic splitting for mesons and baryons using dressed constituent quarks

Cited by 19 publications

References 39 publications

Measurements of the masses and widths of theΣc(2455)0/++Lee1, Ko2, Won3 et al. 2014Phys. Rev. D351140View full textAdd to dashboardCite

Measurements of the masses and widths of theΣc(2455)0/++Lee1, Ko2, Won3 et al. 2014Phys. Rev. D351140View full textAdd to dashboardCite

Open charm hadron spectroscopy at B-factories

Spectrum of Nonstrange Singly Charmed Baryons in the Constituent Quark Model

Contact Info

Product

Resources

About

Measurements of the masses and widths of theΣc(2455)0/++
Lee¹,
Ko²,
Won³
et al. 2014
Phys. Rev. D
35
1
14
0
View full text Add to dashboard Cite

Measurements of the masses and widths of theΣc(2455)0/++
Lee¹,
Ko²,
Won³
et al. 2014
Phys. Rev. D
35
1
14
0
View full text Add to dashboard Cite