Electromagnetic mass differences of N and Δ in the Skyrme model

Bing An Li; Mu Lin Yan; Keh Fei Liu

doi:10.1016/0370-2693(86)90779-3

Electromagnetic mass differences of N and Δ in the Skyrme model

Bing An Li, Mu Lin Yan, Keh Fei Liu

Research output: Contribution to journal › Article › peer-review

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Abstract

The electromagnetic mass differences of p, n and Δ⁺⁺, Δ⁺, Δ⁰, Δ^- are evaluated in the Skyrme model. In order to explain the observed proton-neutron mass difference, a new term which corresponds to the down-up quark mass difference has to be introduced. With M_p = M_n as an input which requires m_d-m_u = 2 MeV, we predict the mass differences M_Δ⁺⁺-M_Δ⁺, M_Δ⁺-M_Δ⁰ and M_Δ⁰-M_Δ^-.

Original language	English
Pages (from-to)	409-412
Number of pages	4
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	177
Issue number	3-4
DOIs	https://doi.org/10.1016/0370-2693(86)90779-3
State	Published - Sep 18 1986

Bibliographical note

Funding Information:
This work is supported in part by the DOE grant No. DE-FG05-84ER40154 and DOE contract No. DE-AC02-76ER13001. One of us (B.A.L.) would like to acknowledge the hospitality of Professor C.N. Yang and K.F. Liu would like to acknowledge the hospitality received while visiting the Physics Department in SUNY/Stony Brook.

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/0370-2693(86)90779-3

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title = "Electromagnetic mass differences of N and Δ in the Skyrme model",

abstract = "The electromagnetic mass differences of p, n and Δ++, Δ+, Δ0, Δ- are evaluated in the Skyrme model. In order to explain the observed proton-neutron mass difference, a new term which corresponds to the down-up quark mass difference has to be introduced. With Mp = Mn as an input which requires md-mu = 2 MeV, we predict the mass differences MΔ++-MΔ+, MΔ+-MΔ0 and MΔ0-MΔ-.",

author = "Li, {Bing An} and Yan, {Mu Lin} and Liu, {Keh Fei}",

note = "Funding Information: This work is supported in part by the DOE grant No. DE-FG05-84ER40154 and DOE contract No. DE-AC02-76ER13001. One of us (B.A.L.) would like to acknowledge the hospitality of Professor C.N. Yang and K.F. Liu would like to acknowledge the hospitality received while visiting the Physics Department in SUNY/Stony Brook.",

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T1 - Electromagnetic mass differences of N and Δ in the Skyrme model

AU - Li, Bing An

AU - Yan, Mu Lin

AU - Liu, Keh Fei

N1 - Funding Information: This work is supported in part by the DOE grant No. DE-FG05-84ER40154 and DOE contract No. DE-AC02-76ER13001. One of us (B.A.L.) would like to acknowledge the hospitality of Professor C.N. Yang and K.F. Liu would like to acknowledge the hospitality received while visiting the Physics Department in SUNY/Stony Brook.

PY - 1986/9/18

Y1 - 1986/9/18

N2 - The electromagnetic mass differences of p, n and Δ++, Δ+, Δ0, Δ- are evaluated in the Skyrme model. In order to explain the observed proton-neutron mass difference, a new term which corresponds to the down-up quark mass difference has to be introduced. With Mp = Mn as an input which requires md-mu = 2 MeV, we predict the mass differences MΔ++-MΔ+, MΔ+-MΔ0 and MΔ0-MΔ-.

AB - The electromagnetic mass differences of p, n and Δ++, Δ+, Δ0, Δ- are evaluated in the Skyrme model. In order to explain the observed proton-neutron mass difference, a new term which corresponds to the down-up quark mass difference has to be introduced. With Mp = Mn as an input which requires md-mu = 2 MeV, we predict the mass differences MΔ++-MΔ+, MΔ+-MΔ0 and MΔ0-MΔ-.

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

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IS - 3-4

ER -

Electromagnetic mass differences of N and Δ in the Skyrme model

Abstract

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