Double-Δ (1232) formation in pion-nucleus absorption

G. E. Brown; H. Toki; W. Weise; A. Wirzba

doi:10.1016/0370-2693(82)90597-4

Double-Δ (1232) formation in pion-nucleus absorption

G. E. Brown
, H. Toki
, W. Weise
, A. Wirzba

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

66 Scopus citations

Abstract

Double-Δ (1232) formation following pion absorption in and above the 3.3 resonance region is shown to provide an important absorption mechanism for heavy nuclei, if the ΔN → ΔΔ interaction behaves according to SU (4) quark model rules. The ΔΔ configuration is formed preferentially in T = 2 states and decays predominantly by emission of four nucleons, unlike the standard πNN → ΔN → NN two-nucleon process. We show that this mechanism is able to explain some of the striking features observed in proton emission spectra following π^±-nucleus absorption in the Δ region.

Original language	English
Pages (from-to)	39-44
Number of pages	6
Journal	Physics Letters B
Volume	118
Issue number	1-3
DOIs	https://doi.org/10.1016/0370-2693(82)90597-4
State	Published - 2 Dec 1982
Externally published	Yes

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title = "Double-Δ (1232) formation in pion-nucleus absorption",

abstract = "Double-Δ (1232) formation following pion absorption in and above the 3.3 resonance region is shown to provide an important absorption mechanism for heavy nuclei, if the ΔN → ΔΔ interaction behaves according to SU (4) quark model rules. The ΔΔ configuration is formed preferentially in T = 2 states and decays predominantly by emission of four nucleons, unlike the standard πNN → ΔN → NN two-nucleon process. We show that this mechanism is able to explain some of the striking features observed in proton emission spectra following π±-nucleus absorption in the Δ region.",

author = "Brown, \{G. E.\} and H. Toki and W. Weise and A. Wirzba",

note = "Funding Information: i Supported by USDOE Contract DE-AC02-76 ER 13001. 2 Supported in part by Bundesministerium fiJr Forschung und Technologic (BMFT) grant no. MEP 3200 X. 3 Permanent address: Institute of Theoreticai Physics, University of Regensburg, D-8400 Regensburg, West Germany. 4 Supported by Studienstiftung des Deutschen Volkes.",

year = "1982",

month = dec,

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doi = "10.1016/0370-2693(82)90597-4",

language = "English",

volume = "118",

pages = "39--44",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "1-3",

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TY - JOUR

T1 - Double-Δ (1232) formation in pion-nucleus absorption

AU - Brown, G. E.

AU - Toki, H.

AU - Weise, W.

AU - Wirzba, A.

N1 - Funding Information: i Supported by USDOE Contract DE-AC02-76 ER 13001. 2 Supported in part by Bundesministerium fiJr Forschung und Technologic (BMFT) grant no. MEP 3200 X. 3 Permanent address: Institute of Theoreticai Physics, University of Regensburg, D-8400 Regensburg, West Germany. 4 Supported by Studienstiftung des Deutschen Volkes.

PY - 1982/12/2

Y1 - 1982/12/2

N2 - Double-Δ (1232) formation following pion absorption in and above the 3.3 resonance region is shown to provide an important absorption mechanism for heavy nuclei, if the ΔN → ΔΔ interaction behaves according to SU (4) quark model rules. The ΔΔ configuration is formed preferentially in T = 2 states and decays predominantly by emission of four nucleons, unlike the standard πNN → ΔN → NN two-nucleon process. We show that this mechanism is able to explain some of the striking features observed in proton emission spectra following π±-nucleus absorption in the Δ region.

AB - Double-Δ (1232) formation following pion absorption in and above the 3.3 resonance region is shown to provide an important absorption mechanism for heavy nuclei, if the ΔN → ΔΔ interaction behaves according to SU (4) quark model rules. The ΔΔ configuration is formed preferentially in T = 2 states and decays predominantly by emission of four nucleons, unlike the standard πNN → ΔN → NN two-nucleon process. We show that this mechanism is able to explain some of the striking features observed in proton emission spectra following π±-nucleus absorption in the Δ region.

UR - https://www.scopus.com/pages/publications/0012715152

U2 - 10.1016/0370-2693(82)90597-4

DO - 10.1016/0370-2693(82)90597-4

M3 - Article

AN - SCOPUS:0012715152

SN - 0370-2693

VL - 118

SP - 39

EP - 44

JO - Physics Letters B

JF - Physics Letters B

IS - 1-3

ER -

Double-Δ (1232) formation in pion-nucleus absorption

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