Determination of the ΛpK coupling constant from LEAR data on p̄p→ΛΛ

R G E Timmermans; TA Rijken; JJ de Swart

doi:10.1016/0370-2693(91)90886-U

Determination of the ΛpK coupling constant from LEAR data on p̄p→ΛΛ

R G E Timmermans
, TA Rijken
, JJ de Swart

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

33 Citations (Scopus)

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Abstract

From recent high quality data taken at LEAR on the strangeness-exchange reaction ppBAR --> LAMBDA-BAR-LAMBDA we could determine the LAMBDA-pK coupling constant at the kaon pole. The value found is f-LAMBDA-pK2 = 0.071 +/- 0.007 or equivalently g-LAMBDA-pK2 = 15.4 +/- 1.5. Using SU(3) symmetry for the pseudovector coupling constants we find for the ratio alpha = F/(F + D) the value alpha-PV = 0.34 +/- 0.04, in excellent agreement with the value alpha = 0.355 +/- 0.006 as obtained from weak semileptonic baryon decays.

Original language	English
Pages (from-to)	227-231
Number of pages	5
Journal	Physics Letters B
Volume	257
Issue number	1-2
DOIs	https://doi.org/10.1016/0370-2693(91)90886-U
Publication status	Published - 21-Mar-1991
Externally published	Yes

Keywords

PARAMETERS
THRESHOLD

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@article{7709800323cb4b358af8e130d3e4b244,

title = "Determination of the ΛpK coupling constant from LEAR data on {\=p}p→ΛΛ",

abstract = "From recent high quality data taken at LEAR on the strangeness-exchange reaction ppBAR --> LAMBDA-BAR-LAMBDA we could determine the LAMBDA-pK coupling constant at the kaon pole. The value found is f-LAMBDA-pK2 = 0.071 +/- 0.007 or equivalently g-LAMBDA-pK2 = 15.4 +/- 1.5. Using SU(3) symmetry for the pseudovector coupling constants we find for the ratio alpha = F/(F + D) the value alpha-PV = 0.34 +/- 0.04, in excellent agreement with the value alpha = 0.355 +/- 0.006 as obtained from weak semileptonic baryon decays.",

keywords = "PARAMETERS, THRESHOLD",

author = "Timmermans, \{R G E\} and TA Rijken and \{de Swart\}, JJ",

year = "1991",

month = mar,

day = "21",

doi = "10.1016/0370-2693(91)90886-U",

language = "English",

volume = "257",

pages = "227--231",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "ELSEVIER SCIENCE BV",

number = "1-2",

}

TY - JOUR

T1 - Determination of the ΛpK coupling constant from LEAR data on p̄p→ΛΛ

AU - Timmermans, R G E

AU - Rijken, TA

AU - de Swart, JJ

PY - 1991/3/21

Y1 - 1991/3/21

N2 - From recent high quality data taken at LEAR on the strangeness-exchange reaction ppBAR --> LAMBDA-BAR-LAMBDA we could determine the LAMBDA-pK coupling constant at the kaon pole. The value found is f-LAMBDA-pK2 = 0.071 +/- 0.007 or equivalently g-LAMBDA-pK2 = 15.4 +/- 1.5. Using SU(3) symmetry for the pseudovector coupling constants we find for the ratio alpha = F/(F + D) the value alpha-PV = 0.34 +/- 0.04, in excellent agreement with the value alpha = 0.355 +/- 0.006 as obtained from weak semileptonic baryon decays.

AB - From recent high quality data taken at LEAR on the strangeness-exchange reaction ppBAR --> LAMBDA-BAR-LAMBDA we could determine the LAMBDA-pK coupling constant at the kaon pole. The value found is f-LAMBDA-pK2 = 0.071 +/- 0.007 or equivalently g-LAMBDA-pK2 = 15.4 +/- 1.5. Using SU(3) symmetry for the pseudovector coupling constants we find for the ratio alpha = F/(F + D) the value alpha-PV = 0.34 +/- 0.04, in excellent agreement with the value alpha = 0.355 +/- 0.006 as obtained from weak semileptonic baryon decays.

KW - PARAMETERS

KW - THRESHOLD

U2 - 10.1016/0370-2693(91)90886-U

DO - 10.1016/0370-2693(91)90886-U

M3 - Article

SN - 0370-2693

VL - 257

SP - 227

EP - 231

JO - Physics Letters B

JF - Physics Letters B

IS - 1-2

ER -

Determination of the ΛpK coupling constant from LEAR data on p̄p→ΛΛ

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