Title of article
Measurement of the Σ− charge radius by Σ−–electron elastic scattering
Author/Authors
SELEX Collaboration، نويسنده , , I Eschrich، نويسنده , , H Krüger، نويسنده , , J Simon، نويسنده , , K Vorwalter، نويسنده , , G. Alkhazov، نويسنده , , A.G. Atamantchouk، نويسنده , , M.Y Balatz، نويسنده , , N.F. Bondar، نويسنده , , P.S. Cooper، نويسنده , , L.J. Dauwe، نويسنده , , G.V. Davidenko، نويسنده , , U Dersch، نويسنده , , G. Dirkes، نويسنده , , A.G. Dolgolenko، نويسنده , , G.B. Dzyubenko، نويسنده , , R Edelstein، نويسنده , , L Emediato، نويسنده , , A.M.F. Endler، نويسنده , , J. Engelfried، نويسنده , , et al.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2001
Pages
7
From page
233
To page
239
Abstract
The Σ− mean squared charge radius has been measured in the space-like Q2 range 0.035–0.105 GeV2/c2 by elastic scattering of a Σ− beam off atomic electrons. The measurement was performed with the SELEX (E781) spectrometer using the Fermilab hyperon beam at a mean energy of 610 GeV/c.
We obtain 〈r2ch〉Σ−=(0.61±0.12(stat.)±0.09(syst.)) fm2. The proton and π− charge radii were measured as well and are consistent with results of other experiments. Our result agrees with the recently measured strong interaction radius of the Σ−.
Keywords
Electromagnetic form factors , Elastic scattering , Hadron-induced elastic scattering at high energy , Hyperons , Electron–?? elastic scattering , ?? form factor , ?? charge radius , Hadron strong and electromagnetic radii
Journal title
PHYSICS LETTERS B
Serial Year
2001
Journal title
PHYSICS LETTERS B
Record number
915010
Link To Document