Photon pair production by e+e- annihilation and search for supersymmetric photinos at energies greater than 40 GeV

M. Althoff,W. Braunschweig,F. J. Kirschfink,K. Lübelsmeyer,H.-U. Martyn,R. Rosskamp,D. Schmitz,H. Siebke,W. Wallraff,J. Eisenmann,H. M. Fischer,H. Hartmann,A. Jocksch,G. Knop,H. Kolanoski,H. Kück,V. Mertens,R. Wedemeyer,B. Foster,A. Eskreys,K. Gather,H. Hultschig,P. Joos,U Kötz,H Kowalski,A. Ladage,B. Löhr,D. Lüke,P. Mättig,D. Notz,R. J. Nowak,J. Pyrlik,M Rushton,W. Schütte,D. Trines,T. Tymieniecka,G. Wolf,G. Yekutieli,Ch. Xiao,R. Fohrmann,E. Hilger,T. Kracht,H. L. Krasemann,P. Leu,E. Lohrmann,D. Pandoulas,G. Poelz,K. U. Pösnecker,B.H. Wiik,R. Beuselinck,D.M. Binnie,P.J. Dornan,D. A. Garbutt,C. Jenkins,T.D. Jones,W. G. Jones,J. McCardle,J.K. Sedgbeer,J. Thomas,W. A. T. Wan Abdullah,K. W. Bell,M.G. Bowler,P. Bull,R. Cashmore,P. E. L. Clarke,P. D. Dauncey,R.C.E. Devenish,P. Grossmann,C. M. Hawkes,S. L. Lloyd,D. J. Mellor,C. Youngman,G.E. Forden,J. C. Hart,J. Harvey,D.K. Hasell,D. H. Saxon,F. Barreiro,S. Brandt,M. Dittmar,M. Holder,G. Kreutz,B. Neumann,E. Duchovni,Y. Eisenberg,U. Karshon,G. Mikenberg,R. Mir,D. Revel,E. E. Ronat,A. Shapira,M. Winik,G. Baranko,A. Caldwell,Michael G. Cherney,J. M. Izen,M. Mermikides,S. Ritz,G. Rudolph,D. Strom,M. Takashima,H. Venkataramania,E. Wicklund,Sau Lan Wu,G. Zobernig

Photon pair production by e+e- annihilation and search for supersymmetric photinos at energies greater than 40 GeV

1984

M. Althoff
W. Braunschweig
F. J. Kirschfink
K. Lübelsmeyer
H.-U. Martyn
R. Rosskamp
D. Schmitz
H. Siebke
W. Wallraff
J. Eisenmann
H. M. Fischer
H. Hartmann
A. Jocksch
G. Knop
H. Kolanoski
H. Kück
V. Mertens
R. Wedemeyer
B. Foster
A. Eskreys
K. Gather
H. Hultschig
P. Joos
U Kötz
H Kowalski
A. Ladage
B. Löhr
D. Lüke
P. Mättig
D. Notz
R. J. Nowak
J. Pyrlik
M Rushton
W. Schütte
D. Trines
T. Tymieniecka
G. Wolf
G. Yekutieli
Ch. Xiao
R. Fohrmann
E. Hilger
T. Kracht
H. L. Krasemann
P. Leu
E. Lohrmann
D. Pandoulas
G. Poelz
K. U. Pösnecker
B.H. Wiik
R. Beuselinck
D.M. Binnie
P.J. Dornan
D. A. Garbutt
C. Jenkins
T.D. Jones
W. G. Jones
J. McCardle
J.K. Sedgbeer
J. Thomas
W. A. T. Wan Abdullah
K. W. Bell
M.G. Bowler
P. Bull
R. Cashmore
P. E. L. Clarke
P. D. Dauncey
R.C.E. Devenish
P. Grossmann
C. M. Hawkes
S. L. Lloyd
D. J. Mellor
C. Youngman
G.E. Forden
J. C. Hart
J. Harvey
D.K. Hasell
D. H. Saxon
F. Barreiro
S. Brandt
M. Dittmar
M. Holder
G. Kreutz
B. Neumann
E. Duchovni
Y. Eisenberg
U. Karshon
G. Mikenberg
R. Mir
D. Revel
E. E. Ronat
A. Shapira
M. Winik
G. Baranko
A. Caldwell
Michael G. Cherney
J. M. Izen
M. Mermikides
S. Ritz
G. Rudolph
D. Strom
M. Takashima
H. Venkataramania
E. Wicklund
Sau Lan Wu
G. Zobernig

The cross section for the processe+e−→γγ has been measured for c.m. energies 39.5 61 GeV and Λ+> GeV (95% confidence level) have been determined. A search for two photon final states with missing energy provided lower limits on the masses of the photino and selectron.

Keywords:

Photino
Pair production
Quantum field theory
Annihilation
Nuclear physics
Particle physics
Photon
Missing energy
Elementary particle
Physics
Selectron tube

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