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Experimental Mass Limit for a Fourth-Generation Sequential Lepton frome+eāˆ’Annihilations ats=56GeV

Authors :
H. Asakura
S. Trentalange
R. Chiba
Y. Sugimoto
R. Tanaka
E. H. Thorndike
Z. P. Mao
Hiroyuki Sagawa
H. Harada
Hj Kim
Rr Mcneil
T. Nozaki
Yk Kim
A. Bacala
H. Miyata
A. Bodek
R. L. Lander
H. Kagan
Y. Yan
W. Metcalf
K. Gotow
S. Sakamoto
Robert Stone
F. Kajino
Yasuo Higashi
H. S. Budd
S. Wilson
S. K. Kim
S. S. Myung
R. Coombes
K. Toyoshima
H. Kozuka
C. G. Trahern
H. Itoh
H. Murata
Y. C. Zhu
S. L. Olsen
F. Sannes
T. Kumita
D. Zimmerman
K. Eguchi
I. H. Park
T. Sasaki
H. W. Zheng
S. Chakrabarti
Tsunehiko Omori
R. L. Malchow
R. D. Kass
G. N. Kim
T. Takeda
T. Mori
A. Sill
Y. Ishi
T. Ishizuka
K. Ohta
Winston Ko
C. A. Fry
S. Kobayashi
Y. H. Ho
L. E. Piilonen
D. Blanis
A. Abashian
S. Lusin
E. J. Kim
Smith
Y. T. Xu
J. S. Kang
Y. Fujii
C. Darden
Steve Schnetzer
K. Ueno
A. Maki
M. H. Lee
Kazuo Abe
Y. Sakai
Kaori Maeshima
S. Matsumoto
C. P. Cheng
M. Ogawa
Dong-Chul Son
P. Perez
K. Miyano
Kiyosumi Tsuchiya
Yoshimasa Kurihara
E. H. Low
A. Murakami
N. M. Shaw
Y. Takaiwa
M. C.S. Williams
P. N. Kirk
Y. Yamashita
K. Hanaoka
R. Poling
James C. Green
F. Naito
K. Sparks
M. Frautschi
Sarah Catherine Eno
Susumu Terada
H. Yokota
S. Igarashi
R. Imlay
R. Childers
C. Rosenfeld
Source :
Physical Review Letters. 61:911-914
Publication Year :
1988
Publisher :
American Physical Society (APS), 1988.

Abstract

A search for pair production for fourth-generation sequential leptons in e/sup +/e/sup -/ annihilation at a center-of-mass energy ..sqrt..s = 56 GeV is reported. Event topologies corresponding to the cases where one particle decays leptonically while the other decays hadronically as well as those where both particles decay hadronically were explored. We set a 95%-confidence-level lower limit of 27.6 GeV/c/sup 2/ for the mass of a fourth-generation lepton.

Subjects

Subjects :
Physics
Particle physics
Annihilation
High Energy Physics::Phenomenology
General Physics and Astronomy
Elementary particle
Fermion
Spectral line
Nuclear physics
Pair production
High Energy Physics::Experiment
Limit (mathematics)
Nuclear Experiment
Event (particle physics)
Lepton

Details

ISSN :
00319007
Volume :
61
Database :
OpenAIRE
Journal :
Physical Review Letters
Accession number :
edsair.doi...........6473145519b1a064fc9034fe3eba1a69

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