SINGLE LEPTOQUARK PRODUCTION AT E+E- AND GAMMA-GAMMA-COLLIDERS

被引:34
作者
BELANGER, G [1 ]
LONDON, D [1 ]
NADEAU, H [1 ]
机构
[1] MCGILL UNIV,DEPT PHYS,MONTREAL H3A 2T8,QUEBEC,CANADA
来源
PHYSICAL REVIEW D | 1994年 / 49卷 / 07期
关键词
D O I
10.1103/PhysRevD.49.3140
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We consider single production of leptoquarks (LQ's) at e+e- and gammagamma colliders, for two center-of-mass energy: square-root s = 500 GeV and 1 TeV. We find that LQ's which couple within the first generation are observable for LQ masses almost up to the kinematic limit, both at e+e- and gammagamma colliders, for an LQ coupling strength equal to alpha(em). The cross sections for single production of second- and third-generation LQ's at e+e- colliders are too small to be observable. In gammagamma collisions, on the other hand, second-generation LQ's with masses much larger than square-root s/2 can be detected. However, third-generation LQ's can be seen at gammagamma colliders only for masses at most approximately square-root s/2, making their observation more probable via the pair production mechanism.
引用
收藏
页码:3140 / 3147
页数:8
相关论文
共 15 条
[1]   QUASI-REAL ELECTRON METHOD IN HIGH-ENERGY QUANTUM ELECTRODYNAMICS [J].
BAIER, VN ;
FADIN, VS ;
KHOZE, VA .
NUCLEAR PHYSICS B, 1973, B 65 (02) :381-396
[2]   CONSTRAINTS ON SU(5)-TYPE LEPTOQUARKS [J].
BUCHMULLER, W ;
WYLER, D .
PHYSICS LETTERS B, 1986, 177 (3-4) :377-382
[3]  
BUCHMULLER W, 1987, PHYS LETT B, V191, P422
[4]  
BUDNEV VM, 1975, PHYS REP C, V15, P182
[5]   SEARCHING FOR LEPTOQUARKS IN ELECTRON-PHOTON COLLISIONS [J].
EBOLI, OJP ;
GREGORES, EM ;
MAGRO, MB ;
MERCADANTE, PG ;
NOVAES, SF .
PHYSICS LETTERS B, 1993, 311 (1-4) :147-152
[6]   COLLIDING GE AND GG BEAMS BASED ON THE SINGLE-PASS E+/-E- COLLIDERS (VLEPP TYPE) [J].
GINZBURG, IF ;
KOTKIN, GL ;
SERBO, VG ;
TELNOV, VI .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH, 1983, 205 (1-2) :47-68
[7]  
GINZBURG IF, 1983, SOV J NUCL PHYS+, V38, P614
[8]   COLLIDING-GAMMA-E AND GAMMA-GAMMA-BEAMS BASED ON SINGLE-PASS E+E- ACCELERATORS .2. POLARIZATION EFFECTS, MONOCHROMATIZATION IMPROVEMENT [J].
GINZBURG, IF ;
KOTKIN, GL ;
PANFIL, SL ;
SERBO, VG ;
TELNOV, VI .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1984, 219 (01) :5-24
[9]  
GINZBURG IF, 1983, SOV J NUCL PHYS+, V38, P222
[10]  
GINZBURG IF, UNPUB NOVOSIBIRSK RE