DO THE PRESENT ELECTROWEAK PRECISION-MEASUREMENTS LEAVE ROOM FOR EXTRA GENERATIONS

被引：23

作者：

NOVIKOV, VA

OKUN, LB

ROZANOV, AN

VYSOTSKY, MI

YUROV, VP

机构：

[1] CERN,DIV THEORET PHYS,CH-1211 GENEVA 23,SWITZERLAND

[2] CERN,DIV PARTICLE PHYS EXPT,CH-1211 GENEVA 23,SWITZERLAND

[3] INST THEORET & EXPTL PHYS,MOSCOW 117259,RUSSIA

来源：

MODERN PHYSICS LETTERS A | 1995年 / 10卷 / 26期

关键词：

D O I：

10.1142/S0217732395002064

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The recent data on Z boson decays and on the W mass are analyzed from the point of view of the possible existence of extra generations of leptons and quarks with masses greater than or equal to m(Z)/2. Present experimental accuracy is not sufficient to exclude the existence of one extra generation of leptons and quarks, even with masses as low as 50 GeV.

引用

页码：1915 / 1922

页数：8

共 8 条

[1]

ALTARELLI G, 1993, 1993 MARS EPS HEP C

[2]

CLARKE P, 1994 MOR C EL INT UN

[3] LEADING RADIATIVE-CORRECTIONS IN 2-SCALAR-DOUBLET MODELS [J].

FROGGATT, CD ;

MOORHOUSE, RG ;

KNOWLES, IG .

PHYSICAL REVIEW D, 1992, 45 (07) :2471-2481

[4] ON THE ELECTROWEAK ONE-LOOP CORRECTIONS [J].

NOVIKOV, VA ;

OKUN, LB ;

VYSOTSKY, MI .

NUCLEAR PHYSICS B, 1993, 397 (1-2) :35-83

[5] THE VALUES OF M(T) AND (ALPHA)OVER-BAR-S DERIVED FROM THE NONOBSERVATION OF ELECTROWEAK RADIATIVE-CORRECTIONS AT LEP - GLOBAL FIT [J].

NOVIKOV, VA ;

OKUN, LB ;

ROZANOV, AN ;

VYSOTSKY, MI ;

YUROV, VP .

PHYSICS LETTERS B, 1994, 331 (3-4) :433-440

[6] DO PRESENT LEP DATA PROVIDE EVIDENCE FOR ELECTROWEAK CORRECTIONS [J].

NOVIKOV, VA ;

OKUN, LB ;

VYSOTSKY, MI .

MODERN PHYSICS LETTERS A, 1993, 8 (27) :2529-2538

[7]

NOVIKOV VA, 1994, CERN TH721794 PREPR

[8]

1992, PHYS REV D, V45

← 1 →