Search for R-parity breaking sneutrino exchange at LEP

被引：17

作者：

Acciarri, M ^{[1
]}

Adriani, O

Aguilar-Benitez, M

Ahlen, S

Alcaraz, J

Alemanni, G

Allaby, J

Aloisio, A

Alverson, G

Alviggi, MG

Ambrosi, G

Anderhub, H

Andreev, VP

Angelescu, T

Anselmo, F

Arefiev, A

Azemoon, T

Aziz, T

Bagnaia, P

Baksay, L

Banerjee, S

Banicz, K

Barczyk, A

Barillere, R

Barone, L

Bartalini, P

Baschirotto, A

Basile, M

Battiston, R

Bay, A

Becattini, F

Becker, U

Behner, F

Berdugo, J

Berges, P

Bertucci, B

Betev, BL

Bhattacharya, S

Biasini, M

Biland, A

Bilei, GM

Blaising, JJ

Blyth, SC

Bobbink, GJ

Bock, R

Bohm, A

Boldizsar, L

Borgia, B

Bourilkov, D

机构：

[1] Rhein Westfal TH Aachen, Inst Phys 1, D-52056 Aachen, Germany

[2] Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany

[3] NIKHEF H, Natl Inst High Energy Phys, NL-1009 DB Amsterdam, Netherlands

[4] Univ Amsterdam, NL-1009 DB Amsterdam, Netherlands

[5] Univ Michigan, Ann Arbor, MI 48109 USA

[6] Lab Annecy Le Vieux Phys Particules, IN2P3, CNRS, F-74941 Annecy Le Vieux, France

[7] Johns Hopkins Univ, Baltimore, MD 21218 USA

[8] Univ Basel, Inst Phys, CH-4056 Basel, Switzerland

[9] Louisiana State Univ, Baton Rouge, LA 70803 USA

[10] Inst High Energy Phys, Beijing 100039, Peoples R China

[11] Humboldt Univ, D-10099 Berlin, Germany

[12] Univ Bologna, I-40126 Bologna, Italy

[13] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy

[14] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[15] Boston Univ, Boston, MA 02215 USA

[16] Northeastern Univ, Boston, MA 02115 USA

[17] Inst Atom Phys, R-76900 Bucharest, Romania

[18] Univ Bucharest, R-76900 Bucharest, Romania

[19] Hungarian Acad Sci, Cent Res Inst Phys, H-1525 Budapest 114, Hungary

[20] Harvard Univ, Cambridge, MA 02139 USA

[21] MIT, Cambridge, MA 02139 USA

[22] Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy

[23] Univ Florence, I-50125 Florence, Italy

[24] CERN, European Lab Particle Phys, CH-1211 Geneva 23, Switzerland

[25] World Lab, FBLJA Project, CH-1211 Geneva 23, Switzerland

[26] Univ Geneva, CH-1211 Geneva 4, Switzerland

来源：

PHYSICS LETTERS B | 1997年 / 414卷 / 3-4期

基金：

中国国家自然科学基金; 匈牙利科学研究基金会;

关键词：

D O I：

10.1016/S0370-2693(97)01200-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on a search for R-parity breaking effects due to supersymmetric tau-sneutrino exchange in the reactions e(+)e(-) --> e(+)e(-) and e(+)e(-) --> mu(+)mu(-) at centre-of-mass energies from 91 GeV to 172 GeV, using the L3 detector at LEP. No evidence for deviations from the Standard Model expectations of the measured cross sections and forward-backward asymmetries for these reactions is found. Upper Limits for the couplings lambda(131) and lambda(232), for sneutrino masses up to m(<(nu)over bar>tau) less than or equal to 190GeV are determined from an analysis of the expected effects due to tau sneutrino exchange. (C) 1997 Elsevier Science B.V.

引用

页码：373 / 381

页数：9

共 31 条

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