Direct search for light gluinos

被引：6

作者：

Fanti, V

Lai, A

Musa, L

Marras, D

Nappi, A

Hay, B

Moore, RW

Moore, KN

Munday, DJ

Needham, MD

Parker, MA

White, TO

Wotton, SA

Andersen, J

Barr, G

Bocquet, G

Bremer, J

Ceccucci, A

Cundy, D

Doble, N

Fischer, G

Funk, W

Gatignon, L

Gianoli, A

Gonidec, A

Govi, G

Grafström, P

Kubischta, W

Luitz, S

Kesseler, G

Matheys, JP

Norton, A

Palestini, S

Panzer-Steindel, B

Schinzel, D

Taureg, H

Velasco, M ^{[1
]}

Vossnack, O

Wahl, H

Wirrer, G

Kekelidze, V

Mestvirishvili, A

Potrebenikov, I

Tatichvili, G

Tkatchev, A

Zinchenko, A

Boyle, O

Martin, VJ

Knowles, IG

Parsons, HLC

机构：

[1] CERN, CH-1211 Geneva 23, Switzerland

[2] Ist Nazl Fis Nucl, I-09100 Cagliari, Italy

[3] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[4] Joint Inst Nucl Res, Dubna, Russia

[5] Univ Edinburgh, Dept Phys & Astron, Edinburgh EH9 3JZ, Midlothian, Scotland

[6] Univ Ferrara, Dipartmento Fis, I-44100 Ferrara, Italy

[7] Ist Nazl Fis Nucl, I-44100 Ferrara, Italy

[8] Univ Florence, Dipartimento Fis, I-50125 Florence, Italy

[9] Ist Nazl Fis Nucl, I-50125 Florence, Italy

[10] Univ Mainz, Inst Phys, D-55099 Mainz, Germany

[11] Univ Paris Sud, CNRS, IN2P3, Lab Accelerateur Lineaire, F-91406 Orsay, France

[12] Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy

[13] Ist Nazl Fis Nucl, I-06100 Perugia, Italy

[14] Scuola Normale Super Pisa, Dipartimento Fis, I-56100 Pisa, Italy

[15] Ist Nazl Fis Nucl, I-56100 Pisa, Italy

[16] CEA Saclay, DAPNIA, DSM, F-91191 Gif Sur Yvette, France

[17] Univ Gesamthsch Siegen, Fachbereich Phys, D-57068 Siegen, Germany

[18] Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy

[19] Ist Nazl Fis Nucl, I-10125 Turin, Italy

[20] Soltan Inst Nucl Studies, High Energy Phys Lab, PL-00681 Warsaw, Poland

[21] Osterreich Akad Wissensch, Inst Hochenergiephys, A-1050 Vienna, Austria

[22] Univ Cagliari, Dipartimento Fis, I-09100 Cagliari, Italy

来源：

PHYSICS LETTERS B | 1999年 / 446卷 / 02期

关键词：

D O I：

10.1016/S0370-2693(98)01459-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the results for a direct search for light gluinos through the appearance of eta --> 3 pi(0) with high transverse momentum in the vacuum tank of the NA48 experiment at CERN. We find one event within a lifetime range of 10(-9)-10(-3) s and another one between 10(-10)-10(-9) s. Both events are consistent with the expected background from neutrons in the beam, produced by 450 GeV protons impinging on the Be targets, which interact with the residual air in the tank. From these data we give limits on the production of the hypothetical g (g) over tilde bound state, the R-0 hadron, and its R-0 --> eta<(gamma)over tilde> decay in the R-0 mass range between 1 and 5 GeV. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：117 / 124

页数：8

共 16 条

[1] Search for light gluinos via the spontaneous appearance of pi(+)pi(-) pairs with an 800 GeV/c proton beam at Fermilab [J].

Adams, J ;

AlaviHarati, A ;

Albuquerque, IF ;

Alexopoulos, T ;

Arenton, M ;

Arisaka, K ;

Averitte, S ;

Barker, AR ;

Bellantoni, L ;

Bellavance, A ;

Belz, J ;

BenDavid, R ;

Blucher, E ;

Bock, GJ ;

Bown, C ;

Bricker, JD ;

Bright, S ;

Cheu, E ;

Childress, S ;

Coleman, R ;

Corcoran, MD ;

Corti, G ;

Cox, B ;

Crisler, MB ;

Erwin, AR ;

Ford, R ;

Graham, G ;

Graham, J ;

Hagan, K ;

Halkiadakis, E ;

Hanagaki, K ;

Hidaka, S ;

Jejer, V ;

Jennings, J ;

Jensen, DA ;

Johnson, P ;

Kessler, R ;

Kobrak, HGE ;

LaDue, J ;

Lath, A ;

Ledovskoy, A ;

McManus, AP ;

Mikelsons, P ;

Monnier, E ;

Nakaya, T ;

Nauenberg, U ;

Nelson, KS ;

Nguyen, H ;

ODell, V ;

Pang, M .

PHYSICAL REVIEW LETTERS, 1997, 79 (21) :4083-4087

[2]

ATHERTON H, 1980, 8007 CERN

[3]

BARR G, 1990, CERNSPSC9022 NA48 CO

[4] Performance of an electromagnetic liquid krypton calorimeter based on a ribbon electrode tower structure [J].

Barr, GD ;

Bruschini, C ;

Bocquet, C ;

Buchholz, P ;

Cundy, D ;

Doble, N ;

Funk, W ;

Gatignon, L ;

Gonidec, A ;

Hallgren, B ;

Kesseler, G ;

Lacourt, A ;

Laverriere, G ;

Linser, G ;

Martini, M ;

Norton, A ;

Schinzel, D ;

Seidl, W ;

Sozzi, MS ;

Taureg, H ;

Vossnack, O ;

Wahl, H ;

Wertelaers, P ;

Weterings, J ;

Ziolkowski, M ;

Kalinin, A ;

Kekelidze, V ;

Kozhevnikov, Y ;

Bertolotto, L ;

Carassiti, V ;

Duclos, J ;

Gianoli, A ;

Frabetti, PL ;

Savrie, M ;

Zeitnitz, O ;

Calvetti, M ;

Lubrano, P ;

Pepe, M ;

Calafiura, P ;

Cerri, C ;

Costantini, F ;

Fantechi, R ;

Gorini, B ;

Mannelli, I ;

Marzulli, V ;

Bederede, D ;

Debu, P ;

Givernaud, A ;

Gosset, L ;

Heitzmann, J .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1996, 370 (2-3) :413-424

[5] A PROTON TAGGING DETECTOR FOR THE NA48 EXPERIMENT [J].

BEIER, T ;

BLUMER, H ;

CALVETTI, M ;

CENCI, P ;

GRAFSTROM, P ;

MEHREN, T ;

PEPE, M ;

PUNTURO, M ;

RENK, B ;

SETZU, MG ;

STAECK, J ;

TALAMONTI, C ;

TAUROK, A ;

ZEITNITZ, O .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1995, 360 (1-2) :390-394

[6]

BIINO C, 1995, WORKSH CHANN OT COH

[7]

BINNO C, CERNSL98033

[8] SEARCH FOR SUPERSYMMETRIC PARTICLES IN HADRON-HADRON COLLISIONS [J].

DAWSON, S ;

EICHTEN, E ;

QUIGG, C .

PHYSICAL REVIEW D, 1985, 31 (07) :1581-1637

[9]

FANTI V, UNPUB EURO PHYS J C

[10] Experiments to find or exclude a long-lived, light gluino [J].

Farrar, G. R. .

Physical Review D Particles, Fields, Gravitation and Cosmology, 1995, 51 (07)

← 1 2 →