Search for ηb in two-photon collisions at LEP II with the DELPHI detector

被引：12

作者：

Abdallah, J

Abreu, P

Adam, W

Adzic, P

Albrecht, T

Alderweireld, T

Alemany-Fernandez, R

Allmendinger, T

Allport, PP

Amaldi, U

Amapane, N

Amato, S

Anashkin, E

Andreazza, A

Andringa, S

Anjos, N

Antilogus, P

Apel, WD

Arnoud, Y

Ask, S

Asman, B

Augustin, JE

Augustinus, A

Baillon, P

Ballestrero, A

Bambade, P

Barbier, R

Bardin, D

Barker, GJ

Baroncelli, A

Battaglia, M

Baubillier, M

Barbier, R

Bardin, D

Barker, GJ

Baroncelli, A

Battaglia, M

Baubillier, M

Becks, KH

Begalli, M

Behrmann, A

Ben-Haim, E

Benekos, N

Benvenuti, A

Berat, C

Berggren, M

Berntzon, L

Bertrand, D

Besancon, M

Besson, N

机构：

[1] Univ Paris 11, CNRS, IN2P3, Accelerateur Lineaire Lab, F-91405 Orsay, France

[2] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

[3] Univ Antwerp, Dept Phys, B-2610 Antwerp, Belgium

[4] Vrije Univ Brussels, IIHE, B-1050 Brussels, Belgium

[5] Univ Etat Mons, Fac Sci, B-7000 Mons, Belgium

[6] Univ Athens, Phys Lab, GR-10680 Athens, Greece

[7] Univ Bergen, Dept Phys, NO-5007 Bergen, Norway

[8] Univ Bologna, Dipartimento Fis, I-40126 Bologna, Italy

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

[10] Ctr Brasileiro Pesquisas Fis, BR-22290 Rio De Janeiro, Brazil

[11] Pontificia Univ Catolica Rio de Janeiro, Dept Fis, BR-22453 Rio De Janeiro, Brazil

[12] Univ Estado Rio De Janeiro, Inst Fis, Rio De Janeiro, Brazil

[13] Coll France, IN2P3, CNRS, Phys Corpusculaire Lab, F-75231 Paris 05, France

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

[15] ULP, CNRS, IN2P3, Inst Rech Subatom, F-67037 Strasbourg, France

[16] NCSR Demokritos, Inst Nucl Phys, GR-15310 Athens, Greece

[17] CAS, Inst Phys, FZU, Div High Energy Phys, CZ-18040 Prague 8, Czech Republic

[18] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy

[19] Ist Nazl Fis Nucl, I-16146 Genoa, Italy

[20] Univ Grenoble 1, Inst Nucl Sci, IN2P3, CNRS, F-38026 St Martin Dheres, France

[21] Univ Helsinki, Helsinki Inst Phys, FIN-00014 Helsinki, Finland

[22] Univ Helsinki, Dept Phys Sci, FIN-00014 Helsinki, Finland

[23] Joint Inst Nucl Res, Dubna Head Post Off, RU-101000 Moscow, Russia

[24] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany

[25] Inst Nucl Phys PAN, PL-31142 Krakow, Poland

[26] Univ Min & Met Krakow, Fac Phys & Nucl Tech, PL-30055 Krakow, Poland

[27] Univ Lancaster, Sch Phys & Chem, Lancaster LA1 4YB, England

[28] IST, LIP, PT-1000 Lisbon, Portugal

[29] Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England

[30] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland

[31] Univ Paris 06, LPNHE, IN2P3, CNRS, F-75252 Paris 05, France

[32] Univ Paris 07, LPNHE, IN2P3, CNRS, F-75252 Paris 05, France

[33] Lund Univ, Dept Phys, SE-22363 Lund, Sweden

[34] Univ Lyon 1, IPNL, IN2P3, CNRS, F-69622 Villeurbanne, France

[35] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy

[36] Ist Nazl Fis Nucl, MILANO, I-20133 Milan, Italy

[37] Univ Milan, Dipartimento Fis, I-20126 Milan, Italy

[38] Ist Nazl Fis Nucl, MILANO, I-20126 Milan, Italy

[39] Charles Univ Prague, IPNP, MFF, CZ-18000 Prague 8, Czech Republic

[40] NIKHEF, NL-1009 DB Amsterdam, Netherlands

[41] Natl Tech Univ Athens, Dept Phys, GR-15773 Zografos, Greece

[42] Univ Oslo, Dept Phys, NO-0316 Oslo, Norway

[43] Univ Oviedo, Dept Fis, E-33007 Oviedo, Spain

[44] Univ Oxford, Dept Phys, Oxford OX1 3RH, England

[45] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy

[46] Ist Nazl Fis Nucl, I-35131 Padua, Italy

[47] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

[48] Univ Roma Tor Vergata, Dipartimento Fis, I-00173 Rome, Italy

[49] Ist Nazl Fis Nucl, I-00173 Rome, Italy

[50] Univ Roma 3, Dipartimento Fis, I-00146 Rome, Italy

来源：

PHYSICS LETTERS B | 2006年 / 634卷 / 04期

关键词：

D O I：

10.1016/j.physletb.2006.01.058

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The pseudoscalar meson eta(b) has been searched for in two-photon interactions at LEP II. The data sample corresponds to a total integrated luminosity of 617 pb(-1) at centre-of-mass energies ranging from 161 to 209 GeV. Upper limits at a confidence level of 95% on the product Gamma(gamma gamma) (eta(b)) x BR(eta(b)) are 190, 470 and 660 eV/c(2) for the eta(b) decaying into 4, 6 and 8 charged particles, respectively. (c) 2006 Published by Elsevier B.V.

引用

页码：340 / 346

页数：7

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