Search for Lepton Flavor Violation in ϒ(3S)→e^{±}μ^{∓}.

Journal

Physical review letters
ISSN: 1079-7114
Titre abrégé: Phys Rev Lett
Pays: United States
ID NLM: 0401141

Informations de publication

Date de publication:
04 Mar 2022
Historique:
received: 10 09 2021
accepted: 27 01 2022
entrez: 18 3 2022
pubmed: 19 3 2022
medline: 19 3 2022
Statut: ppublish

Résumé

We report on the first search for electron-muon lepton flavor violation (LFV) in the decay of a b quark and b antiquark bound state. We look for the LFV decay ϒ(3S)→e^{±}μ^{∓} in a sample of 118 million ϒ(3S) mesons from 27  fb^{-1} of data collected with the BABAR detector at the SLAC PEP-II e^{+}e^{-} collider operating with a 10.36 GeV center-of-mass energy. No evidence for a signal is found, and we set a limit on the branching fraction B[ϒ(3S)→e^{±}μ^{∓}]<3.6×10^{-7} at 90% C. L. This result can be interpreted as a limit Λ_{NP}/g_{NP}^{2}>80  TeV on the energy scale Λ_{NP} divided by the coupling-squared g_{NP}^{2} of relevant new physics (NP).

Identifiants

DOI: 10.1103/PhysRevLett.128.091804 PMID: 35302790
pubmed: 35302790
doi: 10.1103/PhysRevLett.128.091804
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

091804

Auteurs

J P Lees (JP)

Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP), Université de Savoie, CNRS/IN2P3, F-74941 Annecy-Le-Vieux, France.

V Poireau (V)

Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP), Université de Savoie, CNRS/IN2P3, F-74941 Annecy-Le-Vieux, France.

V Tisserand (V)

Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP), Université de Savoie, CNRS/IN2P3, F-74941 Annecy-Le-Vieux, France.

E Grauges (E)

Universitat de Barcelona, Facultat de Fisica, Departament ECM, E-08028 Barcelona, Spain.

A Palano (A)

INFN Sezione di Bari, I-70126 Bari, Italy.

G Eigen (G)

University of Bergen, Institute of Physics, N-5007 Bergen, Norway.

D N Brown (DN)

Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720, USA.

Yu G Kolomensky (YG)

Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720, USA.

M Fritsch (M)

Ruhr Universität Bochum, Institut für Experimentalphysik 1, D-44780 Bochum, Germany.

H Koch (H)

Ruhr Universität Bochum, Institut für Experimentalphysik 1, D-44780 Bochum, Germany.

T Schroeder (T)

Ruhr Universität Bochum, Institut für Experimentalphysik 1, D-44780 Bochum, Germany.

R Cheaib (R)

University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.

C Hearty (C)

Institute of Particle Physics, Vancouver, British Columbia V6T 1Z1, Canada.
University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.

T S Mattison (TS)

University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.

J A McKenna (JA)

University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.

R Y So (RY)

University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.

V E Blinov (VE)

Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia.
Novosibirsk State University, Novosibirsk 630090, Russia.
Novosibirsk State Technical University, Novosibirsk 630092, Russia.

A R Buzykaev (AR)

Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia.

V P Druzhinin (VP)

Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia.
Novosibirsk State University, Novosibirsk 630090, Russia.

V B Golubev (VB)

Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia.
Novosibirsk State University, Novosibirsk 630090, Russia.

E A Kozyrev (EA)

Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia.
Novosibirsk State University, Novosibirsk 630090, Russia.

E A Kravchenko (EA)

Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia.
Novosibirsk State University, Novosibirsk 630090, Russia.

A P Onuchin (AP)

Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia.
Novosibirsk State University, Novosibirsk 630090, Russia.
Novosibirsk State Technical University, Novosibirsk 630092, Russia.

S I Serednyakov (SI)

Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia.
Novosibirsk State University, Novosibirsk 630090, Russia.

Yu I Skovpen (YI)

Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia.
Novosibirsk State University, Novosibirsk 630090, Russia.

E P Solodov (EP)

Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia.
Novosibirsk State University, Novosibirsk 630090, Russia.

K Yu Todyshev (KY)

Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia.
Novosibirsk State University, Novosibirsk 630090, Russia.

A J Lankford (AJ)

University of California at Irvine, Irvine, California 92697, USA.

B Dey (B)

University of California at Riverside, Riverside, California 92521, USA.

J W Gary (JW)

University of California at Riverside, Riverside, California 92521, USA.

O Long (O)

University of California at Riverside, Riverside, California 92521, USA.

A M Eisner (AM)

University of California at Santa Cruz, Institute for Particle Physics, Santa Cruz, California 95064, USA.

W S Lockman (WS)

University of California at Santa Cruz, Institute for Particle Physics, Santa Cruz, California 95064, USA.

W Panduro Vazquez (W)

University of California at Santa Cruz, Institute for Particle Physics, Santa Cruz, California 95064, USA.

D S Chao (DS)

California Institute of Technology, Pasadena, California 91125, USA.

C H Cheng (CH)

California Institute of Technology, Pasadena, California 91125, USA.

B Echenard (B)

California Institute of Technology, Pasadena, California 91125, USA.

K T Flood (KT)

California Institute of Technology, Pasadena, California 91125, USA.

D G Hitlin (DG)

California Institute of Technology, Pasadena, California 91125, USA.

J Kim (J)

California Institute of Technology, Pasadena, California 91125, USA.

Y Li (Y)

California Institute of Technology, Pasadena, California 91125, USA.

D X Lin (DX)

California Institute of Technology, Pasadena, California 91125, USA.

S Middleton (S)

California Institute of Technology, Pasadena, California 91125, USA.

T S Miyashita (TS)

California Institute of Technology, Pasadena, California 91125, USA.

P Ongmongkolkul (P)

California Institute of Technology, Pasadena, California 91125, USA.

J Oyang (J)

California Institute of Technology, Pasadena, California 91125, USA.

F C Porter (FC)

California Institute of Technology, Pasadena, California 91125, USA.

M Röhrken (M)

California Institute of Technology, Pasadena, California 91125, USA.

Z Huard (Z)

University of Cincinnati, Cincinnati, Ohio 45221, USA.

B T Meadows (BT)

University of Cincinnati, Cincinnati, Ohio 45221, USA.

B G Pushpawela (BG)

University of Cincinnati, Cincinnati, Ohio 45221, USA.

M D Sokoloff (MD)

University of Cincinnati, Cincinnati, Ohio 45221, USA.

L Sun (L)

University of Cincinnati, Cincinnati, Ohio 45221, USA.

J G Smith (JG)

University of Colorado, Boulder, Colorado 80309, USA.

S R Wagner (SR)

University of Colorado, Boulder, Colorado 80309, USA.

D Bernard (D)

Laboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS/IN2P3, F-91128 Palaiseau, France.

M Verderi (M)

Laboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS/IN2P3, F-91128 Palaiseau, France.

D Bettoni (D)

INFN Sezione di Ferrara, I-44122 Ferrara, Italy.

C Bozzi (C)

INFN Sezione di Ferrara, I-44122 Ferrara, Italy.

R Calabrese (R)

INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, I-44122 Ferrara, Italy.

G Cibinetto (G)

INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, I-44122 Ferrara, Italy.

E Fioravanti (E)

INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, I-44122 Ferrara, Italy.

I Garzia (I)

INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, I-44122 Ferrara, Italy.

E Luppi (E)

INFN Sezione di Ferrara, I-44122 Ferrara, Italy.
Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, I-44122 Ferrara, Italy.

V Santoro (V)

INFN Sezione di Ferrara, I-44122 Ferrara, Italy.

A Calcaterra (A)

INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.

R de Sangro (R)

INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.

G Finocchiaro (G)

INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.

S Martellotti (S)

INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.

P Patteri (P)

INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.

I M Peruzzi (IM)

INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.

M Piccolo (M)

INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.

M Rotondo (M)

INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.

A Zallo (A)

INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy.

S Passaggio (S)

INFN Sezione di Genova, I-16146 Genova, Italy.

C Patrignani (C)

INFN Sezione di Genova, I-16146 Genova, Italy.

B J Shuve (BJ)

Harvey Mudd College, Claremont, California 91711, USA.

H M Lacker (HM)

Humboldt-Universität zu Berlin, Institut für Physik, D-12489 Berlin, Germany.

B Bhuyan (B)

Indian Institute of Technology Guwahati, Guwahati, Assam 781 039, India.

U Mallik (U)

University of Iowa, Iowa City, Iowa 52242, USA.

C Chen (C)

Iowa State University, Ames, Iowa 50011, USA.

J Cochran (J)

Iowa State University, Ames, Iowa 50011, USA.

S Prell (S)

Iowa State University, Ames, Iowa 50011, USA.

A V Gritsan (AV)

Johns Hopkins University, Baltimore, Maryland 21218, USA.

N Arnaud (N)

Université Paris-Saclay, CNRS/IN2P3, IJCLab, F-91405 Orsay, France.

M Davier (M)

Université Paris-Saclay, CNRS/IN2P3, IJCLab, F-91405 Orsay, France.

F Le Diberder (F)

Université Paris-Saclay, CNRS/IN2P3, IJCLab, F-91405 Orsay, France.

A M Lutz (AM)

Université Paris-Saclay, CNRS/IN2P3, IJCLab, F-91405 Orsay, France.

G Wormser (G)

Université Paris-Saclay, CNRS/IN2P3, IJCLab, F-91405 Orsay, France.

D J Lange (DJ)

Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

D M Wright (DM)

Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

J P Coleman (JP)

University of Liverpool, Liverpool L69 7ZE, United Kingdom.

E Gabathuler (E)

University of Liverpool, Liverpool L69 7ZE, United Kingdom.

D E Hutchcroft (DE)

University of Liverpool, Liverpool L69 7ZE, United Kingdom.

D J Payne (DJ)

University of Liverpool, Liverpool L69 7ZE, United Kingdom.

C Touramanis (C)

University of Liverpool, Liverpool L69 7ZE, United Kingdom.

A J Bevan (AJ)

Queen Mary, University of London, London E1 4NS, United Kingdom.

F Di Lodovico (F)

Queen Mary, University of London, London E1 4NS, United Kingdom.

R Sacco (R)

Queen Mary, University of London, London E1 4NS, United Kingdom.

G Cowan (G)

University of London, Royal Holloway and Bedford New College, Egham, Surrey TW20 0EX, United Kingdom.

Sw Banerjee (S)

University of Louisville, Louisville, Kentucky 40292, USA.

D N Brown (DN)

University of Louisville, Louisville, Kentucky 40292, USA.

C L Davis (CL)

University of Louisville, Louisville, Kentucky 40292, USA.

A G Denig (AG)

Johannes Gutenberg-Universität Mainz, Institut für Kernphysik, D-55099 Mainz, Germany.

W Gradl (W)

Johannes Gutenberg-Universität Mainz, Institut für Kernphysik, D-55099 Mainz, Germany.

K Griessinger (K)

Johannes Gutenberg-Universität Mainz, Institut für Kernphysik, D-55099 Mainz, Germany.

A Hafner (A)

Johannes Gutenberg-Universität Mainz, Institut für Kernphysik, D-55099 Mainz, Germany.

K R Schubert (KR)

Johannes Gutenberg-Universität Mainz, Institut für Kernphysik, D-55099 Mainz, Germany.

R J Barlow (RJ)

University of Manchester, Manchester M13 9PL, United Kingdom.

G D Lafferty (GD)

University of Manchester, Manchester M13 9PL, United Kingdom.

R Cenci (R)

University of Maryland, College Park, Maryland 20742, USA.

A Jawahery (A)

University of Maryland, College Park, Maryland 20742, USA.

D A Roberts (DA)

University of Maryland, College Park, Maryland 20742, USA.

R Cowan (R)

Massachusetts Institute of Technology, Laboratory for Nuclear Science, Cambridge, Massachusetts 02139, USA.

S H Robertson (SH)

Institute of Particle Physics, Montréal, Québec H3A 2T8, Canada.
McGill University, Montréal, Québec H3A 2T8, Canada.

R M Seddon (RM)

Institute of Particle Physics, Montréal, Québec H3A 2T8, Canada.

N Neri (N)

INFN Sezione di Milano, I-20133 Milano, Italy.

F Palombo (F)

INFN Sezione di Milano, I-20133 Milano, Italy.
Dipartimento di Fisica, Università di Milano, I-20133 Milano, Italy.

L Cremaldi (L)

University of Mississippi, University, Mississippi 38677, USA.

R Godang (R)

University of Mississippi, University, Mississippi 38677, USA.

D J Summers (DJ)

University of Mississippi, University, Mississippi 38677, USA.

P Taras (P)

Université de Montréal, Physique des Particules, Montréal, Québec H3C 3J7, Canada.

G De Nardo (G)

INFN Sezione di Napoli and Dipartimento di Scienze Fisiche, Università di Napoli Federico II, I-80126 Napoli, Italy.

C Sciacca (C)

INFN Sezione di Napoli and Dipartimento di Scienze Fisiche, Università di Napoli Federico II, I-80126 Napoli, Italy.

G Raven (G)

NIKHEF, National Institute for Nuclear Physics and High Energy Physics, NL-1009 DB Amsterdam, Netherlands.

C P Jessop (CP)

University of Notre Dame, Notre Dame, Indiana 46556, USA.

J M LoSecco (JM)

University of Notre Dame, Notre Dame, Indiana 46556, USA.

K Honscheid (K)

Ohio State University, Columbus, Ohio 43210, USA.

R Kass (R)

Ohio State University, Columbus, Ohio 43210, USA.

A Gaz (A)

INFN Sezione di Padova, I-35131 Padova, Italy.

M Margoni (M)

INFN Sezione di Padova, I-35131 Padova, Italy.
Dipartimento di Fisica, Università di Padova, I-35131 Padova, Italy.

M Posocco (M)

INFN Sezione di Padova, I-35131 Padova, Italy.

G Simi (G)

INFN Sezione di Padova, I-35131 Padova, Italy.
Dipartimento di Fisica, Università di Padova, I-35131 Padova, Italy.

F Simonetto (F)

INFN Sezione di Padova, I-35131 Padova, Italy.
Dipartimento di Fisica, Università di Padova, I-35131 Padova, Italy.

R Stroili (R)

INFN Sezione di Padova, I-35131 Padova, Italy.
Dipartimento di Fisica, Università di Padova, I-35131 Padova, Italy.

S Akar (S)

Laboratoire de Physique Nucléaire et de Hautes Energies, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, F-75252 Paris, France.

E Ben-Haim (E)

Laboratoire de Physique Nucléaire et de Hautes Energies, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, F-75252 Paris, France.

M Bomben (M)

Laboratoire de Physique Nucléaire et de Hautes Energies, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, F-75252 Paris, France.

G R Bonneaud (GR)

Laboratoire de Physique Nucléaire et de Hautes Energies, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, F-75252 Paris, France.

G Calderini (G)

Laboratoire de Physique Nucléaire et de Hautes Energies, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, F-75252 Paris, France.

J Chauveau (J)

Laboratoire de Physique Nucléaire et de Hautes Energies, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, F-75252 Paris, France.

G Marchiori (G)

Laboratoire de Physique Nucléaire et de Hautes Energies, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, F-75252 Paris, France.

J Ocariz (J)

Laboratoire de Physique Nucléaire et de Hautes Energies, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, F-75252 Paris, France.

M Biasini (M)

Dipartimento di Fisica, Università di Perugia, I-06123 Perugia, Italy.

E Manoni (E)

INFN Sezione di Perugia, I-06123 Perugia, Italy.

A Rossi (A)

INFN Sezione di Perugia, I-06123 Perugia, Italy.

G Batignani (G)

INFN Sezione di Pisa, I-56127 Pisa, Italy.
Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy.

S Bettarini (S)

INFN Sezione di Pisa, I-56127 Pisa, Italy.
Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy.

M Carpinelli (M)

INFN Sezione di Pisa, I-56127 Pisa, Italy.
Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy.

G Casarosa (G)

INFN Sezione di Pisa, I-56127 Pisa, Italy.
Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy.

M Chrzaszcz (M)

INFN Sezione di Pisa, I-56127 Pisa, Italy.

F Forti (F)

INFN Sezione di Pisa, I-56127 Pisa, Italy.
Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy.

M A Giorgi (MA)

INFN Sezione di Pisa, I-56127 Pisa, Italy.
Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy.

A Lusiani (A)

INFN Sezione di Pisa, I-56127 Pisa, Italy.
Scuola Normale Superiore di Pisa, I-56127 Pisa, Italy.

B Oberhof (B)

INFN Sezione di Pisa, I-56127 Pisa, Italy.
Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy.

E Paoloni (E)

INFN Sezione di Pisa, I-56127 Pisa, Italy.
Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy.

M Rama (M)

INFN Sezione di Pisa, I-56127 Pisa, Italy.

G Rizzo (G)

INFN Sezione di Pisa, I-56127 Pisa, Italy.
Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy.

J J Walsh (JJ)

INFN Sezione di Pisa, I-56127 Pisa, Italy.

L Zani (L)

INFN Sezione di Pisa, I-56127 Pisa, Italy.
Dipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy.

A J S Smith (AJS)

Princeton University, Princeton, New Jersey 08544, USA.

F Anulli (F)

INFN Sezione di Roma, I-00185 Roma, Italy.

R Faccini (R)

INFN Sezione di Roma, I-00185 Roma, Italy.
Dipartimento di Fisica, Università di Roma La Sapienza, I-00185 Roma, Italy.

F Ferrarotto (F)

INFN Sezione di Roma, I-00185 Roma, Italy.

F Ferroni (F)

INFN Sezione di Roma, I-00185 Roma, Italy.

A Pilloni (A)

INFN Sezione di Roma, I-00185 Roma, Italy.
Dipartimento di Fisica, Università di Roma La Sapienza, I-00185 Roma, Italy.

G Piredda (G)

INFN Sezione di Roma, I-00185 Roma, Italy.

C Bünger (C)

Universität Rostock, D-18051 Rostock, Germany.

S Dittrich (S)

Universität Rostock, D-18051 Rostock, Germany.

O Grünberg (O)

Universität Rostock, D-18051 Rostock, Germany.

M Heß (M)

Universität Rostock, D-18051 Rostock, Germany.

T Leddig (T)

Universität Rostock, D-18051 Rostock, Germany.

C Voß (C)

Universität Rostock, D-18051 Rostock, Germany.

R Waldi (R)

Universität Rostock, D-18051 Rostock, Germany.

T Adye (T)

Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, United Kingdom.

F F Wilson (FF)

Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, United Kingdom.

S Emery (S)

IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France.

G Vasseur (G)

IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France.

D Aston (D)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

C Cartaro (C)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

M R Convery (MR)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

J Dorfan (J)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

W Dunwoodie (W)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

M Ebert (M)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

R C Field (RC)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

B G Fulsom (BG)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

M T Graham (MT)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

C Hast (C)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

W R Innes (WR)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

P Kim (P)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

D W G S Leith (DWGS)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

S Luitz (S)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

D B MacFarlane (DB)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

D R Muller (DR)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

H Neal (H)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

B N Ratcliff (BN)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

A Roodman (A)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

M K Sullivan (MK)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

J Va'vra (J)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

W J Wisniewski (WJ)

SLAC National Accelerator Laboratory, Stanford, California 94309, USA.

M V Purohit (MV)

University of South Carolina, Columbia, South Carolina 29208, USA.

J R Wilson (JR)

University of South Carolina, Columbia, South Carolina 29208, USA.

A Randle-Conde (A)

Southern Methodist University, Dallas, Texas 75275, USA.

S J Sekula (SJ)

Southern Methodist University, Dallas, Texas 75275, USA.

H Ahmed (H)

St. Francis Xavier University, Antigonish, Nova Scotia B2G 2W5, Canada.

M Bellis (M)

Stanford University, Stanford, California 94305, USA.

P R Burchat (PR)

Stanford University, Stanford, California 94305, USA.

E M T Puccio (EMT)

Stanford University, Stanford, California 94305, USA.

M S Alam (MS)

State University of New York, Albany, New York 12222, USA.

J A Ernst (JA)

State University of New York, Albany, New York 12222, USA.

R Gorodeisky (R)

Tel Aviv University, School of Physics and Astronomy, Tel Aviv 69978, Israel.

N Guttman (N)

Tel Aviv University, School of Physics and Astronomy, Tel Aviv 69978, Israel.

D R Peimer (DR)

Tel Aviv University, School of Physics and Astronomy, Tel Aviv 69978, Israel.

A Soffer (A)

Tel Aviv University, School of Physics and Astronomy, Tel Aviv 69978, Israel.

S M Spanier (SM)

University of Tennessee, Knoxville, Tennessee 37996, USA.

J L Ritchie (JL)

University of Texas at Austin, Austin, Texas 78712, USA.

R F Schwitters (RF)

University of Texas at Austin, Austin, Texas 78712, USA.

J M Izen (JM)

University of Texas at Dallas, Richardson, Texas 75083, USA.

X C Lou (XC)

University of Texas at Dallas, Richardson, Texas 75083, USA.

F Bianchi (F)

INFN Sezione di Torino, I-10125 Torino, Italy.
Dipartimento di Fisica, Università di Torino, I-10125 Torino, Italy.

F De Mori (F)

INFN Sezione di Torino, I-10125 Torino, Italy.
Dipartimento di Fisica, Università di Torino, I-10125 Torino, Italy.

A Filippi (A)

INFN Sezione di Torino, I-10125 Torino, Italy.

D Gamba (D)

INFN Sezione di Torino, I-10125 Torino, Italy.
Dipartimento di Fisica, Università di Torino, I-10125 Torino, Italy.

L Lanceri (L)

INFN Sezione di Trieste and Dipartimento di Fisica, Università di Trieste, I-34127 Trieste, Italy.

L Vitale (L)

INFN Sezione di Trieste and Dipartimento di Fisica, Università di Trieste, I-34127 Trieste, Italy.

F Martinez-Vidal (F)

IFIC, Universitat de Valencia-CSIC, E-46071 Valencia, Spain.

A Oyanguren (A)

IFIC, Universitat de Valencia-CSIC, E-46071 Valencia, Spain.

J Albert (J)

University of Victoria, Victoria, British Columbia V8W 3P6, Canada.

A Beaulieu (A)

University of Victoria, Victoria, British Columbia V8W 3P6, Canada.

F U Bernlochner (FU)

University of Victoria, Victoria, British Columbia V8W 3P6, Canada.

G J King (GJ)

University of Victoria, Victoria, British Columbia V8W 3P6, Canada.

R Kowalewski (R)

University of Victoria, Victoria, British Columbia V8W 3P6, Canada.

T Lueck (T)

University of Victoria, Victoria, British Columbia V8W 3P6, Canada.

I M Nugent (IM)

University of Victoria, Victoria, British Columbia V8W 3P6, Canada.

J M Roney (JM)

University of Victoria, Victoria, British Columbia V8W 3P6, Canada.

R J Sobie (RJ)

Institute of Particle Physics, Victoria, British Columbia V8W 3P6, Canada.
University of Victoria, Victoria, British Columbia V8W 3P6, Canada.

N Tasneem (N)

University of Victoria, Victoria, British Columbia V8W 3P6, Canada.

T J Gershon (TJ)

Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom.

P F Harrison (PF)

Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom.

T E Latham (TE)

Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom.

R Prepost (R)

University of Wisconsin, Madison, Wisconsin 53706, USA.

S L Wu (SL)

University of Wisconsin, Madison, Wisconsin 53706, USA.

Classifications MeSH