Evidence for the decay KL→μ+μ-γγ -: art. no. 112001

被引：8

作者：

Alavi-Harati, A

Albuquerque, IF

Alexopoulos, T

Arenton, M

Arisaka, K

Averitte, S

Barker, AR

Bellantoni, L

Bellavance, A

Belz, J

Ben-David, R

Bergman, DR

Blucher, E

Bock, GJ

Bown, C

Bright, S

Cheu, E

Childress, S

Coleman, R

Corcoran, MD

Corti, G

Cox, B

Crisler, MB

Erwin, AR

Ford, R

Glazov, A

Golossanov, A

Graham, G

Graham, J

Hagan, K

Halkiadakis, E

Hanagaki, K

Hazumi, M

Hidaka, S

Hsiung, YB

Jejer, V

Jennings, J

Jensen, DA

Kessler, R

Kobrak, HGE

LaDue, J

Lath, A ^{[1
]}

Ledovskoy, A

McBride, PL

McManus, AP

Mikelsons, P

Monnier, E

Nakaya, T

Nelson, KS

Nguyen, H

机构：

[1] Rutgers State Univ, Piscataway, NJ 08855 USA

[2] Univ Arizona, Tucson, AZ 85721 USA

[3] Univ Calif Los Angeles, Los Angeles, CA 90095 USA

[4] Univ Calif San Diego, La Jolla, CA 92093 USA

[5] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[6] Univ Colorado, Boulder, CO 80309 USA

[7] Elmhurst Coll, Elmhurst, IL 60126 USA

[8] Fermi Natl Accelerator Lab, Batavia, IL 60510 USA

[9] Osaka Univ, Osaka 560, Japan

[10] Rice Univ, Houston, TX 77005 USA

[11] Univ Virginia, Dept Phys, Charlottesville, VA 22901 USA

[12] Univ Virginia, Inst Nucl & Particle Phys, Charlottesville, VA 22901 USA

[13] Univ Wisconsin, Madison, WI 53706 USA

来源：

PHYSICAL REVIEW D | 2000年 / 62卷 / 11期

关键词：

D O I：

10.1103/PhysRevD.62.112001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have observed the decay K-L-->mu (+)mu (-)gamma gamma at the KTeV experiment at Fermilab. This decay presents a formidable background to the search for new physics in K-L-->pi (0)mu (+)mu (-). The 1997 data yielded a sample of 4 signal events, with an expected background of 0.155+/-0.081 events. The branching ratio is beta (K-L -->mu (+)mu (-)gamma gamma)= [10.4(-5.9)(+7.5) (stat)+/- 0.7 (syst)] x 10(-9) with m(gamma gamma)greater than or equal to1 MeV/c(2), consistent with a QED calculation which predicts (9.1+/-0.8) x 10(-9).

引用

页数：5

共 12 条

[1] Measurement of the branching ratio of π0 → e+e- using KL → 3π0 decays in flight [J].

Alavi-Harati, A ;

Albuquerque, IF ;

Alexopoulos, T ;

Arenton, M ;

Arisaka, K ;

Averitte, S ;

Barker, AR ;

Bellantoni, L ;

Bellavance, A ;

Belz, J ;

Ben-David, R ;

Bergman, DR ;

Blucher, E ;

Bock, GJ ;

Bown, C ;

Bright, S ;

Cheu, E ;

Childress, S ;

Coleman, R ;

Corcoran, MD ;

Corti, G ;

Cox, B ;

Crisler, MB ;

Erwin, AR ;

Ford, R ;

Golossanov, A ;

Graham, G ;

Graham, J ;

Hagan, K ;

Halkiadakis, E ;

Hanagaki, K ;

Hidaka, S ;

Hsiung, YB ;

Jejer, V ;

Jennings, J ;

Jensen, DA ;

Kessler, R ;

Kobrak, HGE ;

LaDue, J ;

Lath, A ;

Ledovskoy, A ;

McBride, PL ;

McManus, AP ;

Mikelsons, P ;

Monnier, E ;

Nakaya, T ;

Nauenberg, U ;

Nelson, KS ;

Nguyen, H ;

O'Dell, V .

PHYSICAL REVIEW LETTERS, 1999, 83 (05) :922-925

[2]

Alavi-Harati A, 2000, PHYS REV D, V61, DOI 10.1103/PhysRevD.61.072006

[3] Search for the decay KL→π0 μ+ μ- [J].

Alavi-Harati, A ;

Albuquerque, IF ;

Alexopoulos, T ;

Arenton, M ;

Arisaka, K ;

Averitte, S ;

Barker, AR ;

Bellantoni, L ;

Bellavance, A ;

Belz, J ;

Ben-David, R ;

Bergman, DR ;

Blucher, E ;

Bock, GJ ;

Bown, C ;

Bright, S ;

Cheu, E ;

Childress, S ;

Coleman, R ;

Corcoran, MD ;

Corti, G ;

Cox, B ;

Crisler, MB ;

Erwin, AR ;

Ford, R ;

Glazov, A ;

Golossanov, A ;

Graham, G ;

Graham, J ;

Hagan, K ;

Halkiadakis, E ;

Hanagaki, K ;

Hazumi, M ;

Hidaka, S ;

Hsiung, YB ;

Jejer, V ;

Jennings, J ;

Jensen, DA ;

Kessler, R ;

Kobrak, HGE ;

LaDue, J ;

Lath, A ;

Ledovskoy, A ;

McBride, PL ;

McManus, AP ;

Mikelsons, P ;

Monnier, E ;

Nakaya, T ;

Nelson, KS ;

Nguyen, H .

PHYSICAL REVIEW LETTERS, 2000, 84 (23) :5279-5282

[4] MEASUREMENT OF THE RATE OF THE DECAY KL-]E+E-GAMMA AND OBSERVATION OF A FORM-FACTOR IN THIS DECAY [J].

BARR, GD ;

CAROSI, R ;

COWARD, D ;

CUNDY, D ;

DOBLE, N ;

GATIGNON, L ;

GIBSON, V ;

GRAFSTROM, P ;

HAGELBERG, R ;

KESSELER, G ;

VANDERLANS, J ;

NELSON, HN ;

WAHL, H ;

BLACK, R ;

CANDLIN, DJ ;

MUIR, J ;

PEACH, KJ ;

BLUMER, H ;

HEINZ, R ;

KLEINKNECHT, K ;

MAYER, P ;

PANZER, B ;

RENK, B ;

ROHRER, H ;

AUGE, E ;

CHASE, RL ;

FOURNIER, D ;

HEUSSE, P ;

ICONOMIDOUFAYARD, L ;

HARRUS, I ;

SCHAFFER, AC ;

BIGI, A ;

CALAFIURA, P ;

CALVETTI, M ;

CASALI, R ;

CERRI, C ;

FANTECHI, R ;

MANNELLI, I ;

NAPPI, A ;

PIERAZZINI, GM ;

BURKHARDT, H ;

HOLDER, M ;

KREUTZ, A ;

QUAST, G ;

ROST, M ;

SANDER, HG ;

WEIHS, W ;

WERTHENBACH, R ;

ZECH, G .

PHYSICS LETTERS B, 1990, 240 (1-2) :283-288

[5] The KTeV hardware cluster counter [J].

Bown, C ;

Cheu, E ;

Dusatko, J ;

Sanders, H ;

Zeleznik, M .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1996, 369 (01) :248-254

[6] Measurement of the decay rate and the parameter αK* of the decay KL→μμγ [J].

Fanti, V ;

Lai, A ;

Musa, L ;

Nappi, A ;

Setzu, MG ;

Moore, RW ;

Munday, DJ ;

Parker, MA ;

Takach, SF ;

White, TO ;

Barr, G ;

Bocquet, G ;

Bremer, J ;

Ceccucci, A ;

Cogan, J ;

Cundy, D ;

Doble, N ;

Fischer, G ;

Funk, W ;

Gatignon, L ;

Gianoli, A ;

Gonidec, A ;

Grafstrom, P ;

Kubischta, W ;

Marzulli, V ;

Kesseler, G ;

Matheys, JP ;

Norton, A ;

Palestini, S ;

Panzer-Steindel, B ;

Taureg, H ;

Velasco, M ;

Vossnack, O ;

Wahl, H ;

Kekelidze, V ;

Kojevnikov, I ;

Potrebenikov, I ;

Tatichvili, G ;

Tkatchev, A ;

Bertolotto, L ;

Boyle, O ;

Hay, B ;

Mc Kay, NE ;

Oakland, G ;

Parsons, H ;

Peach, KJ ;

Talamonti, C ;

Walker, A ;

Dalpiaz, P ;

Duclos, J .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1997, 76 (04) :653-657

[7] BACKGROUND TO K-L(O)-]PI-O-EE FROM K-L(O)-]GAMMA-GAMMA-EE [J].

GREENLEE, HB .

PHYSICAL REVIEW D, 1990, 42 (11) :3724-3731

[8]

HANAGAKI K, 1998, THESIS U OSAKA JAPAN

[9] OBSERVATION OF THE DECAY MODE K0(L)-]GAMMA-GAMMA-EE [J].

MORSE, WM ;

LEIPUNER, LB ;

LARSEN, RC ;

JASTRZEMBSKI, E ;

ADAIR, RK ;

GREENLEE, HB ;

KASHA, H ;

MANNELLI, EB ;

OHL, KE ;

SCHMIDT, MP ;

VAGINS, MR ;

SCHWARZ, CB .

PHYSICAL REVIEW D, 1992, 45 (01) :36-41

[10] MEASUREMENT OF THE BRANCHING RATIO OF K-L-]E(+)E(-)GAMMAGAMMA [J].

NAKAYA, T ;

YAMANAKA, T ;

ARISAKA, K ;

ROBERTS, D ;

SLATER, W ;

WEAVER, M ;

BRIERE, RA ;

CHEU, E ;

HARRIS, DA ;

MCFARLAND, KS ;

ROODMAN, A ;

SCHWINGENHEUER, B ;

SOMALWAR, SV ;

WAH, YW ;

WINSTEIN, B ;

WINSTON, R ;

BARKER, AR ;

SWALLOW, EC ;

BOCK, GJ ;

COLEMAN, R ;

CRISLER, M ;

ENAGONIO, J ;

FORD, R ;

HSIUNG, YB ;

JENSEN, DA ;

RAMBERG, E ;

TSCHIRHART, R ;

COLLINS, EM ;

GOLLIN, GD ;

GU, P ;

HAAS, P ;

HOGAN, WP ;

KIM, SK ;

MATTHEWS, JN ;

MYUNG, SS ;

SCHNETZER, S ;

THOMSON, GB ;

ZOU, Y .

PHYSICAL REVIEW LETTERS, 1994, 73 (16) :2169-2172

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