Search for the rare decay KL→π0e+e- -: art. no. 021805

被引：93

作者：

Alavi-Harati, A

Alexopoulos, T

Arenton, M

Barbosa, RF

Barker, AR

Barrio, M

Bellantoni, L

Bellavance, A

Blucher, E

Bock, GJ

Bown, C

Bright, S

Cheu, E

Coleman, R

Corcoran, MD ^{[1
]}

Cox, B

Erwin, AR

Escobar, CO

Ford, R

Glazov, A

Golossanov, A

Gomes, RA

Gouffon, P

Graham, J

Hamm, J

Hanagaki, K

Hsiung, YB

Huang, H

Jejer, V

Jensen, DA

Kessler, R

Kobrak, HGE

Kotera, K

LaDue, J

Lai, N

Ledovskoy, A

McBride, PL

Monnier, E

Nelson, KS

Nguyen, H

Ping, H

Prasad, V

Qi, XR

Quinn, B

Ramberg, EJ

Ray, RE

Ronquest, M

Santos, E

Senyo, K

Shanahan, P

机构：

[1] Rice Univ, Houston, TX 77005 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 Estadual Campinas, BR-13083970 Campinas, SP, Brazil

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

[7] Univ Colorado, Boulder, CO 80309 USA

[8] Elmhurst Coll, Elmhurst, IL 60126 USA

[9] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[10] Osaka Univ, Osaka 5600043, Japan

[11] Univ Sao Paulo, BR-05315970 Sao Paulo, Brazil

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

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

[14] Univ Wisconsin, Madison, WI 53706 USA

[15] CPP CNRS, Marseille, France

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 02期

基金：

日本学术振兴会; 巴西圣保罗研究基金会; 美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.93.021805

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The KTeV/E799 experiment at Fermilab has searched for the rare kaon decay K-L-->pi(0)e(+)e(-) . This mode is expected to have a significant CP violating component. The measurement of its branching ratio could support the standard model or could indicate the existence of new physics. This Letter reports new results from the 1999-2000 data set. One event is observed with an expected background at 0.99+/-0.35 events. We set a limit on the branching ratio of 3.5x10(-10) at the 90% confidence level. Combining with the previous result based on the data set taken in 1997 yields the final KTeV result: BR(K-L-->pi(0)e(+)e(-))<2.8x10(-10) at 90% C.L.

引用

页码：021805 / 1

页数：4

共 21 条

[1]

Alavi-Harati A, 2003, PHYS REV D, V67, DOI [10.1103/PhysRevD.67.012005, 10.1103/PhysRevD.67.1120XX]

[2]

Alavi-Harati A, 2001, PHYS REV D, V64, DOI 10.1103/PhysRevD.64.012003

[3] Search for the decay KL → π0e+e- [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 ;

Fordyce, PM ;

Glazov, A ;

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 ;

Nelson, KS ;

Nguyen, H .

PHYSICAL REVIEW LETTERS, 2001, 86 (03) :397-401

[4] Measurement of the decay KL → π0γγ [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) :917-921

[5] Observation of the rare decay KS → π0e+e- [J].

Batley, JR ;

Kalmus, GE ;

Lazzeroni, C ;

Munday, DJ ;

Patel, M ;

Slater, MW ;

Wotton, SA ;

Arcidiacono, R ;

Bocquet, G ;

Ceccucci, A ;

Cundy, D ;

Doble, N ;

Falaleev, V ;

Gatignon, L ;

Gonidec, A ;

Grafström, P ;

Kubischta, W ;

Marchetto, F ;

Mikulec, I ;

Norton, A ;

Panzer-Steindel, B ;

Rubin, P ;

Wahl, H ;

Goudzovski, E ;

Gurev, D ;

Hristov, P ;

Kekelidze, V ;

Litov, L ;

Madigozhin, D ;

Molokanova, N ;

Potrebenikov, Y ;

Stoynev, S ;

Zinchenko, A ;

Monnier, E ;

Swallow, E ;

Winston, R ;

Sacco, R ;

Walker, A ;

Baldini, W ;

Dalpiaz, P ;

Frabetti, PL ;

Gianoli, A ;

Martini, M ;

Petrucci, F ;

Scarpa, M ;

Savrié, M ;

Bizzeti, A ;

Calvetti, M ;

Collazuol, G ;

Graziani, G .

PHYSICS LETTERS B, 2003, 576 (1-2) :43-54

[6] First lattice calculation of the electromagnetic operator amplitude ⟨π0|Qγ+|K0⟩ [J].

Becirevic, D ;

Lubicz, V ;

Martinelli, G ;

Mescia, F .

PHYSICS LETTERS B, 2001, 501 (1-2) :98-105

[7] Extracting short-distance physics from KL,S → π0e+e- decays [J].

Buchalla, G ;

D'Ambrosio, G ;

Isidori, G .

NUCLEAR PHYSICS B, 2003, 672 (1-2) :387-408

[8] The impact of universal extra dimensions on B→Xsγ, B→Xs gluon, B→Xsμ+μ-, KL→π0e+e- and ε′/ε [J].

Buras, AJ ;

Poschenrieder, A ;

Spranger, M ;

Weiler, A .

NUCLEAR PHYSICS B, 2004, 678 (1-2) :455-490

[9] Connections between ε′/ε and rare kaon decays in supersymmetry [J].

Buras, AJ ;

Colangelo, G ;

Isidori, G ;

Romanino, A ;

Silvestrini, L .

NUCLEAR PHYSICS B, 2000, 566 (1-2) :3-32

[10] The impact of universal extra dimensions on the unitarity triangle and rare K and B decays [J].

Buras, AJ ;

Spranger, M ;

Weiler, A .

NUCLEAR PHYSICS B, 2003, 660 (1-2) :225-268

← 1 2 3 →