Search for rare and forbidden dilepton decays of the D+, Ds+, and D0 charmed mesons

被引：70

作者：

Aitala, EM

Amato, S ^{[1
]}

Anjos, JC

Appel, JA

Ashery, D

Banerjee, S

Bediaga, I

Blaylock, G

Bracker, SB

Burchat, PR

Burnstein, RA

Carter, T

Carvalho, HS

Copty, NK

Cremaldi, LM

Darling, C

Denisenko, K

Devmal, S

Fernandez, A

Fox, GF

Gagnon, P

Gobel, C

Gounder, K

Halling, AM

Herrera, G

Hurvits, G

James, C

Kasper, PA

Kwan, S

Langs, DC

Leslie, J

Lundberg, B

Magnin, J

MayTal-Beck, S

Meadows, B

Neto, JRTD

Mihalcea, D

Milburn, RH

de Miranda, JM

Napier, A

Nguyen, A

d'Oliveira, AB

O'Shaughnessy, K

Peng, KC

Perera, LP

Purohit, MV

Quinn, B

Radeztsky, S

Rafatian, A

Reay, NW

机构：

[1] Univ Mississippi, University, MS 38677 USA

[2] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil

[3] Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA

[4] Univ Cincinnati, Cincinnati, OH 45221 USA

[5] CINVESTAV, Mexico City 07000, DF, Mexico

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

[7] IIT, Chicago, IL 60616 USA

[8] Kansas State Univ, Manhattan, KS 66506 USA

[9] Univ Massachusetts, Amherst, MA 01003 USA

[10] Princeton Univ, Princeton, NJ 08544 USA

[11] Univ Autonoma Puebla, Puebla, Mexico

[12] Univ S Carolina, Columbia, SC 29208 USA

[13] Stanford Univ, Stanford, CA 94305 USA

[14] Tel Aviv Univ, IL-69978 Tel Aviv, Israel

[15] Tufts Univ, Medford, MA 02155 USA

[16] Univ Wisconsin, Madison, WI 53706 USA

[17] Yale Univ, New Haven, CT 06511 USA

来源：

PHYSICS LETTERS B | 1999年 / 462卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

charm; rare; forbidden; decay; dilepton;

D O I：

10.1016/S0370-2693(99)00902-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the results of a search for flavor-changing neutral current, lepton-flavor violating, and lepton-number violating decays of D+, D-s(+), and D-0 mesons (and their antiparticles) into modes containing muons and electrons. Using data from Fermilab charm hadroproduction experiment E791, we examine the pi ll and Kll decay modes of D+ and D-s(+) and the l(+)l(-) decay modes of D-0. No evidence for any of these decays is found. Therefore, we present branching-fraction upper limits at 90% confidence level for the 24 decay modes examined. Eight of these modes have no previously reported limits, and fourteen are reported with significant improvements over previously published results. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：401 / 409

页数：9

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