Studies of the Cabibbo-suppressed decays D+->pi(0)l(+)nu and D+->eta e(+)nu(e)

被引：12

作者：

Bartelt, J

Csorna, SE

Jain, V

Marka, S

Freyberger, A

Godang, R

Kinoshita, K

Lai, IC

Pomianowski, P

Schrenk, S

Bonvicini, G

Cinabro, D

Greene, R

Perera, LP

Zhou, GJ

Barish, B

Chadha, M

Chan, S

Eigen, G

Miller, JS

OGrady, C

Schmidtler, M

Urheim, J

Weinstein, AJ

Wurthwein, F

Asner, DM

Bliss, DW

Brower, WS

Masek, G

Paar, HP

Sharma, V

Gronberg, J

Hill, TS

Kutschke, R

Lange, DJ

Menary, S

Morrison, RJ

Nelson, HN

Nelson, TK

Qiao, C

Richman, JD

Roberts, D

Ryd, A

Witherell, MS

Balest, R

Behrens, BH

Cho, K

Ford, WT

Park, H

Rankin, P

机构：

[1] VIRGINIA POLYTECH INST & STATE UNIV,BLACKSBURG,VA 24061

[2] WAYNE STATE UNIV,DETROIT,MI 48202

[3] CALTECH,PASADENA,CA 91125

[4] UNIV CALIF SAN DIEGO,LA JOLLA,CA 92093

[5] UNIV CALIF SANTA BARBARA,SANTA BARBARA,CA 93106

[6] UNIV COLORADO,BOULDER,CO 80309

[7] CORNELL UNIV,ITHACA,NY 14853

[8] UNIV FLORIDA,GAINESVILLE,FL 32611

[9] HARVARD UNIV,CAMBRIDGE,MA 02138

[10] UNIV HAWAII,HONOLULU,HI 96822

[11] UNIV ILLINOIS,CHAMPAIGN,IL 61801

[12] CARLETON UNIV,OTTAWA,ON K1S 5B6,CANADA

[13] MCGILL UNIV,MONTREAL,PQ H3A 2T8,CANADA

[14] ITHACA COLL,ITHACA,NY 14850

[15] UNIV KANSAS,LAWRENCE,KS 66045

[16] UNIV MINNESOTA,MINNEAPOLIS,MN 55455

[17] SUNY ALBANY,ALBANY,NY 12222

[18] OHIO STATE UNIV,COLUMBUS,OH 43210

[19] UNIV OKLAHOMA,NORMAN,OK 73019

[20] PURDUE UNIV,W LAFAYETTE,IN 47907

[21] UNIV ROCHESTER,ROCHESTER,NY 14627

[22] STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309

[23] SO METHODIST UNIV,DALLAS,TX 75275

[24] SYRACUSE UNIV,SYRACUSE,NY 13244

[25] UNIV TEXAS,AUSTIN,TX 78712

[26] BUDKER INST NUCL PHYS,RU-630090 NOVOSIBIRSK,RUSSIA

[27] LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94551

来源：

PHYSICS LETTERS B | 1997年 / 405卷 / 3-4期

关键词：

D O I：

10.1016/S0370-2693(97)00649-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using 4.8 fb(-1) of data taken with the CLEO II detector, the branching fraction for the Cabibbo suppressed decay D+ --> pi(0) iota(+)nu measured relative to the Cabibbo favored decay D+ --> K-0 iota(+)nu is found to be 0.046 +/- 0.014 +/- 0.017. Using upsilon cs and upsilon cd from unitarity constraints, we determine \f(+)(pi)(0)\f(+)(K)(0)\(2) = 0.9 +/- 0.3 +/- 0.3. We also present a 90% confidence level upper limit for the branching ratio of the decay D+ --> eta(+)nu(c) relative to that for D+ --> pi(0)e(+)nu(e) of 1.5. (C) 1997 Published by Elsevier Science B.V.

引用

页码：373 / 378

页数：6

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