OBSERVATION OF D(1)(2420)+ AND D(2)(ASTERISK)(2460)+

被引：29

作者：

BERGFELD, T

EISENSTEIN, BI

GOLLIN, G

ONG, B

PALMER, M

SELEN, M

THALER, JJ

EDWARDS, KW

OGG, M

BELLERIVE, A

BRITTON, DI

HYATT, ERF

MACFARLANE, DB

PATEL, PM

SPAAN, B

SADOFF, AJ

AMMAR, R

BARINGER, P

BEAN, A

BESSON, D

COPPAGE, D

COPTY, N

DAVIS, R

HANCOCK, N

KELLY, M

KOTOV, S

KRAVCHENKO, I

KWAK, N

LAM, H

KUBOTA, Y

LATTERY, M

MOMAYEZI, M

NELSON, JK

PATTON, S

POLING, R

SAVINOV, V

SCHRENK, S

WANG, R

ALAM, MS

KIM, IJ

LING, Z

MAHMOOD, AH

ONEILL, JJ

SEVERINI, H

SUN, CR

WAPPLER, F

CRAWFORD, G

DAUBENMIER, CM

FULTON, R

FUJINO, D

机构：

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

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

[3] ITHACA COLL,ITHACA,NY 14850

[4] UNIV KANSAS,LAWRENCE,KS 66045

[5] UNIV MINNESOTA,MINNEAPOLIS,MN 55455

[6] SUNY ALBANY,ALBANY,NY 12222

[7] OHIO STATE UNIV,COLUMBUS,OH 43210

[8] UNIV OKLAHOMA,NORMAN,OK 73019

[9] PURDUE UNIV,W LAFAYETTE,IN 47907

[10] UNIV ROCHESTER,ROCHESTER,NY 14627

[11] SO METHODIST UNIV,DALLAS,TX 75275

[12] SYRACUSE UNIV,SYRACUSE,NY 13244

[13] VANDERBILT UNIV,NASHVILLE,TN 37240

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

[15] CALTECH,PASADENA,CA 91125

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

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

[18] UNIV COLORADO,BOULDER,CO 80309

[19] CORNELL UNIV,ITHACA,NY 14853

[20] UNIV FLORIDA,GAINESVILLE,FL 32611

[21] HARVARD UNIV,CAMBRIDGE,MA 02138

来源：

PHYSICS LETTERS B | 1994年 / 340卷 / 03期

关键词：

D O I：

10.1016/0370-2693(94)01348-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using the CLEO II detector at CESR, we have observed two charmed states, where the higher mass state decays to D0pi+ and to D*0pi+, while the lower mass state decays to D*0pi+, but not to D0pi+, but not to D0pi+. The masses and widths were measured to be 2425 +/- 2 +/- 2 MeV/c2 and 26(+8+4)-7-4 MeV/c2 for the lower mass state, and 2463 +/- 3 +/- 3 MeV/c2 and 27(+11+5)-8-5 MeV/c2 for the higher mass state. Properties of these states, including their decay angular distributions and spin-parity assignments have been studied. The results of this analysis support the identification of these states as the charged L = 1 D1 (2420)+ and D*2(2460)+, respectively. The isospin mass splittings between these states and their neutral partners have also been measured. This is the first full reconstruction of any decay mode of the D1(2420)+ and the first observation of the decay of D2* (2460)+ to D*0pi+.

引用

页码：194 / 204

页数：11

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