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

Authors
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 GAN KK HONSCHEID K KAGAN H KASS R LEE J MALCHOW R SUNG M WHITE C ZOELLER MM BUTLER F FU X NEMATI B ROSS WR SKUBIC P WOOD M BISHAI M FAST J GERNDT E HINSON JW MCILWAIN RL MIAO T MILLER DH MODESITT M PAYNE D SHIBATA EI SHIPSEY IPJ WANG PN BATTLE M ERNST J GIBBONS L KWON Y ROBERTS S THORNDIKE EH WANG CH DOMINICK J LAMBRECHT M SANGHERA S SHELKOV V SKWARNICKI T STROYNOWSKI R VOLOBOUEV I WEI G ZADOROZHNY P ARTUSO M GAO M GOLDBERG M HE D HORWITZ N MONETI GC MOUNTAIN R MUHEIM F MUKHIN Y PLAYFER S ROZEN Y STONE S XING X ZHU G BARTELT J CSORNA SE EGYED Z JAIN V GIBAUT D KINOSHITA K POMIANOWSKI P BARISH B CHADHA M CHAN S COWEN DF EIGEN G MILLER JS OGRADY C URHEIM J WEINSTEIN AJ ATHANAS M BROWER W MASEK G PAAR HP GRONBERG J KUTSCHKE R MENARY S MORRISON RJ NAKANISHI S NELSON HN NELSON TK QIAO C RICHMAN JD RYD A SPERKA D TAJIMA H WITHERELL MS BALEST R CHO K FORD WT JOHNSON DR LINGEL K LOHNER M RANKIN P SMITH JG ALEXANDER JP BEBEK C BERKELMAN K BLOOM K BROWDER TE CASSEL DG CHO HA COFFMAN DM CROWCROFT DS DRELL PS DUMAS DJ EHRLICH R GAIDAREV P GARCIASCIVERES M GEISER B GITTELMAN B GRAY SW HARTILL DL HELTSLEY BK HENDERSON S JONES CD JONES SL KANDASWAMY J KATAYAMA N KIM PC KREINICK DL LUDWIG GS MASUI J MEVISSEN J MISTRY NB NG CR NORDBERG E PATTERSON JR PETERSON D RILEY D SALMAN S SAPPER M WURTHWEIN F AVERY P FREYBERGER A RODRIGUEZ J YANG S YELTON J CINABRO D LIU T SAULNIER M WILSON R YAMAMOTO H
Citation
T. Bergfeld et al., OBSERVATION OF D(1)(2420)+ AND D(2)(ASTERISK)(2460)+, Physics letters. Section B, 340(3), 1994, pp. 194-204
Citations number
22
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
340
Issue
3
Year of publication
1994
Pages
194 - 204
Database
ISI
SICI code
0370-2693(1994)340:3<194:OODAD>2.0.ZU;2-I
Abstract
Using the CLEO II detector at CESR, we have observed two charmed state s, where the higher mass state decays to D0pi+ and to D0pi+, while th e lower mass state decays to D0pi+, but not to D0pi+, but not to D0pi +. The masses and widths were measured to be 2425 +/- 2 +/- 2 MeV/c2 a nd 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 sup port the identification of these states as the charged L = 1 D1 (2420) + and D2(2460)+, respectively. The isospin mass splittings between th ese 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+.