Observation of a narrow charm-strange meson D(+)(sJ)(2632)-->D(+)(s)eta and D(0)K(+)

A V Evdokimov; U Akgun; G Alkhazov; J Amaro-Reyes; A G Atamantchouk; A S Ayan; M Y Balatz; N F Bondar; P S Cooper; L J Dauwe; G V Davidenko; U Dersch; A G Dolgolenko; G B Dzyubenko; R Edelstein; L Emediato; A M F Endler; J Engelfried; I Eschrich; C O Escobar; I S Filimonov; F G Garcia; M Gaspero; I Giller; V L Golovtsov; P Gouffon; E Gülmez; He Kangling; M Iori; S Y Jun; M Kaya; J Kilmer; V T Kim; L M Kochenda; I Konorov; A P Kozhevnikov; A G Krivshich; H Krüger; M A Kubantsev; V P Kubarovsky; A I Kulyavtsev; N P Kuropatkin; V F Kurshetsov; A Kushnirenko; S Kwan; J Lach; A Lamberto; L G Landsberg; I Larin; E M Leikin; Li Yunshan; M Luksys; T Lungov; V P Maleev; D Mao; Mao Chensheng; Mao Zhenlin; P Mathew; M Mattson; V Matveev; E McCliment; M A Moinester; V V Molchanov; A Morelos; K D Nelson; A V Nemitkin; P V Neoustroev; C Newsom; A P Nilov; S B Nurushev; A Ocherashvili; Y Onel; E Ozel; S Ozkorucuklu; A Penzo; S V Petrenko; P Pogodin; M Procario; E Ramberg; G F Rappazzo; B V Razmyslovich; V I Rud; J Russ; P Schiavon; J Simon; A I Sitnikov; D Skow; V J Smith; M Srivastava; V Steiner; V Stepanov; L Stutte; M Svoiski; N K Terentyev; G P Thomas; I Torres; L N Uvarov; A N Vasiliev; D V Vavilov; E Vázquez-Jáuregui; V S Verebryusov; V A Victorov; V E Vishnyakov; A A Vorobyov; K Vorwalter; J You; Zhao Wenheng; Zheng Shuchen; R Zukanovich-Funchal; SELEX

doi:10.1103/PhysRevLett.93.242001

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Observation of a narrow charm-strange meson D(+)(sJ)(2632)-->D(+)(s)eta and D(0)K(+)

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Observation of a narrow charm-strange meson D(+)(sJ)(2632)-->D(+)(s)eta and D(0)K(+)

A V Evdokimov, U Akgun, G Alkhazov, J Amaro-Reyes, A G Atamantchouk, A S Ayan, M Y Balatz, N F Bondar, P S Cooper, L J Dauwe, …

Physical review letters, Vol.93(24), 242001

12/10/2004

DOI: 10.1103/PhysRevLett.93.242001

PMID: 15697795

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Abstract

We report the first observation of a charm-strange meson D(+)(sJ)(2632) at a mass of 2632.5+/-1.7 MeV/c(2) in data from SELEX, the charm hadro-production experiment E781 at Fermilab. This state is seen in two decay modes, D(+)(s)eta and D0K+. In the D(+)(s)eta decay mode we observe a peak with 101 events over a combinatoric background of 54.9 events at a mass of 2635.4+/-3.3 MeV/c(2). There is a corresponding peak of 21 events over a background of 6.9 at 2631.5+/-2.0 MeV/c(2) in the decay mode D0K+. The decay width of this state is <17 MeV/c(2) at 90% confidence level. The relative branching ratio Gamma(D0K+)/Gamma(D(+)(s)eta) is 0.14+/-0.06. The mechanism that keeps this state narrow is unclear. Its decay pattern is also unusual, being dominated by the D(+)(s)eta decay mode.

Details

Title: Subtitle: Observation of a narrow charm-strange meson D(+)(sJ)(2632)-->D(+)(s)eta and D(0)K(+)
Creators: A V Evdokimov - Ball State University
U Akgun
G Alkhazov
J Amaro-Reyes
A G Atamantchouk
A S Ayan
M Y Balatz
N F Bondar
P S Cooper
L J Dauwe
G V Davidenko
U Dersch
A G Dolgolenko
G B Dzyubenko
R Edelstein
L Emediato
A M F Endler
J Engelfried
I Eschrich
C O Escobar
I S Filimonov
F G Garcia
M Gaspero
I Giller
V L Golovtsov
P Gouffon
E Gülmez
He Kangling
M Iori
S Y Jun
M Kaya
J Kilmer
V T Kim
L M Kochenda
I Konorov
A P Kozhevnikov
A G Krivshich
H Krüger
M A Kubantsev
V P Kubarovsky
A I Kulyavtsev
N P Kuropatkin
V F Kurshetsov
A Kushnirenko
S Kwan
J Lach
A Lamberto
L G Landsberg
I Larin
E M Leikin
Li Yunshan
M Luksys
T Lungov
V P Maleev
D Mao
Mao Chensheng
Mao Zhenlin
P Mathew
M Mattson
V Matveev
E McCliment
M A Moinester
V V Molchanov
A Morelos
K D Nelson
A V Nemitkin
P V Neoustroev
C Newsom
A P Nilov
S B Nurushev
A Ocherashvili
Y Onel
E Ozel
S Ozkorucuklu
A Penzo
S V Petrenko
P Pogodin
M Procario
E Ramberg
G F Rappazzo
B V Razmyslovich
V I Rud
J Russ
P Schiavon
J Simon
A I Sitnikov
D Skow
V J Smith
M Srivastava
V Steiner
V Stepanov
L Stutte
M Svoiski
N K Terentyev
G P Thomas
I Torres
L N Uvarov
A N Vasiliev
D V Vavilov
E Vázquez-Jáuregui
V S Verebryusov
V A Victorov
V E Vishnyakov
A A Vorobyov
K Vorwalter
J You
Zhao Wenheng
Zheng Shuchen
R Zukanovich-Funchal
SELEX
Resource Type: Journal article
Publication Details: Physical review letters, Vol.93(24), 242001
DOI: 10.1103/PhysRevLett.93.242001
PMID: 15697795
NLM abbreviation: Phys Rev Lett
ISSN: 0031-9007
eISSN: 1079-7114
Language: English
Date published: 12/10/2004
Academic Unit: Physics and Astronomy
Record Identifier: 9984200059102771

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