Observation of a narrow charm-strange meson D-sJ(+)(2632)-> D-s(+)eta and (DK+)-K-0
Tarih
2004Yazar
Gulmez, E
Simon, J
Sitnikov, AI
Skow, D
Smith, VJ
Srivastava, M
Steiner, V
Stepanov, V
Stutte, L
Svoiski, M
Terentyev, NK
Thomas, GP
Torres, I
Uvarov, LN
Vasiliev, AN
Vavilov, DV
Vazquez-Jauregui, E
Verebryusov, VS
Victorov, VA
Vishnyakov, VE
Vorobyov, AA
Vorwalter, K
You, J
Wenheng, Z
Shuchen, Z
Zukanovich-Funchal, R
Ozkorucuklu, Suat
Evdokimov, AV
Akgun, U
Alkhazov, G
Amaro-Reyes, J
Atamantchouk, AG
Ayan, AS
Balatz, MY
Bondar, NF
Cooper, PS
Dauwe, LJ
Davidenko, GV
Dersch, U
Dolgolenko, AG
Dzyubenko, GB
Edelstein, R
Emediato, L
Endler, AMF
Engelfried, J
Eschrich, I
Escobar, CO
Filimonov, IS
Garcia, FG
Gaspero, M
Giller, I
Golovtsov, VL
Gouffon, P
Kangling, H
Iori, M
Jun, SY
Kaya, M
Kilmer, J
Kim, VT
Kochenda, LM
Konorov, I
Kozhevnikov, AP
Krivshich, AG
Kruger, H
Kubantsev, MA
Kubarovsky, VP
Kulyavtsev, AI
Kuropatkin, NP
Kurshetsov, VF
Kushnirenko, A
Kwan, S
Lach, J
Lamberto, A
Landsberg, LG
Larin, I
Leikin, EM
Yunshan, L
Luksys, M
Lungov, T
Maleev, VP
Mao, D
Chensheng, M
Zhenlin, M
Mathew, P
Mattson, M
Matveev, V
McCliment, E
Moinester, MA
Molchanov, VV
Morelos, A
Nelson, KD
Nemitkin, AV
Neoustroev, PV
Newsom, C
Nilov, AP
Nurushev, SB
Ocherashvili, A
Onel, Y
Ozel, E
Penzo, A
Petrenko, SV
Pogodin, P
Procario, M
Ramberg, E
Rappazzo, GF
Razmyslovich, BV
Rud, VI
Russ, J
Schiavon, P
Üst veri
Tüm öğe kaydını gösterÖzet
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 (DK+)-K-0. 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 (DK+)-K-0. The decay width of this state is <17 MeV/c(2) at 90% confidence level. The relative branching ratio Gamma((DK+)-K-0)/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.
Koleksiyonlar
- Makale [92796]