The electro production of d* dibaryon

$d^*$ dibaryon study is a critical test of hadron interaction models. The electro production cross sections of $ed\to ed^*$ have been calculated based on the meson exchange current model and the cross section around 30 degree of 1 GeV electron in the laboratory frame is about 10 nb. The implication of this result for the $d^*$ dibaryon search has been discussed.Comment: 12 pages, 12 figures, Late

Elastic e-d Scattering Data and the Deuteron Wave Function

What range of momentum components in the deuteron wave function are available e d elastic scattering data sensitive to ? This question is addressed within the context of a model calculation of the deuteron form factors, based on realistic interactions and currents. It is shown that the data on the $A(q)$, $B(q)$, and $T_{20}(q)$ observables at $q \leq 6$ fm$^{-1}$ essentially probe momentum components up to $\simeq 4 m_\pi$.Comment: 5 figure

Genre-based Analysis of Students? Descriptive Text in the Tenth Grade Students of Man 2 Semarang

Desain penelitian ini menggunakan deskriptif kualitatif yang bertujuan untuk mendeskripsikan tulisan deskriptif siswa dengan analisis genre di kelas X-D MAN 2 Semarang.Instrument penelitian adalah tulisan deskriptif text siswa. Peneliti menganalisis lembar kerja siswa dengan mengidentifikasi generic structure dan language features dalam menulis teks deskriptif. Hasil analisis menunjukkan 75% dari persentase total siswa dapat menulis bagian identifikasidengan benar dan 100% siswa dapat menerapkan bagian deskripsi dalam penulisan teks deskriptif. Pada hasil analisis language features menunjukkan bahwa 100% dari total persentase siswa dapat mengaplikasikan penggunaan specific participant, simple present tense, dan kata sifat. Sedangkan 97% siswa dapat menerapkan penggunaan being verb dan noun phrase dengan sukses. Hasil ini menunjukkan bahwa analisis genre pada kelas X-D MAN 2 Semarang memperolehhasil yang memuaskan

Two-Pion Decay Widths of Excited Charm Mesons

The widths for $\pi\pi$ decay of the L=1 charm mesons are calculated by describing the pion coupling to light constituents quarks by the lowest order chiral interaction. The wavefunctions of the charm mesons are obtained as solutions to the covariant Blankenbecler-Sugar equation. These solutions correspond to an interaction Hamiltonian modeled as the sum of a linear scalar confining and a screened one-gluon exchange (OGE) interaction. This interaction induces a two-quark contribution to the amplitude for two-pion decay, which is found to interfere destructively with the single quark amplitude. For the currently known L=1 $D$ mesons, the total $\pi\pi$ decay widths are found to be $\sim 1$ MeV for the $D_1(2420)$ and $\sim 3$ MeV for the $D^*_2(2460)$ if the axial coupling of the constituent quark is taken to be $g_A^q=1$. The as yet undiscovered spin singlet $D_1^*$ state is predicted to have a larger width of 7 - 10 MeV for $\pi\pi$ decay.Comment: 20 pages, uses Feynmf Submitted to Nuclear Physics A, published versio

PENGARUH KOMPOSISI 2,4-D DAN BAP TERHADAP PEMBENTUKAN KALUS EKSPLAN PUCUK NILAM (POGOSTEMON CABLIN BENTH.) SECARA IN VITRO DENGAN PEMOTONGAN VERTIKAL

ABSTRAK Penelitian ini bertujuan untuk mengetahui pengaruh komposisi 2,4-D dan BAP terhadap pembentukan kalus eksplan pucuk nilam (Pogostemon cablin Benth) secara in vitro dengan pemotongan secara vertikal. Komposisi 2,4-D dan BAP dilakukan pada media Murashige & Skoog (MS) dengan 16 perlakukan (P0-P15) dan lima kali pengulangan (U1-U5). Parameter yang diukur adalah persentase eksplan pembentuk kalus, waktu kemunculan kalus (HST), berat kalus dan morfologi kalus. Hasil rata-rata yang didapatkan bahwa pemotongan eksplan secara vertikal mampu menginduksi kalus sebesar 1,5%. Waktu muncul kalus paling cepat didapatkan pada perlakuan P6U5 (1 ppm 2,4-D : 0,5 ppm BAP) dan P8U1 (0 ppm 2,4-D : 1 ppm BAP) pada 12 HST. Kalus yang memiliki massa paling berat didapatkan pada perlakuan P12U1 (0 ppm 2,4-D : 1,5 ppm BAP) yaitu 0,05 gram. Hasil juga menunjukkan bahwa kalus yang dihasilkan memiliki tekstur kompak (non friable) dan remah (friable) dengan warna kalus putih kecoklatan, cokelat, hingga cokelat kehitamanKata kunci : Pogostemon cablin Benth., Pemotongan eksplan secara vertikal, Kalus, 2,4-D, BAPABSTRACTThis study aims to determine the effect of 2,4-D and BAP composition for callus establishment from shoots of patchouly plant (Pogostemon cablin Benth) by in vitro with vertical cutting method. The composition of 2,4-D and BAP were performed on Murashige & Skoog (MS) media with 16 treatments (P0-P15) and five replications (U1-U5). The parameters that measured were percentage of callus forming explants, time appearance of callus (day after planting, DAP), weight of callus and the morphology of callus. The results indicated that the percentage showed that the vertical cutting method are able to induce callus formation by an average 1,5%. The fastest time appearance of callus (DAP) were obtained in P6U5 (1 ppm 2,4-D : 0.5 ppm BAP) and P8U1 (0 ppm 2,4-D : 1 ppm BAP) at 12 DAP. The heaviest callus were obtained in P12U1 (0 ppm 2,4-D : 1.5 ppm BAP) at 0.05 grams. The results also showed that the obtained callus had a non friable and friable texture with brownish-white, brown, to black-brown color. Keywords : Pogostemon cablin Benth., vertical cutting explant method, callus, 2,4-D, BA

Noncanonicaly Embedded Rational Map Soliton in Quantum SU(3) Skyrme Model

The quantum Skyrme model is considered in non canonical bases SU(3) > SO(3) for the state vectors. A rational map ansatz is used to describe the soliton with the topological number bigger than one. The canonical quantization of the Lagrangian generates in Hamiltonian five different "moments of inertia" and negative quantum mass corrections, which can stabilize the quantum soliton solution. Explicit expressions of the quantum Lagrangian and the Hamiltonian are derived for this model soliton.Comment: 11 RevTex4 pages, no figure

Observation of the Charge Symmetry Breaking d + d -> 4He + pi0 Reaction Near Threshold

We report the first observation of the charge symmetry breaking d + d -> 4He + pi0 reaction near threshold at the Indiana University Cyclotron Facility. Kinematic reconstruction permitted the separation of 4He + pi0 events from double radiative capture 4He + gamma + gamma events. We measured total cross sections for neutron pion production of 12.7 +- 2.2 pb at 228.5 MeV and 15.1 +- 3.1 pb at 231.8 MeV. The uncertainty is dominated by statistical errors.Comment: 7 pages, 2 figures, plain Te