The Radiative rare decays B→K∗∗γB\to K^{**}\gamma in the light-cone QCD sum rule approach

We predict contributions of higher $K$-resonances to the radiative rare decays $b\to s\gamma$, in the framework of the QCD sum rules on the light cone, which combines the traditional QCD sum rule method with the description of final state mesons in terms of the light-cone wave functions of increasing twist. Our calculations are restricted to the leading twist-two operators for $K^*(892)$ and to the asymptotic wave function for the other $K^{**}$-mesons. Using experimental data on the semileptonic $\tau\to K^{**}\nu_{\tau}$ decays, we extract the corresponding decay constants for vector and axial-vector $K^{**}$-mesons. Based on our estimate of the transition form factor $F_1^{K^*(892)}(0)=0.32 \pm 0.06$ and the $K_2^*(1430)$ decay constant $f_{K_2^*(1430)}=(160\pm 20) MeV$, we find good agreement with experimental results. The two largest fractions of the inclusive $b\to s\gamma$ branching ratio are found to be $(10.0\pm 4.0)$ for $B\to K^*(892) \gamma$ and $(5.0\pm 2.0)$ for $B\to K_2^*(1430)\gamma$ decays. We also compare our results with the existing theoretical predictions.Comment: 29 pages, 20 figures, to be submitted to European Physical Journal

Analysis of the B→K2∗(1430),a2(1320),f2(1270)B \to K^*_2(1430), a_2(1320), f_2(1270) form-factors with light-cone QCD sum rules

In this article, we study the $B \to K^*_2(1430)$, $a_2(1320)$, $f_2(1270)$ form-factors with the light-cone QCD sum rules, where the $B$-meson light-cone distribution amplitudes are used. In calculations, we observe that the line-shapes of the $B$-meson light-cone distribution amplitude $\phi_+(\omega)$ have significant impacts on the values of the form-factors, and expect to obtain severe constraints on the parameters of the $B$-meson light-cone distribution amplitudes from the experimental data in the future.Comment: 19 pages, 6 figures, slight revisio

Branching Ratio and CP-asymmetry for B-> 1^{1}P_{1}gamma decays

We calculate the branching ratios for B_{d}^{0}->(b_{1},h_{1})gamma at next-to-leading order (NLO) of alpha_{s} where b_{1} and h_{1} are the corresponding radially excited axial vector mesons of rho and omega respectively. Using the SU(3)symmetry for the form factor, the branching ratio for B_{d}^{0}->(b_{1},h_{1})gamma is expressed in terms of the branching ratio of the B_{d}^{0}-> K_{1}gamma and it is found to be B(B_{d}^{0}->b_{1}gamma)=0.71* 10^{-6} and B(B_{d}^{0}-> h_{1}gamma) =0.74*10^{-6}. We also calculate direct CP asymmetry for these decays and find, in confirmity with the observations made in the literature, that the hard spectator contributions significantely reduces the asymmetry arising from the vertex corrections alone. The value of CP-asymmetry is 10% and is negative like rho and omega in the Standard Model.Comment: 10 pages, 2 figure

Phenomenological discussion of B→PVB\to P V decays in QCD improved factorization approach

Trying a global fit of the experimental branching ratios and CP-asymmetries of the charmless $B\to PV$ decays according to QCD factorization, we find it impossible to reach a satisfactory agreement, the confidence level (CL) of the best fit is smaller than .1 %. This failure reflects the difficulty to accommodate several large experimental branching ratios of the strange channels. Furthermore, experiment was not able to exclude a large direct CP asymmetry in $\bar {B}^0\to\rho^+ \pi^-$, which is predicted very small by QCD factorization. Proposing a fit with QCD factorization complemented by a charming-penguin inspired model we reach a best fit which is not excluded by experiment (CL of about 8 %) but is not fully convincing. These negative results must be tempered by the remark that some of the experimental data used are recent and might still evolve significantly.Comment: 8 pages, 2 figures (requires epsfig, psfrag),talk presented at the XXXVIIIth Rencontres de Moriond: Electroweak Interactions and Unified Theories,Les Arcs, France, March 15-22, 2003. To be published in the Proceeding

Use of ERTS data for a multidisciplinary analysis of Michigan resources

There are no author-identified significant results in this report

CP Violation in B -> pi+ pi- and the Unitarity Triangle

We analyze the extraction of weak phases from CP violation in $B\to\pi^+\pi^-$ decays. We propose to determine the unitarity triangle $(\bar\rho,\bar\eta)$ by combining the information on mixing induced CP violation in $B\to\pi^+\pi^-$, $S$, with the precision observable $\sin 2\beta$ obtained from the CP asymmetry in $B\to\psi K_S$. It is then possible to write down exact analytical expressions for $\bar\rho$ and $\bar\eta$ as simple functions of the observables $S$ and $\sin 2\beta$, and of the penguin parameters $r$ and $\phi$. As an application clean lower bounds on $\bar\eta$ and $1-\bar\rho$ can be derived as functions of $S$ and $\sin 2\beta$, essentially without hadronic uncertainty. Computing $r$ and $\phi$ within QCD factorization yields precise determinations of $\bar\rho$ and $\bar\eta$ since the dependence on $r$ and $\phi$ is rather weak. It is emphasized that the sensitivity to the phase $\phi$ enters only at second order and is extremely small for moderate values of this phase, predicted in the heavy-quark limit. Transparent analytical formulas are further given and discussed for the parameter $C$ of direct CP violation in $B\to\pi^+\pi^-$. We also discuss alternative ways to analyze $S$ and $C$ that can be useful if new physics affects $B_d$--$\bar B_d$ mixing. Predictions and uncertainties for $r$ and $\phi$ in QCD factorization are examined in detail. It is pointed out that a simultaneous expansion in $1/m_b$ and 1/N leads to interesting simplifications. At first order infrared divergences are absent, while the most important effects are retained. Independent experimental tests of the factorization framework are briefly discussed.Comment: 26 pages, 7 figure

Implications of the first observation of B→K1γB\to K_1\gamma

Implications of the recent new measurements of $B\to K_1\gamma$ by Belle are examined. It is shown that the new branching ratio \calB(B\to K_1(1270)\gamma) requires very large form factor compared to the theoretically predicted one. This is an opposite case to $B\to K^*\gamma$ where theory expected larger branching ratio. Possible origins of the discrepancy are discussed.Comment: 4 pages, 3 figure

OVER KREDIT MOBIL SECARA DI BAWAH TANGAN OLEH KONSUMEN BCA FINANCE DIHUBUNGKAN DENGAN UNDANG-UNDANG NOMOR 10 TAHUN 1998 TENTANG PERUBAHAN ATAS UNDANG-UNDANG NOMOR 7 TAHUN 1992 TENTANG PERBANKAN PERBANKAN JUNCTO BUKU III KUH PERDATA

Debitur yang sudah tidak bisa membayar angsuran kredit seringkali melakukan over kredit tanpa sepengetahuan pihak BCA Finance atau dilakukan secara di bawah tangan kepada pihak ketiga. Permasalahan yang timbul antara lain : Bagaimana perjanjian di bawah tangan dalam over kredit mobil yang dilakukan oleh konsumen BCA Finance Dihubungkan dengan Undang-Undang Nomor 10 Tahun 1998 tentang Perubahan atas Undang-Undang Nomor 7 Tahun 1992 Tentang Perbankan Juncto Buku III KUHPerdata, Bagaimana akibat hukum perjanjian di bawah tangan dalam over kredit mobil yang dilakukan oleh konsumen BCA Finance Dihubungkan dengan Undang-Undang Nomor 10 Tahun 1998 tentang Perubahan atas Undang-Undang Nomor 7 Tahun 1992 Tentang Perbankan Juncto Buku III KUHPerdata dan Bagaimana proses penyelesaian perjanjian di bawah tangan dalam over kredit mobil yang dilakukan oleh konsumen BCA Finance Dihubungkan dengan Undang-Undang Nomor 10 Tahun 1998 tentang Perubahan Atas Undang-Undang Nomor 7 Tahun 1992 tentang Perbankan Juncto Buku III KUHPerdata. Pengalihan objek kedit kepada pihak lain harus diberitahukan kepada pihak Finance. Pada pelaksanaan over kredit, pihak penjual dan pihak pembeli yang akan melanjutkan angsuran kredit harus mendapat persetujuan dari pihak Finance yang sebelumnya membiayai objek kredit. Penelitian ini menggunakan spesifikasi penelitian Deskriptif-Analitis, yaitu penelitian dengan menggambarkan secara sistematis, akurat, actual, dan menyeluruh mengenai over kredit mobil secara di bawah tangan yang dilakukan oleh konsumen BCA Finance dihubungkan dengan Undang- Undang Nomor 10 Tahun 1998 tentang Perubahan atas Undang-Undang Nomor 7 Tahun 1992 tentang Perbankan. Metode Pendekatan yang digunakan adalah Yuridis Normatif yaitu penelitian terhadap asas- asas hukum dilakukan dengan norma- norma hukum yang merupakan dasar untuk bertingkah laku. Tahap Penelitian yang digunakan yaitu melalui penelitian kepustakaan dan penelitian lapangan dengan melakukan wawancara pada BCA Finance. Hasil yang diperoleh dari penelitian diketahui bahwa over kredit mobil yang dilakukan oleh konsumen BCA Finance dilakukan secara di bawah tangan, debitur tetap bertanggung jawab atas pelunasan angsuran kredit hal ini sesuai dengan Pasal 1131 KUHPerdata bahwa segala kebendaan si berutang, baik yang bergerak maupun yang tidak bergerak, baik yang sudah ada maupun yang baru akan ada di kemudian hari menjadi tanggungan untuk segala perikatan perseorangan, konsumen BCA Finance telah melakukan wanprestasi berdasarkan Pasal 1238 KUHPerdata, Penyelesaian yang dilakukan oleh BCA Finance melalui lembaga non litigasi yaitu dengan proses mediasi yang kooperatif antara para pihak dengan tujuan penyelesaian para pihak. Kata Kunci: Perjanjian Di Bawah Tangan, Akibat Hukum, Proses Penyelesaian