b → s + g
نویسندگان
چکیده
We present an exact α s calculation of the Wilson coefficients associated with the dipole moment operators. We also give an estimate of the branching ratio for b → sγ. We find that higher dimensional effects are under control within 9% for BR(b → sγ) = (4.3 ± 0.37) × 10 −4 .
منابع مشابه
بررسی آلودگی های انگلی ماهیان آکواریوم آب شیرین استان تهران
?lU: | |OI???@è?kâ?|?B? A??é? ?B??B?@??Aoü?ï@J y?pü? koAuPB? OùpA?. ?pf: ?????â| ?p? O?Bk??. c??A?BR: | |8001 ?CI? ?B?? @??Aoü???|?PIéU G? y{ â??? ?hPé?. oô}: | |K?uQ, GBè? ?B, @Gz{, ^zî, g??, kuP?Bû â?Ao}, ?Hl, ?é??, ?d??? y???, ??v? y?B ôI?çR ?p?CI? ?B?? Aq?Ep@è?kâ? A??é? Gpou? yl, GpA? Aü? ??E?oAqu?|A?lAï Aôë âvPp} ?p??J, Aqg?? âvPp} ?Bq? ôo?? @??r? @? GBâ??vB ô |Aq | uBüpA?lA?ùB G? kè...
متن کامل$G$-Weights and $p$-Local Rank
Let $k$ be field of characteristic $p$, andlet $G$ be any finite group with splitting field $k$. Assume that $B$ is a $p$-block of $G$.In this paper, we introduce the notion of radical $B$-chain $C_{B}$, and we show that the $p$-local rank of $B$ is equals the length of $C_{B}$. Moreover, we prove that the vertex of a simple $kG$-module $S$ is radical if and only if it has the same vertex of th...
متن کاملFinite groups with $X$-quasipermutable subgroups of prime power order
Let $H$, $L$ and $X$ be subgroups of a finite group$G$. Then $H$ is said to be $X$-permutable with $L$ if for some$xin X$ we have $AL^{x}=L^{x}A$. We say that $H$ is emph{$X$-quasipermutable } (emph{$X_{S}$-quasipermutable}, respectively) in $G$ provided $G$ has a subgroup$B$ such that $G=N_{G}(H)B$ and $H$ $X$-permutes with $B$ and with all subgroups (with all Sylowsubgroups, respectively) $...
متن کاملPhotochemical degradation of azure-b with sulphate radical ion generated by peroxydisulphate ion with cupric ion
In this paper, the photochemical degradation of azure-b by Cu2+/S2O82− process has beenpresented. Cu2+ as photocatalyst and S2O82− ion as photooxidant used in this process. Atextremely low concentrations, cupric ion showed true catalytic activity in the overall process.The influence of various parameters on the performance of the treatment process has beenconsidered, such as pH, concentration o...
متن کاملOn the Edge-Difference and Edge-Sum Chromatic Sum of the Simple Graphs
For a coloring $c$ of a graph $G$, the edge-difference coloring sum and edge-sum coloring sum with respect to the coloring $c$ are respectively $sum_c D(G)=sum |c(a)-c(b)|$ and $sum_s S(G)=sum (c(a)+c(b))$, where the summations are taken over all edges $abin E(G)$. The edge-difference chromatic sum, denoted by $sum D(G)$, and the edge-sum chromatic sum, denoted by $sum S(G)$, a...
متن کاملسبکهای مقابله با استرس شغلی و تعارض کار- خانواده
هدف پژوهش حاضر مقایسه‌ی تعارض کار- خانواده در افراد دارای الگوهای رفتار کاری سالم (G: الگوی سلامت و S: الگوی صرفه‌جو) و ناسالم (A: الگوی جاه طلب و B: الگوی فرسوده شغلی) است. بدین منظور 137 نفر از کارکنان شرکت پالایشگاه نفت امام خمینی شا‌زند به‌صورت تصادفی طبقه‌ای انتخاب شدند و به ابزارهای پژوهش پاسخ دادند. ابزارها عبارت بودند از: مقیاس تعارض کار خانواده و پرسشنامه رفتارها و الگوهای تجربی مرتب...
متن کامل