905 research outputs found
Note on new interesting baryon channels to measure the photon polarization in b -> s gamma
At LHC a large number of b-flavored baryons will be produced. In this note we
propose new baryon modes to determine the photon helicity of the penguin
transition . The decay has the
drawback that the , being neutral and long-lived, will escape
detection most of the time. To overcome this difficulty, transitions of the
type have been proposed, where
denotes an excited state decaying strongly within the detector into the clean
mode . The doublet , that decays weakly, has a number of good
features. The charged baryon will decay into the mode ,
where the ground state hyperon , although it will decay most of the time
outside the detector, can be detected because it is charged. We consider also
the decay of into , where a higher mass state
can decay strongly within the detector. We point out that the initial
transverse polarization of has to be known in all cases. To determine
this parameter through the transition , we distinguish
between different cases, and underline that in some situations one needs {\it
theoretical input} on the asymmetry parameter of the primary
decay. {\it A fortiori} the same considerations apply to the case of the
Fenomena Pelanggaran Kode Etik Jurnalistik Pasal 12 Tahun 2008 Di Media Online Manado Post
What is the ethic codes of journalistic, is not understand fully by the young journalists. They lack of understanding on plagiarism in particular. There are two cases remarkable to note for young journalists. Firstly, on the function of the ethic codes for journalists, and secondly, on the affectivity of carrying out the ethic code for journalists. Therefore, the young journalists has to learn and practices the ethic codes
Isospin dependence of 6He+p optical potential and the symmetry energy
A consistent folding analysis of the elastic p(6He,6He)p scattering and
charge exchange p(6He,6Li*)n reaction data measured at Elab=41.6A MeV has been
performed within the coupled channels formalism. We have used the isovector
coupling to link the isospin dependence of 6He+p optical potential to the cross
section of p(6He,6Li*)n reaction exciting the 0+ isobaric analog state (IAS) at
3.563 MeV in 6Li. Based on these results and the Hartree-Fock calculation of
asymmetric nuclear matter using the same isospin-dependent effective
nucleon-nucleon interaction, we were able to confirm that the most realistic
value of the symmetry energy Esym is around 31 MeV. Our analysis has also shown
that the measured charge exchange p(6He,6Li*)n data are quite sensitive to the
halo tail of the 6He density used in the folding calculation and the IAS of 6Li
is likely to have a halo structure similar to that established for the ground
state of 6He.Comment: Accepted for publication in Phys. Rev.
Analisa Performansi Sistem Komunikasi Single-Input Multiple-Output Pada Lingkungan Indoor Menggunakan WARP
Dalam sistem komunikasi nirkabel, salah satu permasalahan yang dihadapi adalah multipath fading. Hal ini mengakibatkan level daya yang bervariasi pada penerima sehingga terjadi outage ketika mengalami fading. Dalam lingkungan indoor, hal ini lebih sering terjadi karena hampir tidak ada line-of-sight antara pemancar dan penerima. Efek kanal multipath bisa diatasi dengan sistem komunikasi SIMO (Single-Input Multiple-Output). Sinyal yang diterima diolah menggunakan beberapa metode seperti Selection dan Maximal Ratio Combining dengan jumlah antena di penerima lebih dari satu. Implementasi juga bisa dilakukan pada WARP (Wireless Open-Access Research Platform) yang merupakan salah satu jenis SDR (Software Defined Radio). Modul tersebut digunakan sebagai pemancar dan penerima pada pengukuran kualitas performansi SIMO pada lingkungan indoor dengan metode-metode combining. Hasil unjuk kerja dibandingkan terhadap sistem SISO (Single-Input Single-Output). Hasil dari implementasi dan pengukuran pada penelitian ini menunjukan bahwa, dalam lingkungan indoor pada kondisi tertentu, sistem SIMO dengan metode selection combining memiliki diversity gain 2.3–2.5 dB, sedangkan maximal ratio combining memiliki diversity gain 2.5–4.6 dB lebih baik daripada SISO pada kondisi BER
Innovation management from fractal infinite paths integral point of view
While a mastery of management innovation is crucial for the future of the economy, to date, there is no theory able to base with objectivity the management of creativity and entrepreneurship. This absence is not due to the lack of methods but to ignorance of mathematical foundations which justify the paradigmatic transgression. These foundations exist nevertheless. It can be mentioned the fractal geometry and the role played by the singularities and correlations over long distances. In the set theory, let us mention Cohen's forcing methods and its engineering consequences through CK theory. In the categories theory, we can mention the principles of Kan extension herein applied by the mean of holomorphic analysis and the analytical extensions. All these methods are based on the recognition of the incompleteness of any structure axiomatically closed (Goedel). At the junction between the physics and the economy, the goal of the present work is to show that the lack of recognition of the role of singularities in this science must be searched in mental biases and the paradigms that affect our concept of equilibrium. We show that this concept must be generalized. If the criticism of the concept of equilibrium in economics is already known, it does not lead, quite as much, to a theory of innovation. We would like to address the issue of creativity by backing the reasoning by the questioning of the concept of equilibrium, using an analogy coming from the physics in fractal structures. The idea is to consider the equilibrium as some steady state limit of a fractional dynamics. The fractional dynamics is a dynamics controlled by non integer fractional equation. These equations will be considered in the Fourier space and by the means of their hyperbolic geodesics. Due to the intrinsic incompleteness of the fractality and of its cardinality, the thickening of the infinite will be used to show that there is no even physical balance but only pseudo-equilibria. The practical use of this observation leads to the design of a dynamic model of creativity, named DQPl (Dual Quality Planning), giving a topologic content to the innovation process. New principles of management of innovation emerge in naturally
Carcass acquisition and consumption by carnivores and hominins in middle pleistocene sites of Casablanca (Morocco)
The WAY theorem and the quantum resource theory of asymmetry
The WAY theorem establishes an important constraint that conservation laws
impose on quantum mechanical measurements. We formulate the WAY theorem in the
broader context of resource theories, where one is constrained to a subset of
quantum mechanical operations described by a symmetry group. Establishing
connections with the theory of quantum state discrimination we obtain optimal
unitaries describing the measurement of arbitrary observables, explain how
prior information can permit perfect measurements that circumvent the WAY
constraint, and provide a framework that establishes a natural ordering on
measurement apparatuses through a decomposition into asymmetry and charge
subsystems.Comment: 11 pages, 3 figure
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