Collisional Energy Loss of Non Asymptotic Jets in a QGP

We calculate the collisional energy loss suffered by a heavy (charm) quark created at a finite time within a Quark Gluon Plasma (QGP) in the classical linear response formalism as in Peigne {\it et al.} \cite{peigne}. We pay close attention to the problem of formulating a suitable current and the isolation of binding and radiative energy loss effects. We find that unrealistic large binding effects arising in previous formulations must be subtracted. The finite time correction is shown to be important only for very short length scales on the order of a Debye length. The overall energy loss is similar in magnitude to the energy loss suffered by a charge created in the asymptotic past. This result has significant implications for the relative contribution to energy loss from collisional and radiative sources and has important ramifications for the ``single electron puzzle'' at RHIC.Comment: 15 Pages, 11 figures, revte

Dinamika Pembauran Hukum Islam Di Palembang: Mengurai Isi Undang-undang Simbur Cahaya

Jurisprudence is one of the disciplines that become facts of history in appreciating the local culture. In this context, true Islamic law should be interpreted as a process, not a product monumental. Islamic law has characteristics very different from the law in the sense of modern jurisprudence. Islamic law was developed based on the revelation, in addition to human thought and also colored by local feature in addition to the universal characteristics. This article will discuss the dynamics of assimilation of Islamic law in Palembang with a case study Undang-Undang Simbur Cahaya.ملخص: الفقه هو واحد من التخصصات التي تصبح حقائق التاريخ في تقدير الثقافة المحلية. وفي هذا السياق، ينبغي تفسير الفقه صحيح لأن عملية وليس منتج ضخمة. الفقه أو الشريعة الإسلامية لها خصائص مختلفة جدا عن القانون بالمعنى الفقهي الحديث. وقد وضعت الشريعة الإسلامية على أساس الوحي، بالإضافة إلى الفكر البشري والملونة أيضا ميزة المحلية بالإضافة إلى خصائص عالمية. هذه المادة سوف تدرس ديناميات استيعاب الشريعة الإسلامية في دراسة حالة باليمبانج باليمبانج القانون العرفي

3D Jet Tomography of Twisted Strongly Coupled Quark Gluon Plasmas

The triangular enhancement of the rapidity distribution of hadrons produced in p+A reactions relative to p+p is a leading order in A^{1/3}/log(s) violation of longitudinal boost invariance at high energies. In A+A reactions this leads to a trapezoidal enhancement of the local rapidity density of produced gluons. The local rapidity gradient is proportional to the local participant number asymmetry, and leads to an effective rotation in the reaction plane. We propose that three dimensional jet tomography, correlating the long range rapidity and azimuthal dependences of the nuclear modification factor, R_{AA}(\eta,\phi,p_\perp; b>0), can be used to look for this intrinsic longitudinal boost violating structure of $A+A$ collisions to image the produced twisted strongly coupled quark gluon plasma (sQGP). In addition to dipole and elliptic azimuthal moments of R_{AA}, a significant high p_\perp octupole moment is predicted away from midrapidity. The azimuthal angles of maximal opacity and hence minima of R_{AA} are rotated away from the normal to the reaction plane by an `Octupole Twist' angle, \theta_3(\eta), at forward rapidities.Comment: 10 Pages, 16 Figures, RevTex, Replaced with Peer reviewed verion for PR

Knowledge Transmission among Preservation Practitioners in Dubai

The economic importance and strategic position of the Middle East have epistemologically twisted most of its true cultural recognition. Both late urban definition and mutual communications have crippled some of its Bedouin societies from proving their participation in global culture. Each society has some to share in human accumulative know-how, but geo-political environments and barriers have lots to do in such mutuality. Many investigations have proved effective transmission of knowledge, but also pointed out black and mysterious zones within the societies themselves. The main obstacle is generated from the oral Arabic culture itself, when episteme is conditioned with biological memory, synchronized interchange and ethical referrals. The necessity of scientific and standard approaches of archeological research and architectural preservation exist and is proven to be of value in preservation of architectural knowledge. However, it is distinctly a hard task to use such standards to challenge the fast urbanization and social developments of our time. While archeological research is apart from contemporary explanations, preservation research is proposed as being more important. Investigations on building concepts require in-depth analysis of habits and behaviors of both craftsmen and beneficiaries, which is a folkloric approach. The lack of linguistic research blocks sufficient use of traditional poetry, literature and folklore to reproduce evidence of technologies from the past. Obviously, the limited natural resources in the Arabian Peninsula have simplified both the architectural setting and construction methodologies and hidden the natural creativity or know-how of earlier societies. Unique architectural contributions need not be limited to definitions of monumental constructs or other impressive achievements. Rather, architecture is defined mainly by cultural and epistemological expressions. This is important in discovering the continuity and distribution of societies in human and global civilization. It is also important to include Middle Eastern architecture in the ongoing intensive identification of architectural perspectives. Despite the late attention that has been given to preservation activities in Arabic States in the Persian Gulf, it is time to start assessment and evaluation of architectural traditions to challenge the remarkably fast development that is occurring. Various organizational, social and political factors are involved in the few serious attempts that have been made. Interventions by ambitious ruling powers have alternatively supported or thwarted such efforts. Lessons can be learned from these examples that highlight effective approaches useful in maintaining the immovable heritage elements in underdeveloped countries. These elements contain most of the remaining important and creative features of human architectural inputs that now benefit most of the globe. International involvement may be drawn to fill scientific gaps and requirements, while paths for serious cooperation are blocked with either hesitation or insufficient awareness of the matter. Bridging the true knowledge needs not only willingness, but also serious identification of both obvious and unconscious motivations that rule decision-making and practice. The conclusions may support the ongoing development of methodologies and professional practices