Photoproduction of Vector Mesons

9874653 ColeThe这个为期五年的教师早期职业发展（职业生涯）计划奖的研究组成部分将深入了解核子中夸克自由度的基本对称性，入射光子和目标核子之间的宇称交换的性质，并将触及核子的奇异内容，以及其他OZI回避过程。 与他的合作者，主要研究者（PI）将测量矢量介子的光生通过使用一束线偏振光子从两个CEBAF大接受光谱仪（CLAS）在大厅B的杰斐逊实验室和GRAAL探测器在欧洲同步辐射设施。 PI是三项获批实验E94-109、E98-109和E99-013的共同发言人，这些实验将在Jefferson Lab的Hall B进行。 有了高质量的线偏振光子束，以及这两个设施的4 π探测器，我们将把世界上的数据增加大约三个数量级。 这个丰富的数据库将使我们能够准确地测量子自旋0介子的角分布的演化，这些子介子是由母矢量介子衰变产生的，作为c. m的函数。能量、极角和方位角散射角的计算方法，并通过与模型无关的方法提取自旋密度矩阵元，获得了前所未有的高精度。 在他的家乡机构，PI一直积极参与发展科学组成部分，以代数为基础的预工程科学课程，努力提高物理和化学的认识，提高入学学生的留存率的目标。 PI正在以物理学生协会（SPS）的教师顾问的身份在他的部门内推广物理学。 在埃尔帕索社区的更广泛的背景下，他通过结合SPS和物理马戏团促进物理学; PI和几个本科生在UTEP和地区学校为观众进行了一系列令人兴奋的互动物理演示。 在埃尔帕索是通往拉丁美洲的门户，并且德克萨斯大学埃尔帕索分校的主要本科生人口中有66%是西班牙裔，建立实验核物理学的高素质研究计划将为西班牙裔学生提供独特的研究机会，他们传统上在物理学中代表性不足。 这项事业补助金的资金是在埃尔帕索德克萨斯大学建立和开展高素质中能核物理计划的关键一步。 此外，这项研究计划将提供一个有意义的和国家的最先进的本科生和硕士研究生的研究经验，以保持与NSF示范机构的卓越议程的使命。

9874653ColeThe research component of this five-year Faculty Early Career Development (CAREER) Program Award will yield insights into the underlying symmetry of the quark degrees of freedom in the nucleon, the nature of the parity exchange between the incident photon and target nucleon, and will touch upon the strangeness content of the nucleon, as well as other OZI-evading processes. With his collaborators, the Principal Investigator (PI) will measure the photoproduction of vector mesons by using a beam of linearly-polarized photons from both the CEBAF Large Acceptance Spectrometer (CLAS) in Hall B of Jefferson Lab and the GRAAL detector at the European Synchrotron Radiation Facility. The PI is a cospokesperson on three approved experiments, E94-109, E98-109, and E99-013, which will take place in Hall B of Jefferson Lab. With the high-quality beam of linearly-polarized photons provided, and the 4-pi detectors at these two facilities, we shall increase the world's data by a factor of approximately three orders of magnitude. This rich pool of data will allow us to accurately measure the evolution of the angular distributions of the daughter spin-0 mesons resulting from the decay of the parent vector mesons as functions of c.m. energy, and polar and azimuthal scattering angles with unprecented high precision by extracting the spin density matrix elements in a model-independent way. At his home institution, the PI has been actively engaged in developing the science component to an algebra-based pre-engineering science course in the effort to elevate awareness of physics and chemistry with the objective of increasing the retention rate of entering students. The PI is promoting physics within his department in the capacity of the faculty advisor to the Society of Physics Students (SPS). Within the wider context of the El Paso community, he is promoting physics by combining the SPS and the Physics Circus; the PI and several undergraduate students carry out a set of exciting and interactive physics demonstrations for audiences at UTEP and at area schools. In that El Paso is the gateway to Latin America, and that the student population of the primarily undergraduate University of Texas at El Paso is 66% Hispanic, establishing a high-caliber research program in experimental nuclear physics will provide unique research opportunities for Hispanic students, who traditionally have been underrepresented in physics. The funding for this CAREER grant is a crucial step towards establishing and carrying out a high-caliber medium-energy nuclear physics program at the University of Texas at El Paso. Furthermore, this research program will provide a meaningful and state-of-the-art undergraduate and master's student research experience in keeping with the mission of the NSF Model Institutions for Excellence agenda.