Michele's Page

I am currently working as a post-doctoral fellow at the Weizmann Institute of Science which is located in Rehovot, Israel. I am working in the field of high energy particle physics where I am a member of the ZEUS Experiment. ZEUS is a collaboration of about 450 physicists who are running a large particle detector at the electron-proton collider HERA at DESY, located in Hamburg, Germany. The ZEUS detector is a sophisticated tool for studying the particle reactions provided by the high-energetic beams of the HERA accelerator. These beams are made of electrons and protons which are accelerated to high energies in opposite directions and then guided into collision inside the ZEUS detector. The electron is accelerated to a very high momentum and therefore can probe deeply into the proton, in a process called deep inelastic scattering(DIS), resolving its constituent quarks. The quarks inside the proton are bound together via the strong force which is mediated by the exchange of gluons. The nature of the interactions between the quarks and gluons is described by a theory called quantum chromodynamics(QCD). The importance of understanding the nature of QCD is evidenced by the awarding of the 2004 Nobel Prize in Physics for the 1973 discovery of asymptotic freedom in QCD. Today, studies are underway to probe the non-perturbative realm of QCD, where one of the least understood areas is the physics of hadronization. Hadronization is the evolution of the produced quarks into final-state hadrons.

I have recently joined the heavy flavor working group and I am working on an analysis of D+ mesons in photoproduction. In 2002, the ZEUS detector underwent several upgrades including the installation of a silicon microvertex detector (MVD). The MVD can discern between particles that originate from the interaction(primary) vertex and those that originate from a secondary vertex, such as the decay products of D+ mesons (kaons and pions). Using the secondary vertex as measured with the MVD allows for better tagging of D+ mesons that was previously available at ZEUS.

I received my Ph.D. from the University of Wisconsin in the Physics department in 2006. My thesis advisor was Prof. Wesley Smith. The title of my thesis is "The Energy Dependence of the Mean Charged Multiplicity in Deep Inelastic Scattering with ZEUS at HERA". I worked on an analysis that investigated the hadronization mechanism by searching for universal features in the properties of the final hadronic systems produced in reactions with different initial particles. For a more technical description see my analysis web page. (sorry, only accessible to ZEUS members), or one of my conference talks listed below. I was also a member of the ZEUS Calorimeter group (CAL), where my job was to periodically calibrate the calorimeter, solve problems, maintain hardware, and monitor the data quality. The Wisconsin group maintains the Calorimeter First Level Trigger (CFLT).

Click here for my Curriculum Vitae

Contact Information:

Michele L. Rosin
DESY - ZEUS Weizmann Group
Notkestrasse 85
22607 Hamburg, Germany
Work phone: +49 40 8998 3153
Work fax: +49 40 8998 3092

sumstine@mail.desy.de

Work Links

Conference Talks:

Personal Links: