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The role of polarized positrons and electrons in revealing fundamental interactions at the Linear Collider

2008; Deutsches Elektronen-Synchrotron DESY; Volume: 460; Issue: 4 Linguagem: Inglês

Gudrid Moortgat‐Pick, K. Abe, G. Alexander, B. Ananthanarayan, A.A. Babich, V. Bharadwaj, D. P. Barber, A. Bartl, A. Brachmann, S. Chen, J.A. Clarke, J.E. Clendenin, John Dainton, K. Desch, Markus Diehl, B. Dobos, T. Dorland, Herbi K. Dreiner, H. Eberl, John Ellis, Klaus Flöttmann, H. Fraas, F. Franco-Sollova, Fabian Franke, A. Freitas, J. J. Goodson, J. A. Gray, Aidong Han, S. Heinemeyer, S. Hesselbach, T. Hirose, K. Hohenwarter-Sodek, A. Juste Rozas, J. Kalinowski, T. Kernreiter, O. Kittel, Sabine Kraml, Ulrich Langenfeld, W. Majerotto, Arantxa Ruiz Martinez, H.-U. Martyn, A. Mikhailichenko, C. Milsténe, W. Menges, N. Meyners, K. Mönig, K. Moffeit, Stefano Moretti, Otto Nachtmann, F. Nagel, T. Nakanishi, U. Nauenberg, H. Nowak, T. Omori, P. Osland, А. А. Панков, N. Paver, R. Pitthan, R. Pöschl, W. Porod, Joseph Proulx, Peter Richardson, S. Riemann, Saurabh D. Rindani, T. G. Rizzo, Andreas Schälicke, P. Schüler, C. Schwanenberger, D J Scott, J.C. Sheppard, Ritesh K. Singh, A. Sopczak, H. Spiesberger, A. Stahl, H. Steiner, A. Wagner, Arne Weber, G. Weiglein, G. Wilson, M. Woods, P.M. Zerwas, J. Zhang, F. Zomer,

Particle Detector Development and Performance

The proposed International Linear Collider (ILC) is well-suited for discovering physics beyond the Standard Model and for precisely unraveling the structure of the underlying physics. The physics return can be maximized by the use of polarized beams. This report shows the paramount role of polarized beams and summarizes the benefits obtained from polarizing the positron beam, as well as the electron beam. The physics case for this option is illustrated explicitly by analyzing reference reactions in different physics scenarios. The results show that positron polarization, combined with the clean experimental environment provided by the linear collider, allows to improve strongly the potential of searches for new particles and the identification of their dynamics, which opens the road to resolve shortcomings of the Standard Model. The report also presents an overview of possible designs for polarizing both beams at the ILC, as well as for measuring their polarization.