two gamma event



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Abstract: I introduce a model-independent strategy to study narrow resonances which I apply to a heavy vector triplet of the Standard Model group for illustration. The method is based on a simplified phenomenological Lagrangian which reproduces a large class of explicit models. This allows me to derive robust phenomenological features and to identify the peculiarities of different explicit realizations. Limits on cross section times BR can be converted into bounds on a few relevant parameters in a fully analytic way, allowing for an interpretation in any given explicit model. I point out that a model-independent procedure to set limits must be based on purely on-shell quantities. Finite width effects altering the limits can be considerably reduced by focusing on the on-shell signal region.

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2014/mar/pappadopulo.txt ยท Last modified: 2014/02/21 19:53 by terning
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