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Journal of High Energy Physics

, 2014:59

First Online: 09 December 2014Received: 17 September 2014Accepted: 24 November 2014 Abstract

We discuss the direct production of light stringy states. Those states correspond to the lightest stringy excitations localized at the intersection of two D-brane stacks and their mass can be parametrically smaller than the string scale. Thus in a low string scale scenario one may observe stringy signatures at LHC even in the absence of the usual string resonances. We compute the tree level string scattering amplitude involving two gauge bosons and two such light stringy states. We give the squared amplitude summed over all polarization and gauge configuration and eventually apply the result to the quark sector of a D-brane realization of the Standard Model.

KeywordsStrings and branes phenomenology ArXiv ePrint: 1408.4810

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Autor: Pascal Anastasopoulos - Robert Richter

Fuente: https://link.springer.com/







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