Observação de eventos de dijatos de alto pT separados por uma lacuna de rapidez no contexto de BFKL no CMS

• Autor(a) principal: Amaral, Sheila Mara Silva do
• Data de Publicação: 2011
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/12842
• topic: Jets in CMS; Rapidity gap; BFKL; Jatos no CMS; Lacuna de rapidez; BFKL; CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::FISICA DAS PARTICULAS ELEMENTARES E CAMPOS

We present a study of dijets production with high transverse momentum separated by a large rapidity gap using data collected from CMS at √s = 7 TeV at low luminosity (1034cm-2s-1). In the framework of BFKL, a gluon ladder is exchanged in the t-channel of the partonic scattering. The above process was generated by HARDCOL (1), where the BFKL equation is solved at the leading logarithm order. The samples were simulated and reconstruction with the CMS software. As the dominant background, we have the overlap of a QCD event with pile-up events in the same bunch crossing. So, our goal is to observe the excess data in the background events. Through the study of the jets and the low activity in the gap region, we show feasibility of the observation of events with rapidity gap at √s = 7 TeV.