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Search for the rare decay $\Lambda_{c}^{+} \to p\mu^+\mu^-$

A search for the flavor-changing neutral-current decay Λc+→pμ+μ- is reported using a data set corresponding to an integrated luminosity of 3.0  fb-1 collected by the LHCb Collaboration. No significant signal is observed outside of the dimuon mass regions around the ϕ and ω resonances, and an upper l...

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Heather Mckenzie, Watson, Nigel, Websdale, David, Weiden, Andreas, Weisser, Constantin, Whitehead, Mark, Wicht, Jean, Wilkinson, Guy, Wilkinson, Michael, Williams, Mark Richard James, Williams, Mike, Williams, Timothy, Wilson, Fergus, Wimberley, Jack, Winn, Michael Andreas, Wishahi, Julian, Wislicki, Wojciech, Witek, Mariusz, Wormser, Guy, Wotton, Stephen, Wyllie, Kenneth, Xie, Yuehong, Xu, Menglin, Xu, Qingnian, Xu, Zehua, Xu, Zhirui, Yang, Zhenwei, Yang, Zishuo, Yao, Yuezhe, Yin, Hang, Yu, Jiesheng, Yuan, Xuhao, Yushchenko, Oleg, Zarebski, Kristian Alexander, Zavertyaev, Mikhail, Zhang, Liming, Zhang, Yanxi, Zhelezov, Alexey, Zheng, Yangheng, Zhu, Xianglei, Zhukov, Valery, Zonneveld, Jennifer Brigitta, Zucchelli, Stefano
Lenguaje:eng
Publicado: 2017
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.97.091101
http://cds.cern.ch/record/2298975
Descripción
Sumario:A search for the flavor-changing neutral-current decay Λc+→pμ+μ- is reported using a data set corresponding to an integrated luminosity of 3.0  fb-1 collected by the LHCb Collaboration. No significant signal is observed outside of the dimuon mass regions around the ϕ and ω resonances, and an upper limit is placed on the branching fraction of B(Λc+→pμ+μ-)<7.7(9.6)×10-8 at  90%(95%) confidence level. A significant signal is observed in the ω dimuon mass region for the first time.