Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-01-06
Phys.Rev.D60:035008,1999
Physics
High Energy Physics
High Energy Physics - Phenomenology
16 page latex file including 5 eps figures
Scientific paper
10.1103/PhysRevD.60.035008
We study the dependence on $\tan\beta$ of the event kinematics of final states with $e^+e^- /\mu^+\mu^- /e^{\pm}\mu^{\mp} + E_T^{\rm miss} + jets$, as expected in $pp$ collisions at CERN LHC, within the framework of the minimal supergravity model. With increase of $\tan\beta$, the third generation sparticle masses $m_{\tilde{\tau}_1}$ and $m_{\tilde{b}_1}$ decrease due to the increase of the tau and bottom Yukawa couplings. As a result, gluino, stop, sbottom, chargino and neutralino decays to third generation particles and sparticles are enhanced. With $\tan\beta$ rising, we observe a characteristic change in the shape of the dilepton mass spectra in $e^+e^- /\mu^+\mu^- +E_T^{\rm miss} + jets$ versus $e^{\pm}\mu^{\mp} + E_T^{\rm miss} + jets$ final states, reflecting the presence of the decays $\tilde{\chi}_2^0\to \tilde{\ell}_{L,R}^{\pm}\ell^{\mp}\to \tilde{\chi}_1^0 \ell^+\ell^-, \tilde{\chi}_2^0\to \tilde{\chi}_1^0 \ell^+\ell^-$ and $\tilde{\chi}_2^0\to \tilde{\tau}^{\pm}_1\tau^{\mp}\to \tilde{\chi}_1^0 \tau^+ \tau^-$, $\tilde{\chi}_2^0\to \tau^+ \tau^- \tilde{\chi}_1^0$, respectively. We exploit this effect for constraining the value of $\tan\beta$.
Denegri Daniel
Majerotto Walter
Rurua L.
No associations
LandOfFree
Constraining the minimal supergravity model parameter tan(beta) by measuring the dilepton mass distribution at LHC does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Constraining the minimal supergravity model parameter tan(beta) by measuring the dilepton mass distribution at LHC, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constraining the minimal supergravity model parameter tan(beta) by measuring the dilepton mass distribution at LHC will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-201466