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We discuss the scenario with gauge singlet fermions (right-handed neutrinos) accessible at the energy of the Large Hadron Collider. The singlet fermions generate tiny neutrino masses via the seesaw mechanism and also have sizable couplings…

High Energy Physics - Phenomenology · Physics 2014-11-20 Shigeki Matsumoto , Takehiro Nabeshima , Koichi Yoshioka

We investigate the prospects of discovering split Supersymmetry at a future 100 TeV proton-proton collider through the direct production of electroweakino next-to-lightest-supersymmetric-particles (NLSPs). We focus on signatures with…

High Energy Physics - Phenomenology · Physics 2015-06-23 Stefania Gori , Sunghoon Jung , Lian-Tao Wang , James D. Wells

A selection of recent searches for Supersymmetry conducted by the ATLAS and CMS collaborations is presented, summarizing the relevant results for inclusive squark and gluino production at the LHC. No indication for the existence of…

High Energy Physics - Experiment · Physics 2019-08-14 Alexander Mann

We use the three lepton and missing energy "trilepton" signature to search for chargino-neutralino production with 2.0 inverse femtobarns of integrated luminosity collected by the CDF II experiment at the Tevatron ppbar collider. We expect…

High Energy Physics - Experiment · Physics 2010-05-12 CDF Collaboration , T. Aaltonen

The potential of muon colliders to study a low-energy supersymmetry is addressed in the framework of the minimal supergravity model, whose predictions are first briefly surveyed. Foremost among the unique features of a muon collider is…

High Energy Physics - Phenomenology · Physics 2009-10-31 V. Barger

Motivated by the absence of any clear signal of physics beyond the Standard Model at the LHC after Run I, we discuss one possible slight hint of new physics and one non-minimal extension of the Standard Model. In the first part we provide a…

High Energy Physics - Phenomenology · Physics 2016-06-24 Christoffer Petersson

A search for non-resonant new phenomena, originating from either contact interactions or large extra spatial dimensions, has been carried out using events with two isolated electrons or muons. These events, produced at the LHC in…

High Energy Physics - Experiment · Physics 2013-01-08 ATLAS Collaboration

The aim of this paper is to showcase the novel multilepton ($nl + E\!\!\!\!/_T$, n = 3 - 5) signals, hitherto unexplored at the LHC, arising from the heavier electroweakinos, in several generic pMSSMs at the upcoming LHC experiments. We…

High Energy Physics - Phenomenology · Physics 2019-02-20 Amitava Datta , Nabanita Ganguly

Using an artificial neutral network we explore the parameter space of supergravity grand unified models consistent with the combined Fermilab E989 and Brookhaven E821 data on $(g-2)_\mu$. The analysis indicates that the region favored by…

High Energy Physics - Phenomenology · Physics 2021-09-08 Amin Aboubrahim , Michael Klasen , Pran Nath

A benchmark CP-violating supersymmetric scenario (known as 'CPX-scenario' in the literature) is studied in the context of the Large Hadron Collider (LHC). It is shown that the LHC, with low to moderate accumulated luminosity, will be able…

High Energy Physics - Phenomenology · Physics 2011-12-13 Priyotosh Bandyopadhyay

A possibility to observe TeV-scale gravity signals at the LHC is discussed. The ADD scenario with large extra dimensions is considered and its LHC discovery potential is derived studying by muon pairs with large invariant masses.

High Energy Physics - Phenomenology · Physics 2007-05-23 I. Golutvin , A. Sapronov , M. Savina , S. Shmatov

A search for supersymmetry is presented based on events with at least one photon, jets, and large missing transverse momentum produced in proton-proton collisions at a center-of-mass energy of 13 TeV. The data correspond to an integrated…

High Energy Physics - Experiment · Physics 2019-06-25 CMS Collaboration

A search for physics beyond the standard model in events with at least three charged leptons (electrons or muons) is presented. The data sample corresponds to an integrated luminosity of 137 fb$^{-1}$ of proton-proton collisions at…

High Energy Physics - Experiment · Physics 2020-03-16 CMS Collaboration

We present several strategies for searching for supersymmetry in dijet channels that do not explicitly invoke missing energy. Preliminary investigations suggest that signal-to-background ratios of at least 4--5 should be achievable at the…

High Energy Physics - Phenomenology · Physics 2008-12-18 Lisa Randall , David Tucker-Smith

Meson production cross sections in ultra-peripheral relativistic heavy ion collisions at LHC are revisited. The relevance of meson models and of exotic QCD states is discussed. This study includes states that have not been considered before…

Nuclear Theory · Physics 2009-12-31 C. A. Bertulani

Results of searches for SUSY production at CMS in events with third-generation signatures are presented. Along with missing energy, the final states may include hadronic jets with or without b-quark tag, light leptons, and tau leptons.…

High Energy Physics - Phenomenology · Physics 2019-08-13 Altan Cakir

We present a search for chargino-neutralino associated production using like electric charge dilepton events collected by the CDF II detector at the Fermilab Tevatron in proton-antiproton collisions at $\sqrt{s} = 1.96$ TeV. One lepton is…

High Energy Physics - Experiment · Physics 2013-05-20 CDF Collaboration , T. Aaltonen , others

The results of searches for Supersymmetry in events with two same-sign isolated leptons, hadronic jets, and missing transverse energy in the final state are presented. The searches use pp collisions at 7 TeV collected in 2011 by the CMS…

High Energy Physics - Experiment · Physics 2011-10-13 M. Weinberg

We examine the ATLAS and CMS 7 & 8 TeV multijet supersymmetry (SUSY) searches requiring the incidence of a single lepton in the framework of the supersymmetric grand unified model No-Scale Flipped SU(5) with extra vector-like flippon…

High Energy Physics - Phenomenology · Physics 2013-09-18 Tianjun Li , James A. Maxin , Dimitri V. Nanopoulos , Joel W. Walker

The results of a search for supersymmetry in final states containing at least one isolated lepton (electron or muon), jets and large missing transverse momentum with the ATLAS detector at the Large Hadron Collider (LHC) are reported. The…

High Energy Physics - Experiment · Physics 2015-05-05 ATLAS Collaboration
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