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The end point energies of nuclear $\beta$ decays have been measured with a segmented planar Ge LEPS detector using both singles and coincidence techniques. The $\beta - \gamma$ coincidence has been performed with a segmented planar Ge LEPS…

A search is conducted for the electroweak pair production of a chargino and a neutralino $pp \rightarrow \tilde\chi^\pm_1 \tilde\chi^0_2$, where the chargino decays into the lightest neutralino and a $W$ boson, $\tilde\chi^\pm_1 \rightarrow…

高能物理 - 实验 · 物理学 2019-09-10 ATLAS Collaboration

A search for the electroweak production of charginos, neutralinos and sleptons decaying into final states involving two or three electrons or muons is presented. The analysis is based on 36.1 fb$^{-1}$ of $\sqrt{s}=13$ TeV proton-proton…

高能物理 - 实验 · 物理学 2019-01-11 ATLAS Collaboration

We examine neutrino oscillations in a two Higgs doublet model (2HDM) in which the second doublet couples only to the third generation right-handed up-fermions, i.e., to t_R and to N_3 which is the heaviest right-handed Majorana neutrino.…

高能物理 - 唯象学 · 物理学 2009-11-11 David Atwood , Shaouly Bar-Shalom , Amarjit Soni

Results are presented from a search for supersymmetry in events with a single electron or muon and hadronic jets. The data correspond to a sample of proton-proton collisions at $\sqrt{s} = $ 13 TeV with an integrated luminosity of 35.9…

高能物理 - 实验 · 物理学 2018-03-23 CMS Collaboration

Results of a search for new particles decaying into eight or more jets and moderate missing transverse momentum are presented. The analysis uses 139 fb$^{-1}$ of proton$-$proton collision data at $\sqrt{s} = 13$ TeV collected by the ATLAS…

高能物理 - 实验 · 物理学 2020-11-24 ATLAS Collaboration

We consider a model of neutrino mass based on R-parity violating (RPV) supersymmetry, with three $\mu_i$, relevant for bilinear RPV terms, and three $\lambda'_{ijk}$, relevant for the trilinear terms. The present neutrino data, after a…

高能物理 - 唯象学 · 物理学 2014-08-13 Roshni Bose , Amitava Datta , Anirban Kundu , Sujoy Poddar

We present the results of searches for Supersymmetry in various topologies that lead to final states with jets and missing transverse momentum together with one or more isolated leptons, one or two photons or a photon and a lepton. The…

高能物理 - 实验 · 物理学 2019-08-13 Sanjay Padhi

Results are reported from a search for supersymmetric particles in proton-proton collisions in the final state with a single lepton; multiple jets, including at least one b-tagged jet; and large missing transverse momentum. The search uses…

高能物理 - 实验 · 物理学 2017-10-23 CMS Collaboration

Results are presented from searches for R-parity-violating supersymmetry in events produced in pp collisions at sqrt(s) = 8 TeV at the LHC. Final states with 0, 1, 2, or multiple leptons are considered independently. The analysis is…

高能物理 - 实验 · 物理学 2017-01-04 CMS Collaboration

We explore a realistic supersymmetric SU(2)_L \times SU(2)_R \times U(1)_B-L model spontaneously broken at around 10^12 GeV. The presence of D and F-flat directions gives rise to TeV mass doubly charged particles which can be found at the…

高能物理 - 唯象学 · 物理学 2011-05-12 Shahida Dar , Qaisar Shafi , Arunansu Sil

We explore the prospects for detection of sparticles and Higgs bosons at the Tevatron, LEP-200 and the LHC in the allowed parameter space of a `yukawa unified' ($\lambda_b(M_U)=\lambda_{\tau}(M_U)$) minimal supergravity (YUMS) model, where…

高能物理 - 唯象学 · 物理学 2009-10-28 J. F. Gunion , H. Pois

Recently, the LEP collaborations have reported a lower bound on a Standard Model-like Higgs boson of order 89 GeV. We discuss the implications of this bound for the minimal supersymmetric extension of the Standard Model (MSSM). In…

高能物理 - 唯象学 · 物理学 2008-11-26 M. Carena , P. H. Chankowski , S. Pokorski , C. E. M. Wagner

The radiative B ->\tau^+ \tau^- \gamma decay is investigated in the framework of the two Higgs doublet model . The dependence of the differential branching ratio on the photon energy and the branching ratio on the two Higgs doublet model…

高能物理 - 唯象学 · 物理学 2011-03-23 E. O. Iltan , G. Turan

A search for supersymmetric partners of quarks is performed in the topology of multijet events accompanied by at least one tau lepton decaying hadronically and large missing transverse energy. Approximately 1 fb-1 of ppbar collision data…

高能物理 - 实验 · 物理学 2010-04-08 The D0 Collaboration , V. Abazov

Although many observations in high multiplicity p+Pb collisions at the LHC indicate striking similarity to heavy ion collisions, no evidence of jet-medium interactions has been observed till date. We study the effect of jet-medium…

高能物理 - 唯象学 · 物理学 2018-09-18 Debojit Sarkar

The most recent results on searches in lepton plus jet final states motivated by different models beyond the standard model are presented, using pp collision data collected by the ATLAS and CMS detectors during Run I and Run II at the CERN…

高能物理 - 实验 · 物理学 2017-09-06 Francesco Romeo

From the tau-lepton analysis of the charged Higgs decay of the top quark at the Tevatron, t -> H+ b -> tau+ nu_{tau} b, it is possible to set rather stringent bounds on the (tan(beta),M_{H+})-plane, if one assumes that H+ is a charged…

高能物理 - 唯象学 · 物理学 2009-10-30 Jaume Guasch , Joan Sola

Low energy observables involving the Standard Model fermions which are chirality-violating, such as anomalous electromagnetic moments, necessarily involve an insertion of the Higgs in order to maintain $SU(2) \times U(1)$ gauge invariance.…

高能物理 - 唯象学 · 物理学 2017-02-01 Iftah Galon , Arvind Rajaraman , Tim M. P. Tait

We study the impact of the multi-lepton searches at the LHC on supersymmetric models with compressed mass spectra. For such models the acceptances of the usual search strategies are significantly reduced due to requirement of large…

高能物理 - 唯象学 · 物理学 2015-06-05 Krzysztof Rolbiecki , Kazuki Sakurai