Bulletin of the American Physical Society
APS April Meeting 2015
Volume 60, Number 4
Saturday–Tuesday, April 11–14, 2015; Baltimore, Maryland
Session X16: Higgs Physics II 
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Sponsoring Units: DPF Chair: Chip Brock, Michigan State University Room: Key 12 
Tuesday, April 14, 2015 10:45AM  10:57AM 
X16.00001: Search for a heavy charged Higgs boson decaying to tb in the single lepton final state at CMS Alex Garabedian A possible extension to the Standard Model (SM) of particle physics would be to introduce a second Higgs Doublet. In such an extension, a total of five Higgs particles would exist: two of which are electrically charged. We present the search for charged Higgs bosons, being produced in association with a top quark and itself decaying into a topbottom quark pair. Furthermore, we focus on the semileptonic channel where one top quark decays hadronically and the other leptonically. Results will be shown using the full 8TeV dataset collected at the Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC). [Preview Abstract] 
Tuesday, April 14, 2015 10:57AM  11:09AM 
X16.00002: Search for anomalous HVV couplings in associated Higgs production with H to bb Sinan Sagir A search for anomalous Higgs couplings to vector bosons is presented in VH associated production channel with Higgs decaying to a pair of bottom quarks and vector boson decaying leptonically. The data corresponds to an integrated luminosity of 18.9 $fb^{1}$ at centerofmass energy of $\sqrt{z}$=8 TeV, collected with the Compact Muon Solenoid (CMS) detector at the Large Hadron Collider (LHC) from pp collisions. For a spinzero Higgs boson, we perform parameter scans of $f_{a3}^{ZZ}$, effective fraction of pseudoscalar cross section and combine our measurements in this channel with previous measurements in gluon fusion channel with Higgs decaying to a vector boson pair. We demonstrate that the VH channel is very powerful to put limits on very small anomalous Higgs couplings to vector bosons. This analysis is the first study of anomalous Higgs couplings at the LHC in VH associated Higgs production channel and the first study in Higgs fermionic decay channel. [Preview Abstract] 
Tuesday, April 14, 2015 11:09AM  11:21AM 
X16.00003: ABSTRACT WITHDRAWN 
Tuesday, April 14, 2015 11:21AM  11:33AM 
X16.00004: ABSTRACT WITHDRAWN 
Tuesday, April 14, 2015 11:33AM  11:45AM 
X16.00005: Search for MSSM Heavy Higgs Bosons with Decays to 125 GeV Higgs Bosons with $\tau$ Final States in CMS Laura Dodd A search for heavy higgs bosons decaying to higgs bosons is presented in the context of the Two Higgs Doublet Model, which can be extended to the Minimal Supersymmetric extension to the Standard Model. Heavy scalar higgs H and pseudoscalar A decays are examined with the final states $H\rightarrow hh \rightarrow \tau\tau b \bar{b}$ and $A\rightarrow Zh \rightarrow ll\tau\tau$, with $m_h=125$ GeV and $m_H=260350$ GeV and $m_A=220350$ GeV. Hadronic $\tau$ decays and leptonic $\tau$ decays are considered. Limits are computed from mass distributions produced with datadriven background methods and kinematic fitting. The search includes $19.7 \ fb^{1}$ of data taken with the CMS experiment at the LHC with center of mass energy $\sqrt{s}=8$ TeV. [Preview Abstract] 
(Author Not Attending)

X16.00006: Nonsterile electroweakscale righthanded neutrino and the dual nature of the 126 GeV scalar Ajinkya Kamat In the electroweak scale right handed neutrino (EW$\nu$R) model, a right handed neutrino can naturally acquire a mass around the electroweak scale. A minimal extension to this model can also accommodate a CPeven Higgs boson with a mass around 126 GeV, in addition to a rich spectrum of BSM scalars and mirror fermions. The 126 GeV Standard Modellike Higgs boson discovered and studied at CMS and ATLAS experiments, exhibits a duallike nature in the framework of this model. Also, the BSM scalars in this model can potentially be searched for at the Large Hadron Collider. [Preview Abstract] 
Tuesday, April 14, 2015 11:57AM  12:09PM 
X16.00007: Search for LeptonFlavorViolating Decays of the Higgs Boson Aaron Levine The first direct search for leptonflavorviolating decays of the recently discovered Higgs boson is described. The search is performed in the $H \rightarrow \mu\tau_{e}$ and $H \rightarrow \mu\tau_{h}$ channels where $\tau_{e}$ and $\tau_{h}$ are taus reconstructed in the electronic and hadronic decay channels, respectively. The data sample used in this search was collected in pp collisions at a centreofmass energy of $\sqrt{s} =$ 8 TeV with the CMS experiment at the CERN LHC and corresponds to an integrated luminosity of $19.7$ fb$^{1}$. The sensitivity of the search is an order of magnitude better than the existing indirect limits. A slight excess of signal events with a significance of 2.4 standard deviations is observed. The pvalue of this excess at $M_{H}$ = 125 GeV is 0.010. Interpreted as a limit this results in a constraint on the branching fraction, $B(H \rightarrow \mu\tau) < 1.51\%$ at 95$\%$ confidence level. The best fit branching fraction is $B(H \rightarrow \mu\tau) = (0.84^{+0.39}_{0.37})\%$. The limit is subsequently used to constrain the $Y_{\mu\tau}$ Yukawa coupling, $\sqrt{{Y_{\mu\tau}}^2 + {Y_{\tau\mu}}^2} < 3.6 \times 10^{3}$. [Preview Abstract] 
Tuesday, April 14, 2015 12:09PM  12:21PM 
X16.00008: Validation of the Higgs boson spinparity analysis with $Z \rightarrow 4l$ data Jeffrey Roskes A validation of the matrix element likelihood approach, used to study the spinparity and anomalous interactions of the Higgs boson, is presented. Data from $pp$ collisions, corresponding to an integrated luminosity of $5.1$ fb$^{1}$ at centerofmass energy of $\sqrt{s}=7$ TeV and $19.7$ fb$^{1}$ at $\sqrt{s}=8$ TeV, have been recorded with the CMS detector at the LHC. The analysis is applied to study the $Z$ boson, which already has established Standard Model properties, allowing for presence of an alternative Higgs boson with the same mass and width as the $Z$ boson, in the decay channel $Z$ or $H(91.2)\rightarrow 4l$. The nonresonant $q\bar{q} \rightarrow 4l$ contribution is parameterized, including interference with $q\bar{q} \rightarrow Z \rightarrow 4l$, and its effective fractional cross section is fitted in the data. The alternative Higgslike hypothesis $H(91.2)$ is excluded at higher than $99.99\%$ confidence level. [Preview Abstract] 
Tuesday, April 14, 2015 12:21PM  12:33PM 
X16.00009: ABSTRACT WITHDRAWN 
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