V. Barger

Four-Way Neutrino Oscillations

V. Barger, T. J. Weiler, K. Whisnant

We present a four-neutrino model with three active neutrinos and one sterile neutrino which naturally has maximal $I^½_{I^} ¼ \to I^½_{I ¨} $ oscillations of atmospheric neutrinos and can expl…

Higgs Bosons: Intermediate Mass Range at e+e- Colliders

V. Barger, K. Cheung, A. Djouadi +2

We elaborate on the production of the Standard Model Higgs particle at high-energy $e^{+} e^{-}$ colliders through the reaction $e^{+} e^{-} \to Z H$ . Particular emphasis is put on th…

hep-ph2003

Effective number of neutrinos and baryon asymmetry from BBN and WMAP

V. Barger, James P. Kneller, Hye-Sung Lee +2

We place constraints on the number of relativistic degrees of freedom and on the baryon asymmetry at the epoch of Big Bang Nucleosynthesis (BBN) and at recombination, using cosmic…

Report of the Subgroup on the Top Quark

C. -P. Yuan, L. Nodulman, H. Baer +12

The top group studied discovery issues as well as measurements to be made at the Tevatron, the LHC and the SSC.

Neutrino Mixing Schemes

V. Barger, K. Whisnant

A revolution in our understanding of the neutrino sector is underway, driven by observations that are interpreted in terms of changes in neutrino flavors as they propagate. Since n…

Fate of the Sterile Neutrino

V. Barger, B. Kayser, J. Learned +2

In light of recent Super-Kamiokande data and global fits that seem to exclude both pure Î½_Î¼\to Î½_s oscillations of atmospheric neutrinos and pure Î½_e \to Î½_s oscillations of s…

Production of Weak Bosons and Higgs Bosons at e-e- Colliders

V. Barger, J. F. Beacom, Kingman Cheung +1

We present calculations of cross sections for single $W^{-}$ and $Z$ production and $W^{-} W^{-}, W^{-} Z, W^{-} I^^{3}, Z Z$ , and $W^{+} W^{-}$ pair production within the Standard Model at $e^{-} e^{-}$ line…

astro-ph1998

Neutrino Decay as an Explanation of Atmospheric Neutrino Observations

V. Barger, J. G. Learned, S. Pakvasa +1

We show that the observed zenith angle dependence of the atmospheric neutrinos can be accounted for by neutrino decay. Furthermore, it is possible to account for all neutrino anoma…

CPT-odd Resonances in Neutrino Oscillations

V. Barger, S. Pakvasa, T. J. Weiler +1

We consider the consequences for future neutrino factory experiments of small CPT-odd interactions in neutrino oscillations. The Î½_Î¼\toÎ½_Î¼and \barÎ½_Î¼\to\barÎ½_Î¼survival prob…

Seasonal and Energy Dependence of Solar Neutrino Vacuum Oscillations

V. Barger, K. Whisnant

We make a global vacuum neutrino oscillation analysis of solar neutrino data, including the seasonal and energy dependence of the recent Super-Kamiokande 708-day results. The best…

Trilepton Signal of Minimal Supergravity at the Tevatron Including $I ¨ $ -lepton Contributions

V. Barger, Chung Kao, Tianjun Li

The trilepton signal with missing transverse energy ($3\ell+\notE_T$, with $ℓ = e$ or $I^¼$ ) from chargino-neutralino ( $I ¨ _{1}^{\pm} I ¨ _{2}^{0}$ ) associated production and decays is stud…

Single-Lepton Top Signals with a b-Tag at the Tevatron

V. Barger, E. Mirkes, J. Ohnemus +1

Events with a leptonic W-decay plus jets should contain top-quark signals, but a QCD W+jets background must be separated. We compare transverse W-momentum, jet multiplicity, and b-…

Higgs Boson Decays to tau-pairs in the s-channel at a Muon Collider

V. Barger, T. Han, C. -G. Zhou

We study the observability of the $\tautau$ decay mode of a Higgs boson produced in the $s$ -channel at a muon collider. We find that the spin correlations of the $\tautau$ in $Ï\t…

Physics at Muon Colliders

V. Barger

The potential of muon colliders to address fundamental physics issues is explored, with emphasis on understanding the nature of electroweak symmetry breaking. The $s$ -channel produ…

What $e^{+} e^{-}$ collider could make a ``no-lose'' search for MSSM Higgs bosons?

V. Barger, Kingman Cheung, R. J. N. Phillips +1

The lightest CP-even Higgs boson $h$ in the minimum supersymmetric standard model (MSSM) has a mass upper bound depending on the top quark and squark masses. An $e^{+} e^{-}$ collider w…

hep-ph2004

Axion Models with High-Scale Supersymmetry Breaking

V. Barger, Cheng-Wei Chiang, Jing Jiang +1

Inspired by the possibility of high-scale supersymmetry breaking in the string landscape where the cosmological constant problem and the gauge hierarchy problem can be solved while…

Atomic Parity Violation, Leptoquarks, and Contact Interactions

V. Barger, Kingman Cheung

The recent measurement of atomic parity violation in cesium atoms shows a $2.3 I ¨ $ deviation from the standard model prediction. We show that such an effect can be explained by four…

hep-ph2011

Dark matter at DeepCore and IceCube

V. Barger, Y. Gao, D. Marfatia

With the augmentation of IceCube by DeepCore, the prospect for detecting dark matter annihilation in the Sun is much improved. To complement this experimental development, we provi…

Upgraded experiments with super neutrino beams: Reach versus Exposure

V. Barger, Patrick Huber, Danny Marfatia +1

We introduce exposure as a means to making balanced comparisons of the sensitivities of long-baseline neutrino experiments to a nonzero Î¸_{13}, to CP violation and to the neutrino…

Collider discovery limits for supersymmetric Higgs bosons

V. Barger, Kingman Cheung, R. J. N. Phillips +1

The prospects for discovery of the five Higgs bosons of the minimal supersymmetric standard model are assessed for existing and planned future colliders, including LEP\,I, LEP\,II,…

Closing in on Supersymmetry

V. Barger, R. J. N. Phillips

A survey is made of some recent ideas and progress in the phenomenological applications of Supersymmetry (SUSY). We describe the success of SUSY-GUT models, the expected experiment…

Supersymmetric Grand Unified Theories: Two Loop Evolution of Gauge and Yukawa Couplings

V. Barger, M. S. Berger, P. Ohmann

We make a numerical study of gauge and Yukawa unification in supersymmetric grand unified models and examine the quantitative implications of fermion mass ansÃ¤tze at the grand uni…

hep-ph2008

Phase transition in the fine structure constant

L. Anchordoqui, V. Barger, H. Goldberg +1

Within the context of mass-varying neutrinos, we construct a cosmological model that has a phase transition in the electromagnetic fine structure constant Î±at a redshift of 0.5. T…

Overview of Neutrino Oscillation Physics

V. Barger

Recent evidence for neutrino oscillations has revolutionized the study of neutrino masses and mixing. This report gives an overview of what we are learning from the neutrino oscill…

Short-Baseline Neutrino Oscillations at a Neutrino Factory

V. Barger, S. Geer, R. Raja +1

Within the framework of three-neutrino and four-neutrino scenarios that can describe the results of the LSND experiment, we consider the capabilities of short baseline neutrino osc…

Physics of Higgs Factories

V. Barger, M. Berger, J. F. Gunion +1

We outline the unique role of a muon collider as a Higgs factory for Higgs boson resonance production in the $s$ -channel. Physics examples include: the precision measurements of th…

Challenging Lorentz noninvariant neutrino oscillations without neutrino masses

V. Barger, D. Marfatia, K. Whisnant

We show that the combined data from solar, long-baseline and reactor neutrino experiments can exclude the generalized bicycle model of Lorentz noninvariant direction-dependent and/…

Neutrino Decay and Atmospheric Neutrinos

V. Barger, J. G. Learned, P. Lipari +3

We reconsider neutrino decay as an explanation for atmospheric neutrino observations. We show that if the mass-difference relevant to the two mixed states Î½_Î¼and Î½_Ïis very sma…

A Separate Higgs?

V. Barger, N. G. Deshpande, J. L. Hewett +1

We investigate the possibility of a multi-Higgs doublet model where the lightest neutral Higgs boson ( $h^{0}$ ) decouples from the fermion sector. We are partially motivated by the fo…

astro-ph2007

Accelerating cosmologies tested by distance measures

V. Barger, Y. Gao, D. Marfatia

We test if the latest Gold set of 182 SNIa or the combined "Platinum" set of 192 SNIa from the ESSENCE and Gold sets, in conjunction with the CMB shift parameter show a preference…

How two neutrino superbeam experiments do better than one

V. Barger, D. Marfatia, K. Whisnant

We examine the use of two superbeam neutrino oscillation experiments with baselines $\lsim 1000$ km to resolve parameter degeneracies inherent in the three-neutrino analysis of suc…

hep-ph2003

LSND anomaly from CPT violation in four-neutrino models

V. Barger, D. Marfatia, K. Whisnant

The LSND signal for \barÎ½_Î¼to \barÎ½_e oscillations has prompted supposition that there may be a fourth light neutrino or that CPT is violated. Neither explanation provides a goo…

hep-ph2003

Progress in the physics of massive neutrinos

V. Barger, D. Marfatia, K. Whisnant

The current status of the physics of massive neutrinos is reviewed with a forward-looking emphasis. The article begins with the general phenomenology of neutrino oscillations in va…

Precision physics with a wide band super neutrino beam

V. Barger, M. Dierckxsens, M. Diwan +4

We carry out a state-of-the-art assessment of long baseline neutrino oscillation experiments with wide band beams. We describe the feasibility of an experimental program using exis…

Relic Density of Neutralino Dark Matter in Supergravity Models

V. Barger, Chung Kao

We calculate the relic density ( $I^c ◯_{I ¨ _{1}^{0}} h^{2}$ ) of neutralino dark matter in supergravity models with radiative electroweak symmetry breaking, for values of the Higgs sector par…

Off--axis Beams and Detector Clusters: Resolving Neutrino Parameter Degeneracies

V. Barger, D. Marfatia, K. Whisnant

There are three parameter degeneracies inherent in the three--neutrino analysis of long--baseline neutrino experiments. We develop a systematic method for determining whether or no…

Report of the SUGRA Working Group for Run II of the Tevatron

V. Barger, C. E. M. Wagner

We present an analysis of the discovery reach for supersymmetric particles at the upgraded Tevatron collider, assuming that SUSY breaking results in universal soft breaking paramet…

hep-ph2014

End of the cosmic neutrino energy spectrum

L. A. Anchordoqui, V. Barger, H. Goldberg +5

There may be a high-energy cutoff of neutrino events in IceCube data. In particular, IceCube does not observe either continuum events above 2 PeV, or the Standard Model Glashow-res…

Supersymmetry vis-a-vis Muon Colliders

V. Barger

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. F…

Remarks on the KARMEN Anomaly

V. Barger, R. J. N. Phillips, S. Sarkar

A recently reported anomaly in the time structure of signals in the KARMEN neutrino detector suggests the decay of a new particle $x$ , produced in $I ¨ ^{+} \to I^¼^{+} x$ with mass $m_x=…

Event shape criteria for single-lepton top signals

V. Barger, J. Ohnemus, R. J. N. Phillips

Single-lepton plus jets signals from $t t ˉ$ production at hadron colliders generally give more spherically symmetrical events than the principal backgrounds from $W$ production.…

Oscillation Measurements with Upgraded Conventional Neutrino Beams

V. Barger

We consider the nu_mu to nu_e oscillation measurements that would be possible at upgraded 1 GeV and multi-GeV conventional neutrino sources driven by future megawatt-scale proton d…

Supersymmetry Phenomenology at Hadron Colliders

V. Barger

The phenomenology of a low-energy supersymmetry at hadron colliders is discussed with consideration of the minimal supergravity model, with a large top quark Yukawa coupling at the…

hep-ex2014

Higgs Working Group Report of the Snowmass 2013 Community Planning Study

S. Dawson, A. Gritsan, H. Logan +131

This report summarizes the work of the Energy Frontier Higgs Boson working group of the 2013 Community Summer Study (Snowmass). We identify the key elements of a precision Higgs ph…

Phenomenological Implications of the $m_{t}$ RGE Fixed Point for SUSY Higgs Boson Searches

V. Barger, M. S. Berger, P. Ohmann +1

In minimal SUSY-GUT models with $M_{SUSY}\ltap 1$ TeV, the renormalization group equations have a solution dominated by the infrared fixed point of the top Yukawa coupling. This fi…

Phenomenological Implications of the m_t RGE Fixed Point for SUSY Higgs Boson Searches

V. Barger, M. S. Berger, P. Ohmann +1

In minimal SUSY-GUT models with $M_{SUSY}\alt 1$ TeV, the renormalization group equations have a solution dominated by the infrared fixed point of the top Yukawa coupling. This fix…

Supernova 1987A did not test the neutrino mass hierarchy

V. Barger, D. Marfatia, B. P. Wood

We dispel the misconception that data from SN 1987A favor the normal neutrino mass hierarchy over the inverted hierarchy for $\sin^2 Î¸_{13} \gsim 10^{-4}$. We find comparable fits…

Inferred 4.4 eV Upper Limits on the Muon- and Tau-Neutrino Masses

V. Barger, T. J. Weiler, K. Whisnant

By combining experimental constraints from atmospheric and solar neutrino oscillations and the tritium beta decay endpoint, we infer upper limits of 4.4 eV on the $I^½_{I^} ¼$ and $Î½_Ï…

Neutrino Superbeam Scenarios at the Peak

V. Barger, D. Marfatia, K. Whisnant

We discuss options for U.S. long baseline neutrino experiments using upgraded conventional neutrino beams, assuming $L / E_{I^} ½$ is chosen to be near the peak of the leading oscillatio…

LHC Analysis of the Strongly Interacting $W W$ System: Gold-Plated Modes

J. Bagger, V. Barger, K. Cheung +5

We study the gold-plated purely leptonic signal and background rates at the LHC for the $Z Z,$ $W^{+} W^{-},$ $W^{\pm} Z$ and $W^{\pm} W^{\pm}$ final states associated with strongly interact…

Determination of the pattern of neutrino masses at a Neutrino Factory

V. Barger, S. Geer, R. Raja +1

We study the precision to which the sign of Î´m_{32}^2 can be determined at a neutrino factory, as a function of stored energies and baselines. This is done by simultaneously fitti…

Constraints on SUSY-GUT unification from $b \to s I^^{3}$ decay

V. Barger, M. S. Berger, P. Ohmann +1

The top-quark Yukawa infrared fixed-point solution of the renormalization group equations, with minimal supersymmetry and GUT unification, defines a low-energy spectrum of supersym…

hep-ph2005

Supersymmetry Parameter Analysis: SPA Convention and Project

J. A. Aguilar-Saavedra, A. Ali, B. C. Allanach +122

High-precision analyses of supersymmetry parameters aim at reconstructing the fundamental supersymmetric theory and its breaking mechanism. A well defined theoretical framework is…

Supergravity Solutions in the Low- $tan I^^{2}$ $I^»_{t}$ Fixed Point Region

V. Barger, M. S. Berger, P. Ohmann

There has been much discussion in the literature about applying the radiative electroweak symmetry breaking (EWSB) requirement to GUT models with supergravity. We motivate and disc…

Generalized Neutrino Mixing from the Atmospheric Anomaly

V. Barger, T. J. Weiler, K. Whisnant

We determine the neutrino mixing and mass parameters that are allowed by the Super-Kamiokande atmospheric neutrino data in a three-neutrino model with one mass-squared difference c…

Which long-baseline neutrino experiments are preferable?

V. Barger, P. Huber, D. Marfatia +1

We discuss the physics of superbeam upgrades, where we focus on T2KK, a NuMI beam line based experiment NOvA*, and a wide band beam (WBB) experiment independent of the NuMI beam li…

Detecting the Higgs Bosons of Minimal Supergravity with Muon Pairs

V. Barger, Chung Kao

The prospects at the CERN LHC are investigated for the discovery via decays into muon pairs of neutral Higgs bosons in the minimal supergravity model. Promising results are found f…

Classification of dark energy models in the (w_0,w_a) plane

V. Barger, E. Guarnaccia, D Marfatia

We classify dark energy models in a plane of observables that correspond to the common parameterization of a non-constant equation of state, w(a)=w_0 + w_a(1-a), where $a$ is the s…

Trilepton Signature of Minimal Supergravity at the Upgraded Tevatron

V. Barger, Chung Kao

The prospects for detecting trilepton events ( $ℓ = e$ or $I^¼$ ) from chargino-neutralino ( $I ¨ _{1}^{\pm} I ¨ _{2}^{0}$ ) associated production are investigated for the upgraded Fermilab Teva…

Astrophysical Constraints on Large Extra Dimensions

V. Barger, T. Han, C. Kao +1

In the Kaluza-Klein (KK) scenario with n large extra dimensions where gravity propagates in the 4+n dimensional bulk of spacetime while gauge and matter fields are confined to a fo…

Are $e I^¼$ colliders interesting?

V. Barger, S. Pakvasa, X. Tata

We show that current experimental constraints already severely restrict what might be observable at $e I^¼$ colliders. We identify some cases where it may be possible to probe physic…

Lepton Flavor Violating Era of Neutrino Physics

V. Barger

The physics agenda for future long-baseline neutrino oscillation experiments is outlined and the prospects for accomplishing those goals at future neutrino facilities are considere…

Exploring Neutrino Oscillations with Superbeams

V. Barger, S. Geer, R. Raja +1

We consider the medium- and long-baseline oscillation physics capabilities of intense muon-neutrino and muon-antineutrino beams produced using future upgraded megawatt-scale high-e…

hep-ph2009

Leptonic CP violation studies at MiniBooNE in the (3+2) sterile neutrino oscillation hypothesis

G. Karagiorgi, A. Aguilar-Arevalo, J. M. Conrad +4

We investigate the extent to which leptonic CP-violation in (3+2) sterile neutrino models leads to different oscillation probabilities for $I^ˉ ½_{I^} ¼ \to I^ˉ ½_{e}$ and $I^½_{I^} ¼ \to I^½_{e}$ …

Breaking Eight-fold Degeneracies in Neutrino CP Violation, Mixing, and Mass Hierarchy

V. Barger, D. Marfatia, K. Whisnant

We identify three independent two-fold parameter degeneracies (Î´, Î¸_{13}), sgn(Î´m^2_{31}) and (Î¸_{23}, Ï/2-Î¸_{23}) inherent in the usual three-neutrino analysis of long-basel…

Possible sneutrino-pair signatures with R-parity breaking

V. Barger, W. -Y. Keung, R. J. N. Phillips

If sneutrinos are the lightest supersymmetry partners and $R$ -parity is not conserved, the process $e^{+} e^{-} \to I^ˉ ½ ~ I^~ ½$ can have striking signatures due to the de…

Neutrino oscillation parameters from MINOS, ICARUS and OPERA combined

V. Barger, A. M. Gago, D. Marfatia +3

We perform a detailed analysis of the capabilities of the MINOS, ICARUS and OPERA experiments to measure neutrino oscillation parameters at the atmospheric scale with their data ta…

Neutrino Oscillations at an Entry-Level Neutrino Factory and Beyond

V. Barger, G. Geer, R. Raja +1

We consider the parameters of an entry-level neutrino factory designed to make the first observation of nu_e -> nu_mu oscillations, measure the corresponding amplitude sin^2 2theta…

hep-ph2005

Testing the LMA solution with solar neutrinos independently of solar models

V. Barger, D. Marfatia, K. Whisnant

We perform a comparative study of two methods of determining the survival probabilities of low, intermediate, and high energy solar neutrinos that emphasizes the general agreement…

Supersymmetry Phenomenology

V. Barger

The phenomenological implications of a low-energy supersymmetry are surveyed, with particular attention given to unification constraints and the role of a large top quark Yukawa co…

hep-ph2009

Generic dark matter signature for gamma-ray telescopes

V. Barger, Y. Gao, W. -Y. Keung +1

We describe a characteristic signature of dark matter (DM) annihilation or decay into gamma-rays. We show that if the total angular momentum of the initial DM particle(s) vanishes,…

Intermediate and Heavy Higgs Boson Physics at a 0.5 TeV e^+ e^- Collider

V. Barger, Kingman Cheung, B. A. Kniehl +1

We explore the potential of a future e^+ e^- collider in the 0.5 TeV center-of-mass energy range to detect intermediate or heavy Higgs bosons in the Standard Model. We first briefl…

String Scale Gauge Coupling Unification with Vector-like Exotics and Non-Canonical U(1)_Y Normalization

V. Barger, Jing Jiang, Paul Langacker +1

We use a new approach to study string scale gauge coupling unification systematically, allowing both the possibility of non-canonical U(1)_Y normalization and the existence of vect…

Collider Physics 1993

V. Barger, R. J. N. Phillips

These lectures survey the present situation and future prospects in selected areas of particle physics phenomenology: (1) the top quark, (2) the Higgs boson in the Standard Model,…

hep-ph2011

Is there evidence for sterile neutrinos in IceCube data?

V. Barger, Y. Gao, D. Marfatia

Data from the LSND and MiniBooNE experiments, and revised expectations of the antineutrino flux from nuclear reactors suggest the existence of eV-mass sterile neutrinos. 3+2 and 1+…

Physics Potential of a Tevatron Tripler

V. Barger, K. Cheung, T. Han +3

We explore the capabilities for new physics discovery in proton-antiproton collisions at 5.4 TeV center-of-mass energy with luminosity $1 0^{33} c m^{- 2} s^{- 1}$ at a Tripler upgrade…

Yukawa Coupling Evolution In SUSY GUTS

V. Barger, M. S. Berger, P. Ohmann

The scaling behavior and fixed points in the evolution of fermion Yukawa couplings and mixing angles are discussed. The relevance of fixed points in determining the top quark mass…

CP Studies and Non-Standard Higgs Physics

S. Kraml, E. Accomando, A. G. Akeroyd +163

There are many possibilities for new physics beyond the Standard Model that feature non-standard Higgs sectors. These may introduce new sources of CP violation, and there may be mi…

Neutrinoless double beta decay can constrain neutrino dark matter

V. Barger, S. L. Glashow, D. Marfatia +1

We examine how constraints can be placed on the neutrino component of dark matter by an accurate measurement of neutrinoless double beta ( $0 I^½ I^^{2} I^^{2}$ ) decay and the solar oscillation…

hep-ph2005

Non-Canonical Gauge Coupling Unification in High-Scale Supersymmetry Breaking

V. Barger, Jing Jiang, Paul Langacker +1

The string landscape suggests that the supersymmetry breaking scale can be high, and then the simplest low energy effective theory is the Standard Model (SM). Considering grand uni…

Double gluon fragmentation to $J / I ¨ $ pairs at the Tevatron

V. Barger, S. Fleming, R. J. N. Phillips

It has been proposed that the large cross sections for prompt $I ¨ $ , $I ¨ ^{'}$ , and $I ¨ _{c}$ production at the Fermilab Tevatron $p p ˉ$ collider can be explained by a dominant color-oc…

Z Plus Four Jets Production in Hadronic Collisions

V. Barger, E. Mirkes, R. J. N. Phillips +1

We present first results of $Z + 4$ jet cross sections at the Tevatron $p p ˉ$ collider with heavy quark flavor identification. The $Z + 4$ jet channel is of particular interest as…

Renormalization group evolution of R-parity-violating Yukawa couplings

V. Barger, M. S. Berger, R. J. N. Phillips +1

We study the evolution of $R$ -parity-violating (RPV) couplings in the minimum supersymmetric standard model, between the electroweak and grand unification scales, assuming a family…

Report of the US long baseline neutrino experiment study

V. Barger, M. Bishai, D. Bogert +46

This report provides the results of an extensive and important study of the potential for a U.S. scientific program that will extend our knowledge of neutrino oscillations well bey…

KamLAND and solar neutrino data eliminate the LOW solution

V. Barger, D. Marfatia

The KamLAND reactor antineutrino experiment has detected a 3.4Ïflux suppression relative to the expectation if no neutrino oscillations occur. We combine KamLAND data with solar n…

hep-ph1996

Higgs Boson Physics in the $s$ -channel at $I^¼^{+} I^¼^{-}$ Colliders

V. Barger, M. S. Berger, J. F. Gunion +1

Techniques and strategies for discovering and measuring the properties of Higgs bosons via $s$ -channel production at a $I^¼^{+} I^¼^{-}$ collider, and the associated requirements for the…

physics.acc-ph2004

The Neutrino Factory and Beta Beam Experiments and Development

C. Albright, V. Barger, J. Beacom +13

The long-term prospects for fully exploring three-flavor mixing in the neutrino sector depend upon an ongoing and increased investment in the appropriate accelerator R&D. Two new c…

Further ways to distinguish single-lepton top quark signals from background at the Tevatron

V. Barger, E. Mirkes, J. Ohnemus +1

Further kinematical variables are suggested, in which to compare the putative leptonic $W$ plus 4-jet top quark signal with the QCD background. We show that the lepton rapidity asy…

Cosmology and Hierarchy in Stabilized Warped Brane Models

V. Barger, T. Han, T. Li +2

We examine the cosmology and hierarchy of scales in models with branes immersed in a five-dimensional curved spacetime subject to radion stabilization. When the radion field is tim…

CP-Violating Phases in SUSY, Electric Dipole Moments, and Linear Colliders

V. Barger, T. Falk, T. Han +3

We reexamine large CP-violating phases in the general Minimal Supersymmetric Standard Model, as well as more restricted models. We perform a detailed scan over parameter space to f…

The Physics Capabilities of mu^+ mu^- Colliders

V. Barger, M. S. Berger, J. F. Gunion +1

We summarize the potential of muon colliders to probe fundamental physics. $W^{+} W^{-}$ , \bar tt, and $Z h$ threshold measurements could determine masses to precisions $I^ M_{W} = 6$ MeV,…

Neutrino Masses and Mixing at the Millennium

V. Barger

Recent evidence for neutrino oscillations has revolutionized the study of neutrino masses and mixing. This report gives an overview of what we are learning from the neutrino oscill…

hep-ph1996

Baryonic $Z^{'}$ connection of LEP $R_{b, c}$ data with Tevatron $(W, Z, I^^{3}) b b ˉ$ events

V. Barger, Kingman Cheung, Paul Langacker

The mixing of a new $Z^{'}$ boson with the $Z$ significantly improves the fit to the LEP precision electroweak data, provided that the $Z^{'}$ couples mainly to quarks. If $M_{Z_{2}} < 200$ ~…

hep-ph2019

Beyond the Standard Model Physics at the HL-LHC and HE-LHC

X. Cid Vidal, M. D'Onofrio, P. J. Fox +294

This is the third out of five chapters of the final report [1] of the Workshop on Physics at HL-LHC, and perspectives on HE-LHC [2]. It is devoted to the study of the potential, in…

hep-ph2009

Supersymmetry discovery potential of the LHC at $s =$ 10 and 14 TeV without and with missing $E_{T}$

H. Baer, V. Barger, A. Lessa +1

We examine the supersymmetry (SUSY) reach of the CERN LHC operating at $s = 10$ and 14 TeV within the framework of the minimal supergravity model. We improve upon previous rea…

astro-ph.HE2014

Glashow resonance as a window into cosmic neutrino sources

V. Barger, Lingjun Fu, J. G. Learned +3

The Glashow resonance at E_Î½=6.3 PeV is a measure of the \barÎ½_e content of the astrophysical neutrino flux. The fractional \barÎ½_e content depends on the neutrino production mo…

Relaxing Atomic Parity Violation Constraints on New Physics

V. Barger, K. Cheung, D. P. Roy +1

The weak charge $Q_{W}$ measured in atomic parity violation experiments can receive compensating contributions from more than one new physics source. We show explicitly that the $ÎQ…

Test of the Dimopouos-Hall-Raby Ansatz for Fermion Mass Matrices

V. Barger, M. S. Berger, T. Han +1

By evolution of fermion mass matrices of the Fritzsch and the Georgi-Jarlskog forms from the supersymmetric grand unified scale, DHR obtained predictions for the quark masses and m…

Confronting mass-varying neutrinos with MiniBooNE

V. Barger, D. Marfatia, K. Whisnant

We study the proposal that mass-varying neutrinos could provide an explanation for the LSND signal for \barÎ½_mu to \barÎ½_e oscillations. We first point out that all positive osci…