Showing 2013 · hep-phShow all

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hep-ph2013

The Status of Neutralino Dark Matter

Bibhushan Shakya

The lightest neutralino in supersymmetry is the most studied dark matter candidate. This writeup reviews the status of neutralino dark matter in minimal and nonminimal supersymmetr…

hep-ph2013★ 27 cited

NNLL Momentum-Space Resummation for Stop-Pair Production at the LHC

Alessandro Broggio, Andrea Ferroglia, Matthias Neubert +2

If supersymmetry near the TeV scale is realized in Nature, the pair production of scalar top squarks is expected to be observable at the Large Hadron Collider. Recently, effective…

hep-ph2013★ 17 cited

Higgs Decay into Two Photons at the Boundary of a Warped Extra Dimension

Juliane Hahn, Clara Hörner, Raoul Malm +3

A detailed five-dimensional calculation of the Higgs-boson decay into two photons is performed in both the minimal and the custodially protected Randall-Sundrum (RS) model, where t…

hep-ph2013★ 20 cited

Subtleties in the BaBar measurement of time-reversal violation

Elaad Applebaum, Aielet Efrati, Yuval Grossman +2

A first measurement of time-reversal (T) asymmetries that are not also CP asymmetries has been recently achieved by the BaBar collaboration. We analyze the measured asymmetries in…

hep-ph2013★ 51 cited

Probing CP Violation in with Converted Photons

Fady Bishara, Yuval Grossman, Roni Harnik +3

We study Higgs diphoton decays, in which both photons undergo nuclear conversion to electron- positron pairs. The kinematic distribution of the two electron-positron pairs may be u…

hep-ph2013★ 11 cited

A higgs-like dilaton: viability and implications

Javi Serra

We re-examine the feasibility of the higgs-like particle discovered at the LHC being a dilaton: the Goldstone boson of spontaneous breaking of scale invariance. We review the expec…

hep-ph2013★ 39 cited

Higgs Couplings and Naturalness in -SUSY

Marco Farina, Maxim Perelstein, Bibhushan Shakya

We study Higgs boson couplings in the large- version of the Next-to-Minimal Supersymmetric Standard Model, known as -SUSY. We find that the predicted deviations from the Stan…

hep-ph2013

Angular Distributions as Lifetime Probes

Jeff Asaf Dror, Yuval Grossman

If new TeV scale particles are discovered, it will be important to determine their width. There is, however, a problematic region, where the width is too small to be determined dir…

hep-ph2013★ 10 cited

Effects of K-\bar K mixing on determining gamma from B^\pm -> DK^\pm

Yuval Grossman, Michael Savastio

The decay followed by the subsequent decay of the meson into final states involving a neutral kaon can be used to determine the CKM angle . We study CP…

hep-ph2013

Fermions in Randall-Sundrum Models with Two Additional Unwarped Extra Dimensions

Erin De Pree, Jeremy Perrin

Models with one warped and two unwarped extra dimensions allow for the solution of a number of open questions in particle physics. They can be used to solve the hierarchy problem i…

hep-ph2013★ 7 cited

RPV SUSY with Same-Sign Dileptons at LHC-14

Michael Saelim, Maxim Perelstein

We estimate the sensitivity of the 14 TeV LHC run to an R-parity violating supersymmetric model, via the same-sign dilepton (SSDL) signature. We consider the simplified model with…

hep-ph2013★ 59 cited

The Problem of Dirac Gauginos and its Solutions

Csaba Csaki, Jessica Goodman, Riccardo Pavesi +1

We examine the effective low-energy theory of the adjoint sector of Dirac gaugino models and its UV completions, and identify the main source of tuning. A holomorphic scalar adjoin…

hep-ph2013★ 63 cited

Dynamical R-Parity Violation

Csaba Csaki, Eric Kuflik, Tomer Volansky

We present a new paradigm for supersymmetric theories with R-parity violation (RPV). At high scale, R-parity is conserved in the visible sector but spontaneously broken in the SUSY…

hep-ph2013★ 25 cited

More Flavor SU(3) Tests for New Physics in CP Violating B Decays

Yuval Grossman, Zoltan Ligeti, Dean J. Robinson

The recent LHCb measurements of the and rates and CP asymmetries are in agreement with U-spin expectations from and $B_d \to π^+π…

hep-ph2013★ 19 cited

Physics Case for the ILC Project: Perspective from Beyond the Standard Model

Howard Baer, Mikael Berggren, Jenny List +5

The International Linear Collider (ILC) has recently proven its technical maturity with the publication of a Technical Design Report, and there is a strong interest in Japan to hos…

hep-ph2013★ 60 cited

The Effective Theory of Self-Interacting Dark Matter

Brando Bellazzini, Mathieu Cliche, Philip Tanedo

We present an effective non-relativistic theory of self-interacting dark matter. We classify the long range interactions and discuss how they can be generated from quantum field th…

hep-ph2013★ 6 cited

The International Linear Collider Technical Design Report - Volume 2: Physics

Howard Baer, Tim Barklow, Keisuke Fujii +15

The International Linear Collider Technical Design Report (TDR) describes in four volumes the physics case and the design of a 500 GeV centre-of-mass energy linear electron-positro…

hep-ph2013★ 109 cited

Standard Model predictions for B -> Kll with form factors from lattice QCD

Chris Bouchard, G. Peter Lepage, Christopher Monahan +2

We calculate, for the first time using unquenched lattice QCD form factors, the Standard Model differential branching fractions for and compare wit…

hep-ph2013★ 24 cited

Higgs Couplings and Naturalness

Marco Farina, Maxim Perelstein, Nicolas Rey-Le Lorier

Many extensions of the Standard Model postulate the existence of new weakly coupled particles, the top partners, at or below the TeV scale. The role of the top partners is to cance…

hep-ph2013★ 24 cited

The Same-Sign Dilepton Signature of RPV/MFV SUSY

Joshua Berger, Maxim Perelstein, Michael Saelim +1

The lack of observation of superpartners at the Large Hadron Collider so far has led to a renewed interest in supersymmetric models with R-parity violation (RPV). In particular, im…

hep-ph2013★ 128 cited

A modified naturalness principle and its experimental tests

Marco Farina, Duccio Pappadopulo, Alessandro Strumia

Motivated by LHC results, we modify the usual criterion for naturalness by ignoring the uncomputable power divergences. The Standard Model satisfies the modified criterion ('finite…

hep-ph2013★ 28 cited

A Complete Model for R-parity Violation

Csaba Csáki, Ben Heidenreich

We present a complete model whose low energy effective theory is the R-parity violating NMSSM with a baryon number violating udd vertex of the MFV SUSY form, leading to prompt LSP…

hep-ph2013★ 17 cited

How to test for mass degenerate Higgs resonances

Yuval Grossman, Ze'ev Surujon, Jure Zupan

The Higgs-like signal observed at the LHC could be due to several mass degenerate resonances. We show that the number of resonances is related to the rank of a "production and deca…