High Energy Accelerator Research Organization

output

19912026

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2014 · hep-phShow all

49 papers · 2 filters

hep-ph2014★ 78 cited

Probing New Physics with $q^{2}$ distributions in $B ˉ \to D^{(*)} τ ν ˉ$

Yasuhito Sakaki, Minoru Tanaka, Andrey Tayduganov +1

Recent experimental results for the ratios of the branching fractions of the decays $B ˉ \to D^{(*)} τ ν ˉ$ and $B ˉ \to D^{(*)} μ ν ˉ$ came as a surprise and lead to a d…

hep-ph2014★ 8 cited

The LBNO long-baseline oscillation sensitivities with two conventional neutrino beams at different baselines

LBNO Collaboration, S. K. Agarwalla, L. Agostino +157

The proposed Long Baseline Neutrino Observatory (LBNO) initially consists of $\sim 20$ kton liquid double phase TPC complemented by a magnetised iron calorimeter, to be installed a…

hep-ph2014★ 20 cited

Optimised sensitivity to leptonic CP violation from spectral information: the LBNO case at 2300 km baseline

LBNO Collaboration, S. K. Agarwalla, L. Agostino +157

One of the main goals of the Long Baseline Neutrino Observatory (LBNO) is to study the $L / E$ behaviour (spectral information) of the electron neutrino and antineutrino appearance p…

hep-ph2014★ 20 cited

Quark mixing from Delta(6N^2) family symmetry

Hajime Ishimori, Stephen F. King, Hiroshi Okada +1

We consider a direct approach to quark mixing based on the discrete family symmetry Delta (6N^2) in which the Cabibbo angle is determined by a residual Z_2 times Z_2 subgroup to be…

hep-ph2014

Internal structure of exotic hadrons by high-energy exclusive reactions

H. Kawamura, S. Kumano, T. Sekihara

We propose to use high-energy exclusive reactions for probing internal structure of exotic hadron candidates. First, the constituent counting rule of perturbative QCD can be used f…

hep-ph2014★ 2 cited

Determining Compositeness of Hadronic Resonances: the $Λ (1405)$ Radiative Decay and the $a_{0} (980)$ - $f_{0} (980)$ Mixing

T. Sekihara, S. Kumano

Recently the concept of compositeness has been developed so as to distinguish whether interested hadrons are hadronic molecules or not. Here, in terms of compositeness, we investig…

hep-ph2014★ 79 cited

Charmonium Spectroscopy in Strong Magnetic Fields by QCD Sum Rules: S-Wave Ground States

Sungtae Cho, Koichi Hattori, Su Houng Lee +2

We investigate quarkonium mass spectra in external constant magnetic fields by using QCD sum rules. We first discuss a general framework of QCD sum rules necessary for properly ext…

hep-ph2014★ 57 cited

Discrimination of dark matter models in future experiments

Tomohiro Abe, Ryuichiro Kitano, Ryosuke Sato

Phenomenological aspects of simple dark matter models are studied. We discuss ways to discriminate the dark matter models in future experiments. We find that the measurements of th…

hep-ph2014★ 5 cited

Forward Hadron Productions in high energy pp collisions from a Monte-Carlo generator for Color Glass Condensate

Wei-Tian Deng, Hirotsugu Fujii, Kazunori Itakura +1

We develop a Monte-Carlo event generator based on combination of a parton production formula including the effects of parton saturation (called the DHJ formula) and hadronization p…

hep-ph2014★ 13 cited

Anomalous radiative transitions

Kenzo Ishikawa, Toshiki Tajima, Yutaka Tobita

Anomalous transitions involving photons derived by many-body interaction of the form, $\partial_{μ} G^{μ}$ , in the standard model are studied. This does not affect the equation of moti…

hep-ph2014★ 49 cited

Axion Landscape and Natural Inflation

Tetsutaro Higaki, Fuminobu Takahashi

Multiple axions form a landscape in the presence of various shift symmetry breaking terms. Eternal inflation populates the axion landscape, continuously creating new universes by b…

hep-ph2014★ 3 cited

ME-PS matching in the simulation of multi-jet production in hadron collisions using a subtraction method

Shigeru Odaka, Norihisa Watanabe, Yoshimasa Kurihara

The subtraction method for the matching between the matrix element (ME) and parton shower (PS), that has been developed for combining 0-jet and 1-jet production processes in associ…

hep-ph2014★ 42 cited

Constraint on K Kbar compositeness of the a0(980) and f0(980) resonances from their mixing intensity

T. Sekihara, S. Kumano

Structure of the $a_{0} (980)$ and $f_{0} (980)$ resonances is investigated with the $a_{0} (980)$ - $f_{0} (980)$ mixing intensity from the viewpoint of compositeness, which corresponds…

hep-ph2014★ 30 cited

Hidden axion dark matter decaying through mixing with QCD axion and the 3.5 keV X-ray line

Tetsutaro Higaki, Naoya Kitajima, Fuminobu Takahashi

Hidden axions may be coupled to the standard model particles through a kinetic or mass mixing with QCD axion. We study a scenario in which a hidden axion constitutes a part of or t…

hep-ph2014★ 14 cited

Laser pulse-shape dependence of Compton scattering

Alexander I. Titov, Burkhard Kampfer, Takuya Shibata +2

Compton scattering of short and ultra short (sub-cycle) laser pulses off mildly relativistic electrons is considered within a QED framework. The temporal shape of the pulse is esse…

hep-ph2014

Clustering structure of nuclei in deep inelastic processes

M. Hirai, S. Kumano, K. Saito +1

A clustering aspect is explained for the $^{9}$ Be nucleus in charged-lepton deep inelastic scattering. Nuclear modifications of the structure function $F_{2}$ are studied by the ratio…

hep-ph2014★ 127 cited

Superheavy dark matter and IceCube neutrino signals:bounds on decaying dark matter

Carsten Rott, Kazunori Kohri, Seong Chan Park

Superheavy dark matter may show its presence in high energy neutrino signals detected on earth. From the latest results of IceCube, we could set the strongest lower bound on the li…

hep-ph2014★ 3 cited

The Georgi Algorithms of Jet Clustering

Shao-Feng Ge

We reveal the direct link between the jet clustering algorithms recently proposed by Howard Georgi and parton shower kinematics, providing firm foundation from the theoretical side…

hep-ph2014★ 34 cited

Small Field Coleman-Weinberg Inflation driven by Fermion Condensate

Satoshi Iso, Kazunori Kohri, Kengo Shimada

We revisit the small field Coleman-Weinberg (CW) inflation, which has the following two problems. First, the smallness of the slow roll parameter $ε$ requires the inflation scale t…

hep-ph2014★ 10 cited

Tensor-polarized structure functions: Tensor structure of deuteron in 2020's

S. Kumano

We explain spin structure for a spin-one hadron, in which there are new structure functions, in addition to the ones ( $F_{1}$ , $F_{2}$ , $g_{1}$ , $g_{2}$ ) which exist for the spin-1/2 nucle…

hep-ph2014★ 10 cited

6D gauge-Higgs unification on T^2/Z_N with custodial symmetry

Yoshio Matsumoto, Yutaka Sakamura

We investigate the gauge-Higgs unification models compactified on T^2/Z_N that have the custodial symmetry. We select possible gauge groups, orbifolds and representations of the ma…

hep-ph2014★ 19 cited

Partially Composite Dark Matter

Masaki Asano, Ryuichiro Kitano

In a class of theories where the Higgs field emerges as a pseudo Nambu-Goldstone boson, it is often assumed that interactions to generate the top Yukawa coupling provide the Higgs…

hep-ph2014★ 7 cited

T-odd Asymmetry in W+jet Events at the LHC

Rikkert Frederix, Kaoru Hagiwara, Toshifumi Yamada +1

W bosons produced at high transverse momentum in hadron collisions can have polarization along the direction perpendicular to the production plane, which is odd under na $ı ¨$ ve-…

hep-ph2014★ 67 cited

QCD sum rules for magnetically induced mixing between $η_{c}$ and $J / ψ$