Publications (31)
Balmer breaks in simulated galaxies at z>6
C. Binggeli, E. Zackrisson, X. Ma +6
Photometric observations of the spectroscopically confirmed galaxy MACS1149-JD1 have indicated the presence of a prominent Balmer break in its spectral energy distri…
Polarization in SUSY Cascade Decays
S. Y. Choi, K. Hagiwara, Y. G. Kim +2
leptons emitted in cascade decays of supersymmetric particles are polarized. The polarization may be exploited to determine spin and mixing properties of the neutralinos and s…
The Absence of [CII] 158m Emission in Spectroscopically-Confirmed Galaxies at
N. Laporte, H. Katz, R. S. Ellis +8
The scatter in the relationship between the strength of [CII] 158m emission and the star formation rate at high-redshift has been the source of much recent interest. Although t…
Spin Analysis of Supersymmetric Particles
S. Y. Choi, K. Hagiwara, H. -U. Martyn +2
The spin of supersymmetric particles can be determined at colliders unambiguously. This is demonstrated for a characteristic set of non-colored supersymmetric particles --…
Les Houches 2015: Physics at TeV colliders - new physics working group report
G. Brooijmans, C. Delaunay, A. Delgado +78
We present the activities of the 'New Physics' working group for the 'Physics at TeV Colliders' workshop (Les Houches, France, 1-19 June, 2015). Our report includes new physics stu…
Handbook of LHC Higgs Cross Sections: 3. Higgs Properties
The LHC Higgs Cross Section Working Group, S. Heinemeyer, C. Mariotti +155
This Report summarizes the results of the activities in 2012 and the first half of 2013 of the LHC Higgs Cross Section Working Group. The main goal of the working group was to pres…
Tau Polarization in Tau-Neutrino Nucleon Scattering
K. Hagiwara, K. Mawatari, H. Yokoya
We investigate the spin polarization of Ï^{\pm} leptons produced in ν_Ï and \barν_Ï nucleon scattering via charged currents. Quasi-elastic scattering, Îresonance production a…
A Linear Collider Vision for the Future of Particle Physics
H. Abramowicz, E. Adli, F. Alharthi +446
In this paper we review the physics opportunities at linear colliders with a special focus on high centre-of-mass energies and beam polarisation, take a fresh look at the…
A puzzling non-detection of [O III] and [C II] from a galaxy observed with ALMA
C. Binggeli, A. K. Inoue, T. Hashimoto +12
Characterizing the galaxy population in the early Universe holds the key to understanding the evolution of these objects and the role they played in cosmic reionization. However, t…
SPT-CLJ2040-4451: An SZ-Selected Galaxy Cluster at z = 1.478 With Significant Ongoing Star Formation
M. B. Bayliss, M. L. N. Ashby, J. Ruel +76
SPT-CLJ2040-4451 -- spectroscopically confirmed at z = 1.478 -- is the highest redshift galaxy cluster yet discovered via the Sunyaev-Zel'dovich effect. SPT-CLJ2040-4451 was a cand…
Extremely UV-bright starbursts at the end of cosmic reionization
R. Marques-Chaves, D. Schaerer, M. Dessauges-Zavadsky +22
We present a study of 27 very UV-bright (-22.0<MUV<-24.4) sources at z~6 identified in SHELLQs survey. Stacking their rest-frame UV spectra reveals a prominent NV1240A P-Cygni, con…
RIOJA. Dusty outflows and density-complex ISM in the N-enhanced lensed galaxy RXCJ2248-ID at z=6.1
A. Crespo Gómez, Y. Tamura, L. Colina +19
We present an analysis on the kinematics and physical properties of the ionized gas in the lensed galaxy RXCJ2248-ID at z=6.1 based on high-resolution JWST NIRSpec/IFU data in comb…
HELAS and MadGraph with spin-3/2 particles
K. Hagiwara, K. Mawatari, Y. Takaesu
Fortran subroutines to calculate helicity amplitudes with massive spin-3/2 particles, such as massive gravitinos, which couple to the standard model and supersymmetric particles vi…
The Linear Collider Facility (LCF) at CERN
H. Abramowicz, E. Adli, F. Alharthi +406
In this paper we outline a proposal for a Linear Collider Facility as the next flagship project for CERN. It offers the opportunity for a timely, cost-effective and staged construc…
Associated production of light gravitinos in e^+e^- and e^-γcollisions
K. Mawatari, B. Oexl, Y. Takaesu
Light gravitino productions in association with a neutralino (selectron) in e^+e^- (e^-γ) collisions are restudied in a scenario that the lightest supersymmetric particle is a gra…
Simulating spin-3/2 particles at colliders
Neil D. Christensen, P. de Aquino, N. Deutschmann +7
Support for interactions of spin-3/2 particles is implemented in the FeynRules and ALOHA packages and tested with the MadGraph 5 and CalcHEP event generators in the context of thre…
Spinor Operator Giving Both Angular Momentum and Parity
T. Matsuki, K. Mawatari, T. Morii +1
In heavy quark effective theory, heavy mesons which contain a heavy quark (or antiquark) are classified by , i.e., the total angular momentum and the parity $pi_l…
Higgs Quantum Numbers in Weak Boson Fusion
C. Englert, D. Goncalves, K. Mawatari +1
Recently, the ATLAS and CMS experiments have reported the discovery of a Higgs like resonance at the LHC. The next analysis step will include the determination of its spin and CP q…
Enhancement of HI absorption associated with the large-scale proto-cluster and characteristic structures with AGNs sculptured over Gpc scale in the SSA22 field
T. Hayashino, A. K. Inoue, K. Kousai +10
In the SSA22 field which exhibits a large-scale proto-cluster at , we carried out a spectroscopic survey for Lyman Break Galaxies (LBGs) with the VLT/VIMOS and identified 78…
A framework for Higgs characterisation
P. Artoisenet, P. de Aquino, F. Demartin +10
We introduce a framework, based on an effective field theory approach, that allows one to perform characterisation studies of the boson recently discovered at the LHC, for all the…
An H-alpha search for over-dense regions at z=2.23
Y. Matsuda, Ian Smail, J. E. Geach +16
We present the results of a narrow-band (H2S1, 2.121/0.021um) imaging search with WFCAM/UKIRT for H-alpha emitters around several potential signposts of rare (10^-7-10^-8 Mpc^-3) o…
Polarization effects in tau production by neutrino
K. Hagiwara, K. Mawatari, H. Yokoya
We studied polarization effects in tau production by neutrino-nucleon scattering. Quasi-elastic scattering, resonance production and deep inelastic scattering processes are…
HELAS and MadGraph with goldstinos
K. Mawatari, Y. Takaesu
Fortran subroutines to calculate helicity amplitudes with goldstinos, which appear as the longitudinal modes of massive gravitinos in high energy processes, are added to the HELAS…
Handbook of LHC Higgs Cross Sections: 4. Deciphering the Nature of the Higgs Sector
D. de Florian, C. Grojean, F. Maltoni +373
This Report summarizes the results of the activities of the LHC Higgs Cross Section Working Group in the period 2014-2016. The main goal of the working group was to present the sta…
Nitrogen abundances in star-forming galaxies 2.2 Gyr after the Big Bang are not elevated
D. Schaerer, Y. I. Izotov, R. Marques-Chaves +22
Using deep medium-resolution JWST rest-optical spectra of a sample of typical star-forming galaxies (Lyman break galaxies and Lyman- emitters) from the LyC22 survey at $z \sim…
Pseudoscalar Form Factors in Tau-Neutrino Nucleon Scattering
K. Hagiwara, K. Mawatari, H. Yokoya
We investigate the pseudoscalar transition form factors of nucleon for quasi-elastic scattering and Îresonance production in tau-neutrino nucleon scattering via the charged curren…
Discovery of a Damped Lya Absorber at z = 3.3 along a galaxy sight-line in the SSA22 field
K. Mawatari, A. K. Inoue, K. Kousai +5
Using galaxies as background light sources to map the Lya absorption lines is a novel approach to study Damped Lya Absorbers (DLAs). We report the discovery of an intervening z = 3…
0^+ and 1^+ States of B and B_s Mesons
T. Matsuki, K. Mawatari, T. Morii +1
Predicted masses of J^P=0^+ and 1^+ states of D_{sJ} and D by a potential model proposed some time ago by two of us (T.M. and T.M.), in which the Hamiltonian and wave functions are…
Correlated decays of pair-produced scalar taus
K. Hagiwara, K. Mawatari, D. Rainwater +1
We study the quantum mechanical correlation between two identical neutralinos in the decays of minimal supersymmetric standard model (MSSM) scalar tau (stau) pair produced in e+e-…
Automized Squark-Neutralino Production to Next-to-Leading Order
T. Binoth, D. Goncalves, D. Lopez-Val +3
The production of one hard jet in association with missing transverse energy is a major LHC search channel motivated by many scenarios for physics beyond the Standard Model. In sce…
Light gravitino production in association with gluinos at the LHC
P. de Aquino, F. Maltoni, K. Mawatari +1
We study the jets plus missing energy signature at the LHC in a scenario where the gravitino is very light and the gluino is the next-to-lightest supersymmetric particle and prompt…