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Top quark production in the process $e^+e^- \to t\bar{t}$ at a future linear electron positron collider with polarised beams is a powerful tool to determine indirectly the scale of new physics. The presented study, based on a detailed…

High Energy Physics - Experiment · Physics 2015-09-18 M. S. Amjad , S. Bilokin , M. Boronat , P. Doublet , T. Frisson , I. Garcìa Garcìa , M. Perelló , R. Pöschl , F. Richard , E. Ros , J. Rouëné , P. Ruiz Femenia , M. Vos

The $\tau$ lepton arising from the scalar tau ($\st$) decay is naturally polarized. $\ptau$ depends on the left--right mixing of the $\st$ and the gaugino--higgsino mixing of the neutralino. The polarization $\ptau$ could be measured from…

High Energy Physics - Phenomenology · Physics 2009-10-28 Mihoko M. Nojiri

The problem of summation of the perturbation series for the process of lepton pair production in relativistic ion collisions is investigated. We show that the amplitude of this process can be obtained in the compact analytical form, if one…

High Energy Physics - Phenomenology · Physics 2008-11-26 S. R. Gevorkyan , E. A. Kuraev

In this contribution, we summarize and discuss recent theoretical progress on the Standard-Model calculation of joint polarized cross sections of massive multi-boson processes with fully leptonic decays. The topics include fixed-order…

High Energy Physics - Phenomenology · Physics 2025-09-25 Thi Nhung Dao , Duc Ninh Le

We introduce a methodology and investigate the feasibility of measuring quantum properties of tau lepton pairs in the $H \to \tau^+ \tau^-$ decay at future lepton colliders. In particular, observation of entanglement, steerability and…

High Energy Physics - Phenomenology · Physics 2023-05-15 Mohammad Mahdi Altakach , Priyanka Lamba , Fabio Maltoni , Kentarou Mawatari , Kazuki Sakurai

Measurement of $t\bar{t}$ pair production cross sections with an integrated luminosity of around 1 fb$^{-1}$ at $\sqrt{s}$ = 7 TeV obtained with the ATLAS and CMS detectors are reported. The inclusive cross sections in dilepton (ee, $e\mu$,…

High Energy Physics - Experiment · Physics 2015-06-03 Tae Jeong Kim

The performance of the ILD detector at the ILC for the analysis of $\mu$ and $\tau$ channels at the SUSY benchmark-point SPS1a' has been studied with full detector simulation. It is concluded that if 500 fb$^{-1}$ is delivered to the…

High Energy Physics - Experiment · Physics 2009-02-17 Mikael Berggren , Nicola d'Ascenzo , Peter Schade , Olga Stempel

We compare the dispersion of the charges in a central rapidity box according to the Dual Parton Model with the predictions of statistical models. Significant deviations are found in heavy ion collisions at RHIC and LHC energies. Hence the…

High Energy Physics - Phenomenology · Physics 2009-01-07 Fritz W. Bopp , Johannes Ranft

Future linear colliders plan to collide polarised beams and the planned physics reach requires knowledge of the state of polarisation as precisely as possible. The polarised beams can undergo depolarisation due to various mechanisms. In…

Accelerator Physics · Physics 2017-08-23 I. Bailey , C. Bartels , M. Beckmann , A. Hartin , C. Helebrant , D. Kaefer , J. List , G. Moortgat-Pick

Automatic side-by-side evaluation has emerged as a promising approach to evaluating the quality of responses from large language models (LLMs). However, analyzing the results from this evaluation approach raises scalability and…

The spin asymmetry parameter $A_\tau$ characterizing the angular distribution of the total hadron momentum in the decay of a polarized tau can be calculated rigorously using perturbative QCD and the operator product expansion. Perturbative…

High Energy Physics - Phenomenology · Physics 2009-10-22 Eric Braaten

Initially unpolarized solar radiation becomes polarized by scattering in the Earth's atmosphere. In particular molecular scattering polarizes electromagnetic radiation, but also scattering of radiation at aerosols, cloud droplets and ice…

Earth and Planetary Astrophysics · Physics 2019-01-08 C. Emde , V. Barlakas , C. Cornet , F. Evans , Z. Wang , L. C. -Labonotte , A. Macke , B. Mayer , M. Wendisch

We predict the polarization of Lambda and antiLambda hyperons in peripheral heavy ion collisions at ultrarelativistic energy, based on the assumption of local thermodynamical equilibrium at freeze-out. The polarization vector is…

Nuclear Theory · Physics 2013-11-21 F. Becattini , L. Csernai , D. J. Wang

In this work, we study the possible unparticle signatures through tau pair production e+e- -> tau+tau- process at the low energy particle factories. We take into account lepton flavor conserving (s-channel) and violating (t-channel)…

High Energy Physics - Phenomenology · Physics 2009-06-16 O. Cakir , K. O. Ozansoy

We study the sensitivity of LEP II and NLC, via two photon collisions, to the effects of anomalous $\tau \overline{\tau} \gamma$ couplings. We also discuss some CP-odd observables that can be useful to disentangle the contributions from the…

High Energy Physics - Phenomenology · Physics 2010-11-01 Fernando Cornet , J. I. Illana

This paper discusses the transmission line pulse (TLP) analysis, generally used for electrostatic discharge (ESD) device characterization, as high potential usable tool also for non-ESD structures. TLP technique, combined with DC and pulsed…

By explicitly representing the reaction times of discrete chemical systems as the firing times of independent, unit rate Poisson processes, we develop a new adaptive tau-leaping procedure. The procedure developed is novel in that accuracy…

Molecular Networks · Quantitative Biology 2009-11-13 David F. Anderson

We have developed a detector which records the full polarisation state of a terahertz (THz) pulse propagating in free space. The three-electrode photoconductive receiver simultaneously records the electric field of an electromagnetic pulse…

Other Condensed Matter · Physics 2009-09-29 E. Castro-Camus , J. Lloyd-Hughes , M. D. Fraser , H. H. Tan , C. Jagadish , M. B. Johnston

Aims.Recent studies have detected linear polarization in L dwarfs in the optical I band. Theoretical models have been developed to explain this polarization. These models predict higher polarization at shorter wavelengths. We discuss the…

Solar and Stellar Astrophysics · Physics 2015-05-14 R. Tata , E. L. Martin , S. Sengupta , N. Phan-Bao , M. R. Zapatero Osorio , H. Bouy

A Transition Radiation Detector (TRD) has been designed to improve the electron identification and trigger capability of the ALICE experiment at the Large Hadron Collider (LHC) at CERN. We present results from tests of a prototype of the…