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1.
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Photon pair production in gluon fusion: Top quark effects around threshold
/ Chen, Long (Munich, Max Planck Inst.) ; Heinrich, Gudrun (Munich, Max Planck Inst.) ; Jahn, Stephan (Munich, Max Planck Inst.) ; Jones, Stephen P. (CERN) ; Kerner, Matthias (Zurich U.) ; Schlenk, Johannes (PSI, Villigen) ; Yokoya, Hiroshi (Korea Inst. Advanced Study, Seoul)
We present a calculation of the NLO QCD corrections to the loop-induced production of a photon pair through gluon fusion, including massive top quarks at two loops. The two-loop virtual amplitudes are computed via projecting onto a set of Lorentz structures related to linear polarisation states of external gauge bosons. [...]
arXiv:1912.05943; MPP-2019-254.-
SISSA, 2019-12-12 - 11 p.
- Published in : PoS RADCOR2019 (2019) 026
Fulltext: PoS(RADCOR2019)026 - PDF; 1912.05943 - PDF;
In : 14th International Symposium on Radiative Corrections : Application of Quantum Field Theory to Phenomenology, Avignon, France, 8 - 13 Sep 2019, pp.026
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2.
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Photon pair production in gluon fusion: Top quark effects at NLO with threshold matching
/ Chen, Long (Munich, Max Planck Inst.) ; Heinrich, Gudrun (Munich, Max Planck Inst.) ; Jahn, Stephan (Munich, Max Planck Inst.) ; Jones, Stephen P. (CERN) ; Kerner, Matthias (Zurich U.) ; Schlenk, Johannes (PSI, Villigen) ; Yokoya, Hiroshi (Korea Inst. Advanced Study, Seoul)
We present a calculation of the NLO QCD corrections to the loop-induced production of a photon pair through gluon fusion, including massive top quarks at two loops, where the two-loop integrals are calculated numerically. Matching the fixed-order NLO results to a threshold expansion, we obtain accurate results around the top quark pair production threshold. [...]
arXiv:1911.09314; CERN-TH-2019-195; MPP-2019-236; PSI-PR-19-24; ZU-TH 48/19.-
2020-04-20 - 26 p.
- Published in : JHEP 2004 (2020) 115
Article from SCOAP3: PDF; Fulltext: PDF;
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3.
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T-odd Asymmetry in W+jet Events at the LHC
/ Frederix, Rikkert (CERN) ; Hagiwara, Kaoru (Sokendai, Tsukuba) ; Yamada, Toshifumi (Taiwan, Natl. Central U.) ; Yokoya, Hiroshi (Toyama U.)
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$\ddot{\i}$ve-T-reversal where both the three-momenta and angular momenta are reversed. Perturbative QCD predicts non-zero polarization at the one-loop level, which can be measured as parity-odd components in the angular distribution of charged leptons from the decay of W bosons. [...]
arXiv:1407.1016; CERN-PH-TH-2014-120; KEK-TH-1750; UT-HET-095.-
2014 - 5 p.
- Published in : Phys. Rev. Lett. 113 (2014) 152001
APS published version, local copy: PDF; Fulltext: PDF; External link: Preprint
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4.
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Higgs Working Group Report of the Snowmass 2013 Community Planning Study
/ Dawson, S (RIKEN BNL) ; Gritsan, A (Johns Hopkins U.) ; Logan, H (Carleton U.) ; Qian, J (Michigan U.) ; Tully, C (Princeton U.) ; Van Kooten, R (Indiana U.) ; Ajaib, A ; Anastassov, A ; Anderson, I ; Bake, O et al.
This report summarizes the work of the Energy Frontier Higgs Boson working group of the 2013 Community Summer Study (Snowmass). [...]
arXiv:1310.8361.
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2013.
Preprint
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5.
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ILC Higgs White Paper
/ Asner, D.M. (PNL, Richland) ; Barklow, T. (SLAC) ; Calancha, C. (KEK, Tsukuba) ; Fujii, K. (KEK, Tsukuba) ; Graf, N. (SLAC) ; Haber, H.E. (UC, Santa Cruz) ; Ishikawa, A. (Tohoku U.) ; Kanemura, S. (Toyama U.) ; Kawada, S. (Hiroshima U.) ; Kurata, M. (Tokyo U.) et al.
The ILC Higgs White Paper is a review of Higgs Boson theory and experiment at the International Linear Collider (ILC). [...]
arXiv:1310.0763.
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2013. - 152 p.
PDF on ECONF - Proceedings write-up on ECONF - SLAC Document Server - Full text
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6.
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Measuring the top Yukawa coupling at the ILC at $\sqrt{s}$ = 500 GeV
/ Yonamine, Ryo (Tsukuba, Graduate U. Adv. Studies) ; Ikematsu, Katsumasa (Siegen U.) ; Tanabe, Tomohiko (Tokyo U., ICEPP) ; Fujii, Keisuke (KEK, Tsukuba) ; Kiyo, Yuichiro (KEK, Tsukuba) ; Sumino, Yukinari (Tohoku U.) ; Yokoya, Hiroshi (CERN ; Taiwan, Natl. Taiwan U. ; NCTS, Taipei)
We report on the feasibility of the direct measurement of the top Yukawa coupling g_t at the International Linear Collider (ILC) during its first phase of operation with a center-of-mass energy of 500 GeV. The signal and background models incorporate the non-relativistic QCD corrections which enhance the production cross section near the t-tbar threshold. [...]
arXiv:1104.5132.-
2011 - 9 p.
- Published in : Phys. Rev. D 84 (2011) 014033
APS Published version, local copy: PDF; Fulltext: PDF; External link: Preprint
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7.
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Bound-state effects on kinematical distributions of top quarks at hadron colliders
/ Sumino, Yukinari (Tohoku U.) ; Yokoya, Hiroshi (CERN)
First we present a theoretical framework to compute the fully differential cross sections for the top-quark productions and their subsequent decays at hadron colliders, incorporating the bound-state effects which are important in the t\bar{t} threshold region. We include the bound-state effects such that the cross sections are correct in the LO approximation both in the threshold and high-energy regions. [...]
arXiv:1007.0075; TU-867; CERN-PH-TH-2010-147.-
2010 - 41 p.
Article from SCOAP3: PDF; Erratum: PDF; Fulltext: PDF; Springer Open Access article: PDF; External link: Preprint
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