SCOAP3 Repository 30 records found  1 - 10nextendSearch took 0.03 seconds. 
1. The unpolarized two-loop massive pure singlet Wilson coefficients for deep-inelastic scattering / Blümlein, J. ; De Freitas, A. ; Raab, C.G. ; Schönwald, K.
We calculate the massive two–loop pure singlet Wilson coefficients for heavy quark production in the unpolarized case analytically in the whole kinematic region and derive the threshold and asymptotic expansions. [...]
Published in Nuclear Physics B 945 (2019) 10.1016/j.nuclphysb.2019.114659
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2. FCC Physics Opportunities / Abada, A. ; Abbrescia, M. ; AbdusSalam, S. S. ; Abdyukhanov, I. ; et al
We review the physics opportunities of the Future Circular Collider, covering its e + e - , pp, ep and heavy ion programmes. [...]
Published in EPJC 79 (2019) 474 10.1140/epjc/s10052-019-6904-3
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3. The O ( α 2 ) initial state QED corrections to e + e − annihilation to a neutral vector boson revisited / Blümlein, J. ; De Freitas, A. ; Raab, C.G. ; Schönwald, K.
We calculate the non-singlet, the pure singlet contribution, and their interference term, at O(α2) due to electron-pair initial state radiation to e+e− annihilation into a neutral vector boson in a direct analytic computation without any approximation. [...]
Published in Physics letters B 791 (2019) 206-209 10.1016/j.physletb.2019.02.038
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4. Asymptotic behavior of the heavy quark form factors at higher order / Blümlein, J. ; Marquard, P. ; Rana, N.
In the asymptotic limit Q2m2, the heavy quark form factors exhibit Sudakov behavior. [...]
Published in Physical Review D 99 (2019) 10.1103/PhysRevD.99.016013 arXiv:1810.08943
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5. Automated solution of first order factorizable systems of differential equations in one variable / Ablinger, J. ; Blümlein, J. ; Marquard, P. ; Rana, N. ; et al
We present an algorithm which allows to solve analytically linear systems of differential equations which factorize to first order. [...]
Published in Nuclear Physics B 939 (2019) 253-291 10.1016/j.nuclphysb.2018.12.010
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6. NLO PDFs from the ABMP16 fit / Alekhin, S. ; Blümlein, J. ; Moch, S.
We perform a global fit of parton distribution functions (PDFs) together with the strong coupling constant αs and the quark masses mc , mb and mt at next-to-leading order (NLO) in QCD. [...]
Published in EPJC 78 (2018) 477 10.1140/epjc/s10052-018-5947-1
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7. Heavy quark form factors at three loops in the planar limit / Ablinger, J. ; Blümlein, J. ; Marquard, P. ; Rana, N. ; et al
We compute the color-planar and complete light quark non-singlet contributions to the heavy quark form factors in the case of the axialvector, scalar and pseudoscalar currents at three loops in perturbative QCD. [...]
Published in Physics letters B (2018) 10.1016/j.physletb.2018.05.077
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8. Heavy quark form factors at two loops / Ablinger, J. ; Behring, A. ; Blümlein, J. ; Falcioni, G. ; et al
We compute the two-loop QCD corrections to the heavy quark form factors in the case of the vector, axial-vector, scalar and pseudoscalar currents up to second order in the dimensional parameter ϵ=(4D)/2. [...]
Published in Physical Review D 97 (2018) 10.1103/PhysRevD.97.094022 arXiv:1712.09889
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9. The variable flavor number scheme at next-to-leading order / Blümlein, J. ; De Freitas, A. ; Schneider, C. ; Schönwald, K.
We present the matching relations of the variable flavor number scheme at next-to-leading order, which are of importance to define heavy quark partonic distributions for the use at high energy colliders such as Tevatron and the LHC. [...]
Published in Physics letters B (2018) 10.1016/j.physletb.2018.05.054
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10. The two-mass contribution to the three-loop gluonic operator matrix element Agg,Q(3) / Ablinger, J. ; Blümlein, J. ; De Freitas, A. ; Goedicke, A. ; et al
We calculate the two-mass QCD contributions to the massive operator matrix element Agg,Q at O(αs3) in analytic form in Mellin N - and z -space, maintaining the complete dependence on the heavy quark mass ratio. [...]
Published in Nuclear Physics B (2018) 10.1016/j.nuclphysb.2018.04.023
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6 Blümlein, Johannes
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