Predictocracy

Abramowicz, Michael

doi:10.12987/yale/9780300115994.001.0001

Cited by 20 publications

(26 citation statements)

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“…• Fits to DIS structure function data [88, based on the high-energy TMD factorization [17,18] or on other approaches (e.g. saturation formalism) to high-energy DIS, in some cases including the precision measurements [286,287] and TMD pdf uncertainties [88,276].…”

Section: Working With Tmds: Fits and Parameterizationsmentioning

confidence: 99%

Transverse Momentum Dependent (TMD) Parton Distribution Functions: Status and Prospects

Ángeles-Martínez¹,

Bacchetta²,

Balitsky³

et al. 2015

Acta Phys. Pol. B

282

238

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20 pagesInternational audienceWe provide a concise overview on transverse momentum dependent (TMD) parton distribution functions, their application to topical issues in high-energy physics phenomenology, and their theoretical connections with QCD resummation, evolution and factorization theorems. We illustrate the use of TMDs via examples of multi-scale problems in hadronic collisions. These include transverse momentum q_T spectra of Higgs and vector bosons for low q_T, and azimuthal correlations in the production of multiple jets associated with heavy bosons at large jet masses. We discuss computational tools for TMDs, and present an application of a new tool, TMDlib, to parton density fits and parameterizations

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Section: Working With Tmds: Fits and Parameterizationsmentioning

confidence: 99%

Transverse Momentum Dependent (TMD) Parton Distribution Functions: Status and Prospects

Ángeles-Martínez¹,

Bacchetta²,

Balitsky³

et al. 2015

Acta Phys. Pol. B

282

238

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“…The equations for the dynamical system (28,29) now have constant coefficients and no damping, δ = 0, so their solutions are periodic in proper time, with 30 see Abramowicz, 2016 [32] 31 we will use throughout units of lightyears (ly) 32 without the mass of the "dark matter halo" angular frequency by equation (45)…”

Section: Schwarzschild-kottler Metricmentioning

confidence: 99%

Existence and stability of circular orbits in time-dependent spherically symmetric spacetimes

Graf¹

2019

Gen Relativ Gravit

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For a general spherically four-dimensional metric the notion of "circularity" of a family of equatorial geodesic trajectories is defined in geometrical terms. The main object turns out to be the angular-momentum function J obeying a consistency condition involving the mean extrinsic curvature of the submanifold containing the geodesics. The analysis of linear stability is reduced to a simple dynamical system formally describing a damped harmonic oscillator. For static metrics the existence of such geodesics is given when J 2 > 0, and (J 2 ) ′ > 0 for stability. The formalism is then applied to the Schwarzschild-de Sitter solution, both in its static and in its time-dependent cosmological version, as well to the Kerr-de Sitter solution. In addition we present an approximate solution to a cosmological metric containing a massive source and solving the Einstein field equation for a massless scalar. * email: wolfgang.graf@univie.ac.at mulated and proved. In section 6 the static case is analyzed in some detail. In section 7 some examples are analyzed (including time-dependent ones) before concluding with a discussion of our results in section 8.The emphasis is on timelike orbits with nonvanishing angular-momentum, J = 0. However, for completeness also the case of radial timelike trajectories, J = 0 is briefly considered, as well as lightlike trajectories. It should be stressed that we deal exclusively with one-parameter families of trajectories sweeping the whole equatorial plane and not with isolated trajectories.1 for a review, see Carrera and Giulini, 2010 [25] 2 Turyshev et al., 2012 [27] 3 Hernandez, Jimenez, Allen, 2012 [28] 4 see McGaugh, 2005 [21] 5 for an introduction, see Milgrom, 2008 [24] 6 from now on, we cite this work only by its author-name 7 more generally, contraction of V with respect to the first (from the left) free vector slot of the tensorial object W 8 the only exception to this rule is the divergence of a vector V , when expressed as ∇·V 9 the only instance where we use the , -notation 10 for a more detailed formulation, see Proposition 13 of ch. 4 in O'Neill 11 w is usually denoted by ω 12 in fact, assuming w = 0, the canonical equatorial metric is hard to achieve -if at all 13 see also Carrera and Giulini, 2010 [25]

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“…In this section, we will investigate the new observables based on the accumulated JEP proposed in the previous section by analyzing Standard Model MC events, which are generated by Whizard 1.95 and showered by Pythia 6 at future e + e − colliders [13][14][15][16][17][18][19][20][21] for the center-of-mass energy 250 GeV and integrated luminosity 5 ab −1 . The signal events are classified into two channels according to Z boson decays: Z → e + e − and Z → µ + µ − .…”

Section: Simulationmentioning

confidence: 99%

“…In the past few years, several options have been proposed as a Higgs factory, for instance, Circular Electron-Positron Collider (CEPC) [13][14][15], Future Cir-cular Collider-electron-positron [16][17][18], and International Linear Collider (ILC) [19][20][21]. At the Higgs factory, the measurement of most of the Higgs properties can be expected to reach a high accuracy.…”

Section: Introductionmentioning

confidence: 99%

Probing the Higgs boson-gluon coupling via the jet energy profile at e+e− colliders

Zhao

Liu

et al. 2018

Phys. Rev. D

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The effective coupling of the Higgs boson to a gluon pair is one of the most important parameters to test the Standard Model and search for the new physics beyond. In this paper, we propose several new observables based on the jet energy profile to extract the effective coupling. The statistical uncertainties of the effective coupling extracted by using new observables are derived and estimated based on the simulation at the future e + e − collider for 250 GeV center-of-mass energy and 5 ab −1 integrated luminosity. We found that the statistical uncertainties of effective coupling via the optimized observable can reach about 1.6% in the channels of a Z boson decaying to lepton pairs and is reduced by 52% compared to the relevant uncertainties in the conventional approach. These new observables potentially can be helpful for the measurement of effective coupling at future e + e − colliders.

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Predictocracy

Cited by 20 publications

References 0 publications

Transverse Momentum Dependent (TMD) Parton Distribution Functions: Status and Prospects

Transverse Momentum Dependent (TMD) Parton Distribution Functions: Status and Prospects

Existence and stability of circular orbits in time-dependent spherically symmetric spacetimes

Probing the Higgs boson-gluon coupling via the jet energy profile at e+e− colliders

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