REVIEW
Threshold Resummation for Higgs Production in Effective Field Theory
High Energy Physics - Phenomenology · Submitted 26 Sep 2005 · 24 references
Pith's verdict: A real EFT cross-check of the known Higgs threshold-resummation result, with the load-bearing all-orders step asserted rather than shown.
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Referee report
The paper
The paper claims
An effective field theory reproduces the standard threshold resummation for Higgs production.
The reading
What carries the argument
The machinery is a scale-by-scale factorization of the gluon-Higgs coefficient function. A matching coefficient $C_g$ is extracted at $M_H$ from the gluon form factor, evolved down to $M_H/N$ with an anomalous dimension built from the cusp anomalous dimension $A_g$ and the soft coefficients $B_{1,g}$, and then connected to the parton distributions by DGLAP evolution. The matching coefficient $M_N$ at the intermediate scale is computed from full QCD in the soft limit, and the final resummed factor $G_N(M_H)$ is assembled from $|C|^2$, $M_N$, and the evolution exponentials. The decomposition $I=I_0+2B_2+2B_1+2B_0$ is what turns this EFT product into the standard resummation formula and defines the $D_g$ coefficients.
Extended reading notes
Core claim
The paper argues that the EFT matching and evolution can be reorganized into exactly the conventional threshold-resummation formula, order by order in the large logarithms. Its central identity is $I=I_0+2B_2+2B_1+2B_0$ in the exponent, and the paper states that this structure is valid to all orders in leading and sub-leading logarithms. Solving the resulting relations iteratively yields $D_g^{(1)}=0$, $D_g^{(2)}$, and the explicit $D_g^{(3)}$ in Eq. (26). The paper states that this $D_g^{(3)}$ agrees completely with the recent conventional calculations of Refs. [9,10], which is the concrete evidence offered for the equivalence at N$^3$LL.
Load-bearing premise
The load-bearing premise is that the all-orders exponentiation encoded in Eqs. (20)-(23), especially the decomposition $I=I_0+2B_2+2B_1+2B_0$ and the definition of $D_g$, is correct; the paper derives this structure only in outline, calling it 'a matter of some technical steps,' and verifies it explicitly only at N$^3$LL.
Editorial extensions
If this is right
- The same EFT matching and evolution can be applied to Drell-Yan production of $\gamma^*$, $W$, and $Z$ bosons, where only color factors change.
- Including the newly reproduced $D_g^{(3)}$ term should reduce the residual scale uncertainty in threshold-resummed Higgs production rates.
- The method provides an independent cross-check of the conventional pQCD resummation at N$^3$LL and can be extended to other observables that suffer from soft-gluon double logarithms.
- If the all-orders structure holds, the $D_g$ coefficients can be generated iteratively from known anomalous dimensions and matching coefficients rather than from a new full resummation calculation each time.
Reading between the lines
- The paper's scale-separation logic suggests that threshold resummation is not tied to the details of a soft-collinear Lagrangian; any correct matching onto light-cone operators should give the same $D_g$ coefficients.
- If the EFT route is reliable, it could be used to predict the next tower of logarithms for processes where the conventional calculation is cumbersome, such as joint threshold and small-$x$ resummation.
- A natural extension is to check whether the same decomposition organizes rapidity-dependent or transverse-momentum-dependent observables, where the relevant soft function has more than one scale.
Original abstract
We present an effective field theory to resum the large double logarithms originated from soft-gluon radiations at small final-state hadron invariant masses in Higgs and vector boson (\gamma^*, $W$ and $Z$) production at hadron colliders. The approach is conceptually simple, indepaendent of details of an effective field theory formulation, and valid to all orders in sub-leading logarithms. As an example, we show the result of summing the next-to-next-to-next leading logarithms is identical to that of standard pQCD factorization method.
The compiled record
The paper's own sentences, arranged, kept beside the review and separate from it. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.
The abstract, sentence by sentence
We present an effective field theory to resum the large double logarithms originated from soft-gluon radiations at small final-state hadron invariant masses in Higgs and vector boson (\gamma^*, $W$ and $Z$) production at hadron colliders. The approach is conceptually simple, indepaendent of details of an effective field theory formulation, and valid to all orders in sub-leading logarithms. As an example, we show the result of summing the next-to-next-to-next leading logarithms is identical to that of standard pQCD factorization method.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We present an effective field theory to resum the large double logarithms originated from soft-gluon radiations at small final-state hadron invariant masses in Higgs and vector boson (\gamma^*, $W$ and $Z$) production at hadron colliders. | contribution 0.96 | 0.91 | 0.35 | asserted 1.00 |
| s1 | The approach is conceptually simple, indepaendent of details of an effective field theory formulation, and valid to all orders in sub-leading logarithms. | method 0.38 | 0.44 | 0.13 | asserted 1.00 |
| s2 | As an example, we show the result of summing the next-to-next-to-next leading logarithms is identical to that of standard pQCD factorization method. | result 0.98 | 0.91 | 0.25 | asserted 1.00 |
What was examined, and what was not
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- S sections
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- C citations
- R cross-paper relations
References
How the literature uses it
50 arXiv papers cite this in 59 sentences
Papers citing it · 30 sentences without a confident label
Uses its method or tool 3 papers
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In the two-step procedure of Refs. [ref] one first integrates out the top quark at a scale $μ_t≊m_t$ and subsequently matches from the effective Lagrangian onto at $μ_h ≊m_H$.
Jet-veto resummation at N$^3$LL$_\text{p}$+NNLO in boson production processes · Implementation of the two-step procedure · 0.94
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The calculation of $σ(gg →h)_SM$ is based on [ref] , which combines the next-to-next-to-leading fixed-order corrections [ref] with resummation of both threshold logarithms from soft-gluon emission [ref] and terms of the form $(N_c πα_s )^n$ [ref] .
The Custodial Randall-Sundrum Model: From Precision Tests to Higgs Physics · Higgs-Boson Production · 0.87
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For the derivation of the CS kernel, we follow closely [ref] , where the kernel of the Collins-Soper evolution equation is defined through the $y_c$ dependence of the renormalized soft factor, [equation] and is itself subject to the following renormalization group equation, [equation] where $Γ_cusp^A$ is the cusp anomalous dimension in the adjoint representation, see [ref] for higher order terms.
Transverse Momentum Dependent Gluon Distribution within High Energy Factorization at Next-to-Leading Order · A comparison of the kernels of CS and BFKL evolution · 0.98
Uses its data or values 11 papers
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For the regular anomalous dimensions $γ[α_s, …]$, with the dots representing potential dependence on kinematical variables, we also expand them in $α_s/(4π)$, [equation] The quark and gluon anomalous dimensions through to three loops are [ref] [equation] Next, The soft anomalous dimension up to three loops is [ref] [equation] Finally, the rapidity anomalous dimension up to three loops is [ref] [equation]
The Three-Point Energy Correlator in the Coplanar Limit · Anomalous dimensions · 0.93
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The quark and gluon anomalous dimensions through to three loops are [ref] [equation]
The Transverse Energy-Energy Correlator at Next-to-Next-to-Next-to-Leading Logarithm · Anomalous Dimensions · 0.92
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The relevant color sums are [equation] The non-cusp hard anomalous dimension $γ^'_H$ is also color diagonal up to two loop order, and is thus a sum of quark and gluon pieces, (i.e) [equation] These are extracted from the expressions in [ref] and are given by [equation] where [ref] [equation] Using Eqns.
NNLL Resummation of Sudakov Shoulder Logarithms in the Heavy Jet Mass Distribution · Hard Functions · 0.88
Cites it as background 14 papers
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A complete calculation at NNLO [ref] and leading logarithms at N$^3$LO in the threshold limit [ref] and NNLL soft gluon resummation [ref] for the scalar Higgs boson production are known for more than a decade.
Pseudo-scalar Higgs Boson Production at Threshold N$^3$LO and N$^3$LL QCD · Introduction · 0.87
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Soft gluon resummation of the gluon fusion cross section has been performed to next-to-next-to-next-to-leading logarithmic(N$^3$LL) accuracy for the scalar Higgs case [ref] and to next-to-next-to-leading logarithmic(NNLL) accuracy for the pseudo-scalar case [ref] .
Rapidity distribution of pseudo-scalar Higgs boson to $\rm{\textbf{NNLO}_A+\overline{\textbf {NNLL}}}$ · Introduction · 0.96
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The fixed order cross-section is further improved by performing threshold resummation at the next-to-next-to-leading logarithmic (NNLL) accuracy [ref] and to the third logarithmic accuracy (N3LL) [ref] as well as resummation of $π^2$ terms [ref] arising from time-like Sudakov form factor.
Higgs boson rapidity distribution in bottom annihilation at NNLL and beyond · Introduction · 0.87
Discussion
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