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The resummation of the low-phistar domain of Z production
High Energy Physics - Phenomenology · Submitted 4 Jun 2013
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We present and discuss a next-to-next-to-leading log (NNLL) resummed calculation of a related observable, namely $\phi^*$ (phistar), that was recently introduced because of its distinct experimental advantages, but which is nonetheless sensitive to similar physics: soft-collinear gluon emission in the initial state.
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The abstract, sentence by sentence
The presence of large logarithms in QCD corrections to observables spoils the validity of a calculation truncated at finite order and calls for an all-orders approach. The transverse momentum, $Q_T$, spectrum of massive lepton pairs, produced in hadron colliders by the Drell-Yan mechanism, has received a great deal of attention in electroweak phenomenology. We present and discuss a next-to-next-to-leading log (NNLL) resummed calculation of a related observable, namely $\phi^*$ (phistar), that was recently introduced because of its distinct experimental advantages, but which is nonetheless sensitive to similar physics: soft-collinear gluon emission in the initial state. We also present various comparisons to collision data at the Tevatron and the LHC.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | The presence of large logarithms in QCD corrections to observables spoils the validity of a calculation truncated at finite order and calls for an all-orders approach. | background 1.00 | 0.04 | 0.05 | asserted 1.00 |
| s1 | The transverse momentum, $Q_T$, spectrum of massive lepton pairs, produced in hadron colliders by the Drell-Yan mechanism, has received a great deal of attention in electroweak phenomenology. | background 1.00 | 0.04 | 0.03 | asserted 1.00 |
| s2 | We present and discuss a next-to-next-to-leading log (NNLL) resummed calculation of a related observable, namely $\phi^*$ (phistar), that was recently introduced because of its distinct experimental advantages, but which is nonetheless sensitive to similar physics: soft-collinear gluon emission in the initial state. | contribution 1.00 | 0.94 | 0.46 | asserted 1.00 |
| s3 | We also present various comparisons to collision data at the Tevatron and the LHC. | contribution 0.83 | 0.86 | 0.06 | asserted 0.96 |
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The paper
Original abstract
The presence of large logarithms in QCD corrections to observables spoils the validity of a calculation truncated at finite order and calls for an all-orders approach. The transverse momentum, $Q_T$, spectrum of massive lepton pairs, produced in hadron colliders by the Drell-Yan mechanism, has received a great deal of attention in electroweak phenomenology. We present and discuss a next-to-next-to-leading log (NNLL) resummed calculation of a related observable, namely $\phi^*$ (phistar), that was recently introduced because of its distinct experimental advantages, but which is nonetheless sensitive to similar physics: soft-collinear gluon emission in the initial state. We also present various comparisons to collision data at the Tevatron and the LHC.
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What it cites · 6 sentences without a confident label
Compares with 2 papers
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The phenomenology reported herein makes use of a state-of-the-art resummed calculation, accurate to next-to-next-to-leading log (NNLL), which has most recently been compared with ATLAS data [ref] at $√(s)=7$ TeV, for both the $Q_T$ and $ϕ^*$ observables, as shown in Fig. [ref].
Measurement of angular correlations in Drell-Yan lepton pairs to probe Z/gamma* boson transverse momentum at sqrt(s)=7 TeV with the ATLAS detector · Introduction · 0.89
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This is shown in Fig. [ref], alongside the purely perturbative prediction with scale uncertainties included, both in comparison with DØ data [ref] .
Precise study of the Z/gamma* boson transverse momentum distribution in ppbar collisions using a novel technique · Introduction · 0.87
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