Precision muon physics

Gorringe, T. P.; Hertzog, D. W.

doi:10.1016/j.ppnp.2015.06.001

Cited by 82 publications

(66 citation statements)

References 177 publications

(316 reference statements)

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“…The pion box is further used to explicitly verify the general results derived in section 2, in particular to demonstrate the convergence of the partial-wave expansion for its contribution to (g − 2) µ . Rescattering corrections to the pion box are discussed in section 4, including a numerical analysis of the S-wave contribution, before we conclude in section 5. Further details of the formalism are provided in the appendices.…”

Section: Jhep04(2017)161mentioning

confidence: 99%

“…5 In contrast, the explicit results for the two-pion dispersion relation in the S-wave approximation are very compact:…”

Section: Jhep04(2017)161mentioning

confidence: 99%

“…Arguably the most important result of this paper, especially in view of future applications and generalizations, concerns the derivation of theΠ i functions, which allows us to establish 5 In this notebook, we make use of FeynCalc [72,73].…”

Section: Summary Of the Formalismmentioning

confidence: 99%

“…In this way, one can also remedy the fact that the standard IAM fails to correctly reproduce the Adler zero [120,121], and is thus not fully consistent with chiral symmetry. The modified form of the IAM (mIAM) becomes [119] 5) where the additional term 8 8 For ππ scattering the expression simplifies because t 2 (s2) = 0 and t2(s)/t 2 (s2) = s − s2.…”

Section: Jhep04(2017)161mentioning

confidence: 99%

“…The ongoing E989 experiment at Fermilab [3] as well as complementary efforts by J-PARC E34 [4] aim at improving the precision by a factor of 4, see [5] for a detailed account of the experimental strategies in both cases. On the theory side, the uncertainty is dominated by hadronic effects [6][7][8], while QED [9] and electroweak [10] contributions are under control at the level of at least 1 × 10 −11 .…”

Section: Introductionmentioning

confidence: 99%

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Dispersion relation for hadronic light-by-light scattering: two-pion contributions

Colangelo

Hoferichter

Procura

et al. 2017

J. High Energ. Phys.

374

257

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In this third paper of a series dedicated to a dispersive treatment of the hadronic light-by-light (HLbL) tensor, we derive a partial-wave formulation for two-pion intermediate states in the HLbL contribution to the anomalous magnetic moment of the muon (g − 2) µ , including a detailed discussion of the unitarity relation for arbitrary partial waves. We show that obtaining a final expression free from unphysical helicity partial waves is a subtle issue, which we thoroughly clarify. As a by-product, we obtain a set of sum rules that could be used to constrain future calculations of γ * γ * → ππ. We validate the formalism extensively using the pion-box contribution, defined by two-pion intermediate states with a pion-pole left-hand cut, and demonstrate how the full known result is reproduced when resumming the partial waves. Using dispersive fits to high-statistics data for the pion vector form factor, we provide an evaluation of the full pion box, a π-box µ = −15.9(2)×10 −11 . As an application of the partial-wave formalism, we present a first calculation of ππ-rescattering effects in HLbL scattering, with γ * γ * → ππ helicity partial waves constructed dispersively using ππ phase shifts derived from the inverse-amplitude method. In this way, the isospin-0 part of our calculation can be interpreted as the contribution of the f 0 (500) to HLbL scattering in (g − 2) µ . We argue that the contribution due to charged-pion rescattering implements corrections related to the corresponding pion polarizability and show that these are moderate. Our final result for the sum of pion-box contribution and its S-wave rescattering corrections reads a π-box µ + a ππ,π-pole LHC µ,J=0 = −24(1) × 10 −11 .

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Section: Jhep04(2017)161mentioning

confidence: 99%

“…5 In contrast, the explicit results for the two-pion dispersion relation in the S-wave approximation are very compact:…”

Section: Jhep04(2017)161mentioning

confidence: 99%

Section: Summary Of the Formalismmentioning

confidence: 99%

Section: Jhep04(2017)161mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Dispersion relation for hadronic light-by-light scattering: two-pion contributions

Colangelo

Hoferichter

Procura

et al. 2017

J. High Energ. Phys.

374

257

View full text Add to dashboard Cite

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Low‐energy precision tests of the standard model: a snapshot

Hertzog

2015

Annalen der Physik

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This brief review describes a class of uniquely crafted particle physics experiments that typically each tackle just one investigation-and they do that very well. The aim of these experiments is to both establish Standard Model parameters and also to provide unique tests in search of new physics. I provide a brief snapshot of many of the current activities, selected with a bias toward low-energy and high precision. These include searches for permanent electric dipole moments, charged lepton flavor violation, tests of the weak interaction, and other broad searches for deviations from very precise Standard Model predictions, such as the muon's anomalous magnetic moment. I highlight what drives these efforts and how they might impact a new Standard Model.

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Muon disrupts AKT hydrogen bond network in cancer

Radisavljevic

2018

Journal Cellular Physiology

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A cancer microenvironment generates strong hydrogen bond network system by the positive feedback loops supporting cancer complexity and robustness. Such network functions through the AKT locus generating high entropic energy supporting cancer metastatic robustness. Charged lepton particle muon follows the rule of Bragg effect during a collision with hydrogen network in cancer cells. Muon beam dismantles hydrogen bond network in cancer by the muon‐catalyzed fusion, leading to apoptosis of cancer cells. Muon induces cumulative energy appearance on the hydrogen bond network in a cancer cell with its fast decay to an electron and two neutrinos. Thus, muon beam, muonic atom, muon neutrino shower, and electrons simultaneously cause fast neutralization of the AKT hydrogen bond network by the conversion of hydrogen into deuterium or helium, inactivating the hydrogen bond networks and inducing failure of cancer complexity and robustness with the disappearance of a malignant phenotype.

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Precision muon physics

Cited by 82 publications

References 177 publications

Dispersion relation for hadronic light-by-light scattering: two-pion contributions

Dispersion relation for hadronic light-by-light scattering: two-pion contributions

Low‐energy precision tests of the standard model: a snapshot

Muon disrupts AKT hydrogen bond network in cancer

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