Compton scattering from<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">C</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>12</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>using tagged photons in the energy range 65–115 MeV

Myers, L. S.; Shoniyozov, Khayrullo; Preston, M.; Annand, J. R. M.; Boselli, Maddalena; Briscoe, W. J.; Brudvik, J.; Capone, J.; Feldman, G.; Fissum, Kevin; Hansen, Kurt Schaldemose; Henshaw, S. S.; Isaksson, L.; Jebali, R. Al; Kovash, M. A.; Lewis, Kasey; Lundin, Magnus; MacGregor, I. J. D.; Middleton, D. G.; Mittelberger, D. E.; Murray, M.; Nathan, Alan M.; Nutbeam, S.; O’Rielly, G. V.; Schrøder, B.; Seitz, B.; Stave, S.; Weller, H.R.

doi:10.1103/physrevc.89.035202

Cited by 8 publications

(4 citation statements)

References 28 publications

(85 reference statements)

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“…1 The integrated scattered-photon yield was normalized to the number of photons incident on the target and corrected for rate-dependent factors [29] which were due to the physical overlap of the FP counters. This procedure has been systematically verified in measurements of photon scattering from carbon [30,31]. The number of photons incident on the target was determined from the number of post-bremsstrahlung electrons detected in each FP channel, the tagging efficiency, and the ratedependent correction factors.…”

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confidence: 99%

Measurement of Compton Scattering from the Deuteron and an Improved Extraction of the Neutron Electromagnetic Polarizabilities

et al. 2014

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The electromagnetic polarizabilities of the nucleon are fundamental properties that describe its response to external electric and magnetic fields. They can be extracted from Compton-scattering data-and have been, with good accuracy, in the case of the proton. In contradistinction, information for the neutron requires the use of Compton scattering from nuclear targets. Here we report a new measurement of elastic photon scattering from deuterium using quasimonoenergetic tagged photons at the MAX IV Laboratory in Lund, Sweden. These first new data in more than a decade effectively double the world dataset. Their energy range overlaps with previous experiments and extends it by 20 MeV to higher energies. An analysis using Chiral Effective Field Theory with dynamical ∆(1232) degrees of freedom shows the data are consistent with and within the world dataset. After demonstrating that the fit is consistent with the Baldin sum rule, extracting values for the isoscalar nucleon polarizabilities and combining them with a recent result for the proton, we obtain the neutron polarizabilities as αn = [11.55 ± 1.25(stat) ± 0.2(BSR) ± 0.8(th)] × 10 −4 fm 3 and βn = [3.65 ∓ 1.25(stat) ± 0.2(BSR) ∓ 0.8(th)] × 10 −4 fm 3 , with χ 2 = 45.2 for 44 degrees of freedom.

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confidence: 99%

Measurement of Compton Scattering from the Deuteron and an Improved Extraction of the Neutron Electromagnetic Polarizabilities

et al. 2014

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“…Future LQCD calculations at the physical quark masses will determine whether this effect persists and predict the electromagnetic polarizabilities of the deuteron and other light nuclei in nature. Such calculations will also determine the role of nuclear forces and gauge-invariant electromagnetic two-nucleon operators in the electromagnetic structure of light nuclei, and complement the constraints from upcoming experiments that will extract deuteron polarizabilities at the HIγS facility [510], MAX-Lab at Lund [511], and at MAMI in Mainz [512], as well as next-generation of Compton scattering experiments [513][514][515] that will extend those studies to different nuclear targets.…”

Section: Future Impactmentioning

confidence: 99%

Nuclear matrix elements from lattice QCD for electroweak and beyond-Standard-Model processes

Davoudi,

Detmold,

Orginos

et al. 2020

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Lattice QCD for nuclear physics A. Lattice QCD 1. Correlation functions 2. Nuclear matrix elements B. Lattice QCD for few-and many-body systems 1. Current status of studies of nuclei 2. Scattering and transition amplitudes from finite-volume correlation functions 3. Matching to nuclear effective field theories and models C. Technical challenges and developments in lattice QCD studies of nuclei 1. The signal-to-noise problem 2. Excited-state contamination 3. Correlation-function complexity III. Electromagnetic interactions of light nuclei A. Magnetic moments and polarizabilities B. Two nucleons in strong magnetic fields C. The np → dγ radiative capture process D. Future impact IV. Nuclear matrix elements of weak currents A. Proton-proton fusion B. Tritium β decay C. Flavor-separated axial charges of light nuclei D. Hadronic parity violation E. Future impact V. Neutrinoful and neutrinoless double-β decays A. Neutrinoful double-β decay B. Neutrinoless double-β decay 1. Long-distance matrix elements for 0νββ 2. Short-distance matrix elements for 0νββ C. Future impact VI. Nuclear matrix elements for beyond-Standard-Model physics A. Scalar matrix elements B. Tensor matrix elements C. Baryon-number violation D. Future impact VII. Outlook

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“…The first run period employed an electron-beam energy of 144 MeV; the second run period used 165 MeV. The first week of each period was dedicated to in-beam studies (see below), measurements of 12 C(γ,γ) [33] to establish the absolute normalization and systematics of the setup, and cooling of the liquid-deuterium target. The remaining three weeks were used to perform the measurements on deuterium reported in this article.…”

Section: Methodsmentioning

confidence: 99%

“…We note that this procedure has been used to successfully extract Compton scattering cross sections from carbonsee Refs. [33,38]. A short summary is presented below.…”

Section: Rate-dependent Correctionsmentioning

confidence: 99%

Compton scattering from the deuteron below pion-production threshold

et al. 2015

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Differential cross sections for elastic scattering of photons from the deuteron have recently been measured at the Tagged-Photon Facility at the MAX IV Laboratory in Lund, Sweden. These first new measurements in more than a decade further constrain the isoscalar electromagnetic polarizabilities of the nucleon and provide the first-ever results above 100 MeV, where the sensitivity to the polarizabilities is increased. We add 23 points between 70 and 112 MeV, at angles 60• , 120• and 150• . Analysis of these data using a Chiral Effective Field Theory indicates that the cross sections are both self-consistent and consistent with previous measurements. Extracted values of αs = [12.1 ± 0.8(stat) ± 0.2(BSR) ± 0.8(th)] × 10 −4 fm 3 and βs = [2.4 ± 0.8(stat) ± 0.2(BSR) ± 0.8(th)] × 10 −4 fm 3 are obtained from a fit to these 23 new data points. This paper presents in detail the experimental conditions and the data analysis used to extract the cross sections.

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Compton scattering fromC12using tagged photons in the energy range 65–115 MeV

Cited by 8 publications

References 28 publications

Measurement of Compton Scattering from the Deuteron and an Improved Extraction of the Neutron Electromagnetic Polarizabilities

Measurement of Compton Scattering from the Deuteron and an Improved Extraction of the Neutron Electromagnetic Polarizabilities

Nuclear matrix elements from lattice QCD for electroweak and beyond-Standard-Model processes

Compton scattering from the deuteron below pion-production threshold

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