activity
20072022
most citedObservation of a charged charmoniumlike structure Z_c(4020) and search for the Z_c(3900) in e+e- to pi+pi-h_c

459 citations · 10.9k across the 197 of their papers we have counts for

collaborators
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29 papers · 1 filter

nucl-ex2017★ 44 cited

Observation of top quark production in proton-nucleus collisions

CMS Collaboration

The first observation of top quark production in proton-nucleus collisions is reported using proton-lead data collected by the CMS experiment at the CERN LHC at a nucleon-nucleon c…

nucl-ex2017★ 55 cited

Study of and photoproduction at MAMI

V. L. Kashevarov, P. Ott, S. Prakhov +87

The reactions and have been measured from their thresholds up to the center-of-mass energy GeV with the tagged-photon facilities at the Mainz Microt…

nucl-ex2016★ 22 cited

Determination of the scalar polarizabilities of the proton using beam asymmetry in Compton scattering

V. Sokhoyan, E. J. Downie, E. Mornacchi +73

The scalar dipole polarizabilities, and , are fundamental properties related to the internal dynamics of the nucleon. The currently accepted values of the proton p…

nucl-ex2016★ 21 cited

Photoproduction ofeta-pi pairs off nucleons and deuterons

A. Kaeser, F. Mueller, J. Ahrens +66

Quasi-free photoproduction of -pairs has been investigated from threshold up to incident photon energies of 1.4 GeV, respectively up to photon-nucleon invariant masses up to 1.…

nucl-ex2016★ 11 cited

Photon asymmetry measurements of for E=320650 MeV

S. Gardner, D. Howdle, M. H. Sikora +97

High statistics measurements of the photon asymmetry for the pp reaction have been made in the center of mass energy range W=1214-145…

nucl-ex2015

Photoproduction of -pairs off protons and off neutrons

M. Dieterle, M. Oberle, J. Ahrens +71

Total cross sections, angular distributions, and invariant-mass distributions have been measured for the photoproduction of pairs off free protons and off nucleons bound i…

nucl-ex2015

The isospin structure of photoproduction of pi-eta pairs from the nucleon in the threshold region

A. Käser, J. Ahrens, J. R. M. Annand +71

Photoproduction of -pairs from nucleons has been investigated from threshold up to incident photon energies of ~1.4~GeV. The quasi-free reactions …

nucl-ex2015★ 10 cited

First measurement of target and beam-target asymmetries in the reaction

J. R. M. Annand, H. J. Arends, R. Beck +64

The first data on target and beam-target asymmetries for the reaction at photon energies from 1050 up to 1450 MeV are presented. The measurements were performed using…

nucl-ex2014★ 45 cited

Measurement of the transverse target and beam-target asymmetries in meson photoproduction at MAMI

C. S. Akondi, J. R. M. Annand, H. J. Arends +67

We present new data for the transverse target asymmetry T and the very first data for the beam-target asymmetry F in the reaction up to a center-of-mass energy…

nucl-ex2014★ 42 cited

Measurements of Double-Polarized Compton Scattering Asymmetries and Extraction of the Proton Spin Polarizabilities

P. P. Martel, R. Miskimen, P. Aguar-Bartolome +76

The spin polarizabilities of the nucleon describe how the spin of the nucleon responds to an incident polarized photon. The most model-independent way to measure the nucleon spin p…

nucl-ex2014★ 59 cited

Quasifree photoproduction of mesons off protons and neutrons

A2 Collaboration, D. Werthmüller, L. Witthauer +72

Differential and total cross sections for the quasifree reactions and have been determined at the MAMI-C electron accelerator using a liquid deu…

nucl-ex2014★ 58 cited

Photoproduction of the meson off the proton near threshold

I. I. Strakovsky, S. Prakhov, Y. I. Azimov +71

An experimental study of photoproduction on the proton was conducted by using the Crystal Ball and TAPS multiphoton spectrometers together with the photon tagging facility at t…

nucl-ex2014★ 28 cited

Photoproduction of pi0-mesons off neutrons in the nucleon resonance region

M. Dieterle, I. Keshelashvili, J. Ahrens +71

Precise angular distributions have been measured for the first time for the photoproduction of -mesons off neutrons bound in the deuteron. The effects from nuclear Fermi mot…

nucl-ex2014★ 22 cited

Measurement of the beam-helicity asymmetry in the photoproduction of -pairs off protons and off neutrons

M. Oberle, J. Ahrens, J. R. M. Annand +72

Beam-helicity asymmetries have been measured at the MAMI accelerator in Mainz for the photoproduction of mixed-charge pion pairs in the reactions …

nucl-ex2013★ 29 cited

Quasi-free photoproduction of eta-mesons off 3He nuclei

L. Witthauer, D. Werthmueller, I. Keshelashvili +70

Quasi-free photoproduction of -mesons has been measured off nucleons bound in He nuclei for incident photon energies from the threshold region up to 1.4 GeV. The experiment…

nucl-ex2013★ 48 cited

A narrow structure in the excitation function of eta-photoproduction off the neutron

D. Werthmueller, L. Witthauer, I. Keshelashvili +69

The photoproduction of -mesons off nucleons bound in H and He has been measured in coincidence with recoil protons and recoil neutrons for incident photon energies from…

nucl-ex2013★ 229 cited

Neutron skin of Pb from Coherent Pion Photoproduction

C. M. Tarbert, D. P. Watts, D. I. Glazier +57

Information on the size and shape of the neutron skin on Pb has been extracted from coherent pion photoproduction cross sections measured using the Crystal Ball together wi…

nucl-ex2013★ 30 cited

Measurement of the beam-helicity asymmetry in the photoproduction of -pairs off the proton and off the neutron

M. Oberle, B. Krusche, J. Ahrens +72

Beam-helicity asymmetries have been measured at the MAMI accelerator in Mainz for the photoproduction of neutral pion pairs in the reactions and $\vecγd…

nucl-ex2013★ 7 cited

Double pion photoproduction off nuclei - are there effects beyond final-state interaction?

Y. Maghrbi, R. Gregor, S. Lugert +60

Photoproduction of and pairs from nuclei has been measured over a wide mass range (H, Li, C, Ca, and Pb) for photon…

nucl-ex2013★ 25 cited

Coherent photoproduction of pi^0- and eta-mesons off 7Li

Y. Maghrbi, B. Krusche, J. Ahrens +60

Coherent photoproduction of -mesons from threshold ( 136 MeV) throughout the -resonance region and of -mesons close to the production threshold ($E_{th}…

nucl-ex2012★ 48 cited

Accurate Test of Chiral Dynamics in the \boldmath Reaction

D. Hornidge, P. Aguar Bartolome, J. R. M. Annand +64

A precision measurement of the differential cross sections and the linearly polarized photon asymmetry $Σ\equiv (dσ_\perp - dσ_\parallel) \slash (dσ_\perp + dσ_\parallel)$…

nucl-ex2012

Determination of the η mass with the Crystal Ball at MAMI-B

A. Nikolaev, P. Aguar-Bartolomé, J. Ahrens +59

A new precise determination of the η meson mass is presented. It is based on a measurement of the threshold for the γp -> pη reaction using the tagger focal-plane microscope detect…

nucl-ex2012★ 44 cited

Photoproduction of pi0pi0 and pi0pi+-pairs off the proton from threshold to the second resonance region

F. Zehr, B. Krusche, P. Aguar +59

Precise total cross-sections and invariant-mass distributions have been measured for photoproduction of pion pairs off the proton producing and final states fro…

nucl-ex2012★ 46 cited

Study of the gamma p --> pi0 pi0 p reaction with the Crystal Ball/TAPS at the Mainz

V. L. Kashevarov, A. Fix, S. Prakhov +68

The gamma p --> pi0 pi0 p reaction has been measured from threshold to 1.4 GeV using the Crystal Ball and TAPS photon spectrometers together with the photon tagging facility at the…