Search results for: P. Nadel-Turonski

Items from 1 to 20 out of 32 results

article

Search for polarized antiproton production

D. Grzonka, D. Alfs, A. Asaturyan, M. Carmignotto, more

Hyperfine Interactions > 2019 > 240 > 1 > 1-8

The production of antiprotons is studied in view of possible polarization effects as basis for a polarized antiproton beam. If antiprotons are produced with some polarization, a quite simple procedure for the generation of a polarized antiproton beam could be worked out. The experiments are performed at the CERN PS test beam T11 where secondary particles with momenta around 3.5 GeV/c are selected...

article

Design and R&D of RICH detectors for EIC experiments

A. Del Dotto, C.-P. Wong, L. Allison, M. Awadi, more

Nuclear Instruments and Methods in Physics Research Section A: Accelerators,... > 2017 > 876 > C > 237-240

An Electron-Ion Collider (EIC) has been proposed to further explore the strong force and QCD, focusing on the structure and the interaction of gluon-dominated matter. A generic detector R&D program (EIC PID consortium) for the particle identification in EIC experiments was formed to explore technologically advanced solutions in this scope. In this context two Ring Imaging Cherenkov (RICH) counters...

article

Modular focusing ring imaging Cherenkov detector for electron–ion collider experiments

C.P. Wong, M. Alfred, L. Allison, M. Awadi, more

Nuclear Instruments and Methods in Physics Research Section A: Accelerators,... > 2017 > 871 > C > 13-19

A powerful new electron–ioncollider (EIC) has been recommended in the 2015 Long Range Plan for Nuclear Science for probing the partonic structure inside nucleons and nuclei with unprecedented precision and versatility [1]. EIC detectors are currently under development [2], all of which require hadron identification over a broad kinematic range. A prototype ring imaging Cherenkov detector has been...

article

Photon beam asymmetry Σ in the reaction γ→p→pω for Eγ=1.152 to 1.876 GeV

P. Collins, B.G. Ritchie, M. Dugger, F.J. Klein, more

Physics Letters B > 2017 > 773 > C > 112-120

Photon beam asymmetry Σ measurements for ω photoproduction in the reaction γ→p→ωp are reported for photon energies from 1.152 to 1.876 GeV. Data were taken using a linearly-polarized tagged photon beam, a cryogenic hydrogen target, and the CLAS spectrometer in Hall B at Jefferson Lab. The measurements obtained markedly increase the size of the database for this observable, extend coverage to higher...

article

Differential cross sections and polarization observables from CLAS K⁎ photoproduction and the search for new N⁎ states

A.V. Anisovich, K. Hicks, E. Klempt, V.A. Nikonov, more

Physics Letters B > 2017 > 771 > C > 142-150

The reaction γp→K⁎+Λ was measured using the CLAS detector for photon energies between the threshold and 3.9 GeV at the Thomas Jefferson National Accelerator Facility. For the first time, spin-density matrix elements have been extracted for this reaction. Differential cross sections, spin density matrix elements, and the Λ recoil polarization are compared with theoretical predictions using the BnGa...

article

Photon beam asymmetry Σ for η and η′ photoproduction from the proton

P. Collins, B.G. Ritchie, M. Dugger, A.V. Anisovich, more

Physics Letters B > 2017 > 771 > C > 213-221

Measurements of the linearly-polarized photon beam asymmetry Σ for photoproduction from the proton of η and η′ mesons are reported. A linearly-polarized tagged photon beam produced by coherent bremsstrahlung was incident on a cryogenic hydrogen target within the CEBAF Large Acceptance Spectrometer. Results are presented for the γp→ηp reaction for incident photon energies from 1.070 to 1.876 GeV, and...

article

Target and double spin asymmetries of deeply virtual π0 production with a longitudinally polarized proton target and CLAS

A. Kim, H. Avakian, V. Burkert, K. Joo, more

Physics Letters B > 2017 > 768 > C > 168-173

The target and double spin asymmetries of the exclusive pseudoscalar channel e→p→→epπ0 were measured for the first time in the deep-inelastic regime using a longitudinally polarized 5.9 GeV electron beam and a longitudinally polarized proton target at Jefferson Lab with the CEBAF Large Acceptance Spectrometer (CLAS). The data were collected over a large kinematic phase space and divided into 110 four-dimensional...

article

The Aerogel Čerenkov detector for the SHMS magnetic spectrometer in Hall C at Jefferson Lab

T. Horn, H. Mkrtchyan, S. Ali, A. Asaturyan, more

Nuclear Instruments and Methods in Physics Research Section A: Accelerators,... > 2017 > 842 > C > 28-47

Hadronic reactions producing strange quarks such as the exclusive p(e,e′K+)Λ and p(e,e′K+)Σ0 reactions, or the semi-inclusive p(e,e′K+)X reaction, play an important role in studies of hadron structure and the dynamics that bind the most basic elements of nuclear physics. The small-angle capability of the new Super High Momentum Spectrometer (SHMS) in Hall C, coupled with its high momentum reach –...

article

Electron-Ion Collider: The next QCD frontier

A. Accardi, J. L. Albacete, M. Anselmino, N. Armesto, more

The European Physical Journal A > 2016 > 52 > 9 > 1-100

. This White Paper presents the science case of an Electron-Ion Collider (EIC), focused on the structure and interactions of gluon-dominated matter, with the intent to articulate it to the broader nuclear science community. It was commissioned by the managements of Brookhaven National Laboratory (BNL) and Thomas Jefferson National Accelerator Facility (JLab) with the objective of presenting a summary...

article

First measurement of the helicity asymmetry E in η photoproduction on the proton

I. Senderovich, B.T. Morrison, M. Dugger, B.G. Ritchie, more

Physics Letters B > 2016 > 755 > C > 64-69

Results are presented for the first measurement of the double-polarization helicity asymmetry E for the η photoproduction reaction γp→ηp. Data were obtained using the FROzen Spin Target (FROST) with the CLAS spectrometer in Hall B at Jefferson Lab, covering a range of center-of-mass energy W from threshold to 2.15 GeV and a large range in center-of-mass polar angle. As an initial application of these...

article

First measurement of the polarization observable E in the p→(γ→,π+)n reaction up to 2.25 GeV

S. Strauch, W.J. Briscoe, M. Döring, E. Klempt, more

Physics Letters B > 2015 > 750 > C > 53-58

First results from the longitudinally polarized frozen-spin target (FROST) program are reported. The double-polarization observable E, for the reaction γ→p→→π+n, has been measured using a circularly polarized tagged-photon beam, with energies from 0.35 to 2.37 GeV. The final-state pions were detected with the CEBAF Large Acceptance Spectrometer in Hall B at the Thomas Jefferson National Accelerator...

article

Measurement of transparency ratios for protons from short-range correlated pairs

O. Hen, H. Hakobyan, R. Shneor, E. Piasetzky, more

Physics Letters B > 2013 > 722 > 1-3 > 63-68

Nuclear transparency, T_p(A), is a measure of the average probability for a struck proton to escape the nucleus without significant re-interaction. Previously, nuclear transparencies were extracted for quasi-elastic A(e,e^'p) knockout of protons with momentum below the Fermi momentum, where the spectral functions are well known. In this Letter we extract a novel observable, the transparency ratio, T...

article

Deep exclusive π⁺ electroproduction off the proton at CLAS

K. Park, M. Guidal, R. W. Gothe, J. M. Laget, more

The European Physical Journal A > 2013 > 49 > 1 > 1-18

The exclusive electroproduction of π ⁺ above the resonance region was studied using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Laboratory by scattering a 6GeV continuous electron beam off a hydrogen target. The large acceptance and good resolution of CLAS, together with the high luminosity, allowed us to measure the cross section for the γ ^* p → nπ ⁺ process in 140 (Q ², x _B, t)...

article

Evidence for the onset of color transparency in ρ0 electroproduction off nuclei

L. El Fassi, L. Zana, K. Hafidi, M. Holtrop, more

Physics Letters B > 2012 > 712 > 4-5 > 326-330

We have measured the nuclear transparency of the incoherent diffractive A(e,e′ρ0) process in ¹²C and ⁵⁶Fe targets relative to ²H using a 5 GeV electron beam. The nuclear transparency, the ratio of the produced ρ0ʼs on a nucleus relative to deuterium, which is sensitive to ρA interaction, was studied as function of the coherence length (lc), a lifetime of the hadronic fluctuation of the virtual photon,...

article

Measurement of the nuclear multiplicity ratio for Ks0 hadronization at CLAS

A. Daniel, K. Hicks, W.K. Brooks, H. Hakobyan, more

Physics Letters B > 2011 > 706 > 1 > 26-31

The influence of cold nuclear matter on lepto-production of hadrons in semi-inclusive deep inelastic scattering is measured using the CLAS detector in Hall B at Jefferson Lab and a 5.014 GeV electron beam. We report the Ks0 multiplicity ratios for targets of C, Fe, and Pb relative to deuterium as a function of the fractional virtual photon energy z transferred to the Ks0 and the transverse momentum...

article

Precise measurements of beam spin asymmetries in semi-inclusive π0 production

M. Aghasyan, H. Avakian, P. Rossi, E. De Sanctis, more

Physics Letters B > 2011 > 704 > 5 > 397-402

We present studies of single-spin asymmetries for neutral pion electroproduction in semi-inclusive deep-inelastic scattering of 5.776 GeV polarized electrons from an unpolarized hydrogen target, using the CEBAF Large Acceptance Spectrometer (CLAS) at the Thomas Jefferson National Accelerator Facility. A substantial sinϕh amplitude has been measured in the distribution of the cross section asymmetry...

article

Near-threshold photoproduction of ϕ mesons from deuterium

X. Qian, W. Chen, H. Gao, K. Hicks, more

Physics Letters B > 2011 > 696 > 4 > 338-342

We report the first, kinematically-complete measurement of the differential cross section of ϕ-meson photoproduction from deuterium near the production threshold for a proton using the CLAS detector and a tagged-photon beam in Hall B at Jefferson Lab. The measurement was carried out by a triple coincidence detection of a proton, K+ and K− near the theoretical production threshold of 1.57 GeV. The...

article

Double-differential cross sections and kerma coefficients for light-charged particles produced by 96 MeV neutrons on carbon

U. Tippawan, S. Pomp, J. Blomgren, S. Dangtip, more

Radiation Measurements > 2010 > 45 > 10 > 1134-1138

Double-differential cross sections of inclusive light-ion (p, d, t, ³ He and α) production in carbon induced by 96 MeV neutrons have been measured at eight laboratory angles from 20° to 160° in steps of 20°. Experimental techniques, as well as procedures for data taking and data reduction, are presented. Deduced energy-differential and production cross sections are herewith reported. Experimental...

article

Measurement of the nucleon structure function F2 in the nuclear medium and evaluation of its moments

M. Osipenko, G. Ricco, S. Simula, M. Ripani, more

Nuclear Physics, Section A > 2010 > 845 > 1-4 > 1-32

We report on the measurement of inclusive electron scattering off a carbon target performed with CLAS at Jefferson Laboratory. A combination of three different beam energies 1.161, 2.261 and 4.461 GeV allowed us to reach an invariant mass of the final-state hadronic system W≈2.4 GeV with four-momentum transfers Q2 ranging from 0.2 to 5(GeV/c)2. These data, together with previous measurements of the...

article

Differential cross section of γn→K+Σ− on bound neutrons with incident photons from 1.1 to 3.6 GeV

S. Anefalos Pereira, M. Mirazita, P. Rossi, E. De Sanctis, more

Physics Letters B > 2010 > 688 > 4-5 > 289-293

Differential cross sections of the reaction γd→K+Σ−(p) have been measured with the CLAS detector at Jefferson Lab using incident photons with energies between 1.1 and 3.6 GeV. This is the first complete set of strangeness photoproduction data on the neutron covering a broad angular range. At energies close to threshold and up to Eγ∼1.8 GeV, the shape of the angular distribution is suggestive of the...

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Keywords

NUCLEON STRUCTURE (4)
POLARIZATION OBSERVABLE (3)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 29.40.MC (3)
BARYON SPECTROSCOPY (2)
ETA PHOTOPRODUCTION (2)
MESON PHOTOPRODUCTION (2)
NEUTRON DETECTION (2)
PARTICLE IDENTIFICATION (2)
POLARIZATION OBSERVABLES (2)
SPIN STRUCTURE FUNCTIONS (2)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 29.25.DZ (2)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 29.30.HS (2)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 29.40.WK (2)
ACTIVE CONVERTER (1)
AEROGEL (1)
ANGULAR DISTRIBUTION (1)
BEAM ASYMMETRY (1)
CALIBRATION (1)
CARBON (1)
CHARGED PARTICLE SPECTROMETER ARRAY (1)
CHERENKOV RADIATION (1)
CHIRAL PERTURBATION THEORY (1)
CHIRAL-ODD GENERALIZED PARTON DISTRIBUTIONS (1)
CLAS COLLABORATION (1)
CNI (1)
CROSS SECTION (1)
CSI(NA) HODOSCOPE (1)
DEEP INELASTIC SCATTERING (1)
DEEPLY VIRTUAL MESON PRODUCTION (1)
DEUTERON (1)
DIFFUSIVE REFLECTORS (1)
DIRC (1)
DOUBLE-SIDED SILICON STRIP DETECTORS (1)
DRIFT CHAMBER (1)
EIC (1)
ELASTIC SCATTERING (1)
ELECTRON-ION COLLIDER (1)
ETA-PRIME PHOTOPRODUCTION (1)
FRESNEL LENS (1)
FROST EXPERIMENT (1)
HADRON PRODUCTION (1)
HADRONIZATION (1)
HELICITY ASYMMETRY (1)
HIGHER TWISTS (1)
HYPERON (1)
KERMA COEFFICIENT (1)
LIGHT YIELD (1)
LIQUID SCINTILLATOR (1)
LONGITUDINALLY POLARIZED TARGET (1)
MISSING RESONANCES (1)
MOMENTS (1)
NEAR THRESHOLD (1)
NEUTRON BEAM (1)
NEUTRON SCATTERING (1)
NEUTRON-INDUCED REACTIONS (1)
NEUTRON–DEUTERON SCATTERING (1)
NUCLEAR MODIFICATIONS (1)
NUCLEAR REACTIONS (1)
NUCLEI (1)
NUCLEON RESONANCE (1)
OMEGA PHOTOPRODUCTION (1)
OPE (1)
PHOTON BEAM ASYMMETRY (1)
PHOTOPRODUCTION (1)
PION PHOTOPRODUCTION (1)
POLARIZED ANTIPROTON (1)
QCD (1)
QUARKS (1)
QUASI FREE (1)
RING IMAGING CHERENKOV (1)
SILICA AEROGEL (1)
STRANGENESS (1)
TAGGED NEUTRON SOURCE (1)
THREE-NUCLEON FORCES (1)
THRESHOLD CHERENKOV DETECTOR (1)
TIME-OF-FLIGHT METHOD (1)
TRACK RECONSTRUCTION (1)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 25.40.-H (1)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 25.40.DN (1)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 28.20.CZ (1)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 29.30.-H (1)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 29.30.EP (1)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 29.40.CS (1)
[PHYSICAL ASTRONOMY CLASSIFICATION SCHEME] 29.40.GX (1)
Φ MESON PHOTOPRODUCTION (1)
more

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Elsevier (26)
Springer (6)

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Search results for: P. Nadel-Turonski

Search for polarized antiproton production

Design and R&D of RICH detectors for EIC experiments

Modular focusing ring imaging Cherenkov detector for electron–ion collider experiments

Photon beam asymmetry Σ in the reaction γ→p→pω for Eγ=1.152 to 1.876 GeV

Differential cross sections and polarization observables from CLAS K⁎ photoproduction and the search for new N⁎ states

Photon beam asymmetry Σ for η and η′ photoproduction from the proton

Target and double spin asymmetries of deeply virtual π0 production with a longitudinally polarized proton target and CLAS

The Aerogel Čerenkov detector for the SHMS magnetic spectrometer in Hall C at Jefferson Lab

Electron-Ion Collider: The next QCD frontier

First measurement of the helicity asymmetry E in η photoproduction on the proton

First measurement of the polarization observable E in the p→(γ→,π+)n reaction up to 2.25 GeV

Measurement of transparency ratios for protons from short-range correlated pairs

Deep exclusive π⁺ electroproduction off the proton at CLAS

Evidence for the onset of color transparency in ρ0 electroproduction off nuclei

Measurement of the nuclear multiplicity ratio for Ks0 hadronization at CLAS

Precise measurements of beam spin asymmetries in semi-inclusive π0 production

Near-threshold photoproduction of ϕ mesons from deuterium

Double-differential cross sections and kerma coefficients for light-charged particles produced by 96 MeV neutrons on carbon

Measurement of the nucleon structure function F2 in the nuclear medium and evaluation of its moments

Differential cross section of γn→K+Σ− on bound neutrons with incident photons from 1.1 to 3.6 GeV

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