3He Spin-Dependent Cross Sections and Sum Rules (2008)
Amarian, M., Auerbach, L., Averett, T., Berthot, J., Bertin, P., ...
We present a measurement of the spin-dependent cross sections for the \vec{^3He}(\vec{e},e')X} reaction in the quasielastic and resonance regions at four-momentum transfer 0.1 < Q^2< 0.9 GeV^2. The...
Doria, L., Achenbach, P., Gayoso, C. Ayerbe, Baumann, D., Bernauer, J. C., ...
The cross section of the $ep \to e' p' \gamma$ reaction has been measured at $Q^2 = 0.33$ (GeV/c)$^2$. The experiment was performed using the electron beam of the MAMI accelerator and the standard...
Direct Measurement of the Gluon Polarisation in the Nucleon via Charmed Meson Production (2008)
Alekseev, M, Alexakhin, V Yu, Alexandrov, Yu, Alexeev, G D, Amoroso, A, Arbuzov, A, ...
We present the first measurement of the gluon polarisation in the nucleon based on the photon-gluon fusion process tagged by charmed meson production and decay to charged K and pi. The data were...
Direct Measurement of the Gluon Polarisation in the Nucleon via Charmed Meson Production (2008)
Alekseev, M, Alexandrov, Yu, Alexeev, G D, Amoroso, A, Arbuzov, A, Badelek, B, ...
We present the first measurement of the gluon polarisation in the nucleon based on the photon-gluon fusion process tagged by charmed meson production and decay to charged K and pi. The data were...
Collins and Sivers Transverse Spin Asymmetries for Pions and Kaons on Deuterons (2008)
Aleeksev, M, Alexakhin, V Yu, Alexandrov, Yu, Alexeev, G D, Amoroso, A, Arbuzov, A, ...
The measurements of the Collins and Sivers asymmetries of identified hadrons produced in deep-inelastic scattering of 160 GeV/c muons on a transversely polarised 6LiD target at COMPASS are presented....
Collins and Sivers Transverse Spin Asymmetries for Pions and Kaons on Deuterons (2008)
Aleeksev, M, Alexakhin, V Yu, Alexandrov, Yu, Alexeev, G D, Amoroso, A, Arbuzov, A, ...
The measurements of the Collins and Sivers asymmetries of identified hadrons produced in deep-inelastic scattering of 160 GeV/c muons on a transversely polarised 6LiD target at COMPASS are presented....
Alexa, L.C., Anderson, B.D., Aniol, K.A., Arundell, K., Auerbach, L., Baker, F.T., ...
The deuteron elastic structure function A(Q^2) has been extracted in the Q^2 range 0.7 to 6.0 (GeV/c)^2 from cross section measurements of elastic electron-deuteron scattering in coincidence using...
Alexa, L.C., Anderson, B.D., Aniol, K.A., Arundell, K., Auerbach, L., Baker, F.T., ...
The deuteron elastic structure function A(Q^2) has been extracted in the Q^2 range 0.7 to 6.0 (GeV/c)^2 from cross section measurements of elastic electron-deuteron scattering in coincidence using...
Alexa, L.C., Anderson, B.D., Aniol, K.A., Arundell, K., Auerbach, L., Baker, F.T., ...
The deuteron elastic structure function A(Q^2) has been extracted in the Q^2 range 0.7 to 6.0 (GeV/c)^2 from cross section measurements of elastic electron-deuteron scattering in coincidence using...
The Polarised Valence Quark Distribution from semi-inclusive DIS (2007)
Alekseev, M, Alexakhin, V Yu, Alexandrov, Yu, Alexeev, G D, Amoroso, A, Arbuzov, A, ...
The semi-inclusive difference asymmetry A^{h+ - h-} for hadrons of opposite charge has been measured by the COMPASS experiment at CERN. The data were collected in the years 2002-2004 using a 160 GeV...
Double spin asymmetry in exclusive $\rho^0$ muoproduction at COMPASS (2007)
Alexakhin, V Yu, Alekseev, M, Alexandrov, Yu A, Alexeev, G D, Amoroso, A, Arbuzov, A, ...
The longitudinal double spin asymmetry A_1^rho for exclusive leptoproduction of rho^0 mesons, mu + N -> mu + N + rho, is studied using the COMPASS 2002 and 2003 data. The measured reaction is...
The COMPASS Experiment at CERN (2007)
Abbon, P, Albrecht, E, Alexakhin, V Yu, Alexandrov, Yu, Alexeev, G D, Alekseev, M G, ...
The COMPASS experiment makes use of the CERN SPS high-intensitymuon and hadron beams for the investigation of the nucleon spin structure and the spectroscopy of hadrons. One or more outgoing...
Ageev, E S, Alexakhin, V Yu, Alexandrov, Y, Alexeev, G D, Amoroso, A, Badelek, B, ...
We present a precise measurement of the deuteron longitudinal spin asymmetry $A_1^d$ and of the deuteron spin-dependent structure function $g_1^d$ at $Q^2 < $ 1~(GeV/$c$)$^2$ and $4\cdot$10$^{-5} < x...
Bensafa, I. K., Achenbach, P., Ases Antelo, M., Ayerbe, C., Baumann, D., Böhm, R., ...
The beam-helicity asymmetry has been measured simultaneously for the reactions (e p \to e p \gamma) and (e p \to e p \pi^0) in the $\Delta (1232)$ resonance region at $Q^2=$ 0.35 (GeV/c)$^2$. The...
Bensafa, I. K., Achenbach, P., Antelo, M. Ases, Ayerbe, C., Baumann, D., ...
The beam-helicity asymmetry has been measured simultaneously for the reactions (e p \to e p \gamma) and (e p \to e p \pi^0) in the $\Delta (1232)$ resonance region at $Q^2=$ 0.35 (GeV/c)$^2$. The...
Ageev, E S, Alexakhin, V Yu, Alexandrov, Yu A, Alexeev, G D, Alexeev, M, Amoroso, A, ...
New high precision measurements of the Collins and Sivers asymmetries of charged hadrons produced in deep-inelastic scattering of muons on a transversely polarised 6LiD target are presented. The data...
The Deuteron Spin-dependent Structure Function $g^{d}_1$ and its First Moment (2006)
Alexakhin, V Yu, Alexandrov, Yu A, Alexeev, G D, Alexeev, M, Amoroso, A, Badeek, B, ...
We present a measurement of the deuteron spin-dependent structure function g^d_1 based on the data collected by the COMPASS experiment at CERN during the years 2002-2004. The data provide an accurate...
Next-to-leading order QCD analysis of polarized deep inelastic scattering data (2006)
Abe, K., Akagi, T., Anderson, B.D., Anthony, P.L., Arnold, R.G., Averett, T., ...
Precision determination of the neutron spin structure function $g^{n}_{1}$ (2006)
Abe, K., Akagi, T., Anderson, B.D., Anthony, P.L., Arnold, R.G., Averett, T., ...
Measurement of the neutron spin structure function $g_{2}^{n}$ and asymmetry $a_{2}^{n}$ (2006)
Abe, K., Akagi, T., Anderson, B.D., Anthony, P.L., Arnold, R.G., Averett, T., ...
Roche, J., Friedrich, J.M., Lhuillier, D., Bartsch, P., Baumann, D., Berthot, J., ...
Absolute differential cross sections for the reaction (e+p -> e+p+gamma) have been measured at a four-momentum transfer with virtuality Q^2=0.33 GeV^2 and polarization \\epsilon = 0.62 in the range...
Laveissiere, G., Degrande, N., Jaminion, S., Jutier, C., Todor, L., Di Salvo, R., ...
Exclusive electroproduction of pi0 mesons on protons in the backward hemisphere has been studied at Q2=1.0 GeV2 by detecting protons in the forward direction in coincidence with scattered electrons...
Laveissiere, G., Degrande, N., Jaminion, S., Jutier, C., Todor, L., Di Salvo, R., ...
Exclusive electroproduction of pi0 mesons on protons in the backward hemisphere has been studied at Q2=1.0 GeV2 by detecting protons in the forward direction in coincidence with scattered electrons...
Laveissiere, G., Degrande, N., Jaminion, S., Jutier, C., Todor, L., Di Salvo, R., ...
Exclusive electroproduction of pi0 mesons on protons in the backward hemisphere has been studied at Q2=1.0 GeV2 by detecting protons in the forward direction in coincidence with scattered electrons...
Gluon polarization in the nucleon from quasi-real photoproduction of high-pT hadron pairs (2005)
Ageev, E S, Alexakhin, V Yu, Alexandrov, Yu A, Alexeev, G D, Amoroso, A, Badelek, B, ...
We present a determination of the gluon polarization Delta G/G in the nucleon, based on the helicity asymmetry of quasi-real photoproduction events, Q^2
Laveissiere, G., Degrande, N., Jaminion, S., Jutier, C., Todor, L., Di Salvo, R., ...
We have made the first measurements of the virtual Compton scattering process via the e p -> e p gamma exclusive reaction at Q**2 = 1 GeV**2 in the nucleon resonance region. The cross section is...
Measurement of the generalized forward spin polarizabilities of the neutron (2005)
Amarian, M., Auerbach, L., Averett, T., Berthot, J., Bertin, P., Bertozzi, B., ...
Laveissiere, G., Todor, L., Degrande, N., Jaminion, S., Jutier, C., Di Salvo, R., ...
We report a Virtual Compton Scattering study of the proton in Hall A at the Thomas Jefferson National Accelerator Facility at low CM energies. We have determined the structure functions...
Search for the $\phi (1860)$ Pentaquark at COMPASS (2005)
Ageev, E S, Alexakhin, V Yu, Alexandrov, Yu A, Alexeev, G D, Amoroso, A, Badeek, B, ...
Narrow Xi-pi+- and Xi-bar+pi+- resonances produced by quasi-real photons have been searched for by the COMPASS experiment at CERN. The study was stimulated by the recent observation of an exotic...
Search for the $\phi (1860)$ Pentaquark at COMPASS (2005)
Ageev, E S, Alexakhin, V Yu, Alexandrov, Yu A, Alexeev, G D, Amoroso, A, Badeek, B, ...
Narrow Xi-pi+- and Xi-bar+pi+- resonances produced by quasi-real photons have been searched for by the COMPASS experiment at CERN. The study was stimulated by the recent observation of an exotic...
Alexakhin, V Yu, Alexandrov, Yu A, Alexeev, G D, Amoroso, A, Badeek, B, Balestra, F, ...
First measurements of the Collins and Sivers asymmetries of charged hadrons produced in deep-inelastic scattering of muons on a transversely polarized 6-LiD target are presented. The data were taken...
Alexakhin, V Yu, Alexandrov, Yu A, Alexeev, G D, Amoroso, A, Badeek, B, Balestra, F, ...
First measurements of the Collins and Sivers asymmetries of charged hadrons produced in deep-inelastic scattering of muons on a transversely polarized 6-LiD target are presented. The data were taken...
Measurement of the Spin Structure of the Deuteron in the DIS Region (2005)
Ageev, E S, Alexakhin, V Yu, Alexandrov, Yu A, Alexeev, G D, Amoroso, A, Badeek, B, ...
We present a new measurement of the longitudinal spin asymmetry A_1^d and the spin-dependent structure function g_1^d of the deuteron in the range 1 GeV^2 < Q^2 < 100 GeV^2 and 0.004< x
Measurement of the Spin Structure of the Deuteron in the DIS Region (2005)
Ageev, E S, Alexakhin, V Yu, Alexandrov, Yu A, Alexeev, G D, Amoroso, A, Badeek, B, ...
We present a new measurement of the longitudinal spin asymmetry A_1^d and the spin-dependent structure function g_1^d of the deuteron in the range 1 GeV^2 < Q^2 < 100 GeV^2 and 0.004< x
$Q^2$ evolution of the neutron spin structure moments using a $^3He$ target (2004)
Amarian, M., Auerbach, L., Averett, T., Berthot, J., Bertin, P., Bertozzi, B., ...
Laveissiere, G., Todor, L., Degrande, N., Jaminion, S., Jutier, C., Di Salvo, R., ...
We report a Virtual Compton Scattering study of the proton in Hall A at the Thomas Jefferson National Accelerator Facility at low CM energies. We have determined the structure functions...
Measurement of the generalized forward spin polarizabilities of the neutron (2004)
Amarian, M., Auerbach, L., Averett, T., Berthot, J., Bertin, P., Bertozzi, B., ...
Laveissiere, G., Degrande, N., Jaminion, S., Jutier, C., Todor, L., Di Salvo, R., ...
We have made the first measurements of the virtual Compton scattering process via the e p -> e p gamma exclusive reaction at Q**2 = 1 GeV**2 in the nucleon resonance region. The cross section is...
Basic instrumentation for Hall A at Jefferson Lab (2004)
Alcorn, J., Anderson, B.D., Aniol, K.A., Annand, J.R.M., Auerbach, L., Arrington, J., ...
$Q^2$ evolution of the neutron spin structure moments using a $^3He$ target (2004)
Amarian, M., Auerbach, L., Averett, T., Berthot, J., Bertin, P., Bertozzi, B., ...
Laveissiere, G., Todor, L., Degrande, N., Jaminion, S., Jutier, C., Di Salvo, R., ...
We report a Virtual Compton Scattering study of the proton in Hall A at the Thomas Jefferson National Accelerator Facility at low CM energies. We have determined the structure functions...
Measurement of the generalized forward spin polarizabilities of the neutron (2004)
Amarian, M., Auerbach, L., Averett, T., Berthot, J., Bertin, P., Bertozzi, B., ...
Laveissiere, G., Degrande, N., Jaminion, S., Jutier, C., Todor, L., Di Salvo, R., ...
We have made the first measurements of the virtual Compton scattering process via the e p -> e p gamma exclusive reaction at Q**2 = 1 GeV**2 in the nucleon resonance region. The cross section is...
Basic instrumentation for Hall A at Jefferson Lab (2004)
Alcorn, J., Anderson, B.D., Aniol, K.A., Annand, J.R.M., Auerbach, L., Arrington, J., ...
$Q^2$ evolution of the neutron spin structure moments using a $^3He$ target (2004)
Amarian, M., Auerbach, L., Averett, T., Berthot, J., Bertin, P., Bertozzi, B., ...
Possible measurements of GPDs at COMPASS (2002)
D'Hose, N, Burtin, E, Guichon, P A M, Marroncle, J, Moinester, M A, Pochodzalla, J, ...
This paper presents the reactions which can be performed at COMPASS to study the Generalized Parton Distributions (GPDs). The high energy muon beam at CERN allows to measure Hard Exclusive Meson...
Possible measurements of GPDs at COMPASS (2002)
D'Hose, N., Burtin, E., Guichon, P. A. M., Marroncle, J., Moinester, M., Pochodzalla, J., ...
This paper presents the reactions which can be performed at COMPASS to study the Generalized Parton Distributions (GPDs). The high energy muon beam at CERN allows to measure Hard Exclusive Meson...
Anthony, P.L., Arnold, R.G., Averett, T., Band, H.R., Berisso, M.C., Borel, H., ...
he structure functions g1p and g1n have been measured over the range 0.014 < x < 0.9 and 1 < Q2 < 40 GeV2 using deep-inelastic scattering of 48 GeV longitudinally polarized electrons from polarized...
Anthony, P.L., Arnold, R.G., Averett, T., Band, H.R., Berisso, M.C., Borel, H., ...
he structure functions g1p and g1n have been measured over the range 0.014 < x < 0.9 and 1 < Q2 < 40 GeV2 using deep-inelastic scattering of 48 GeV longitudinally polarized electrons from polarized...
Anthony, P.L., Arnold, R.G., Averett, T., Band, H.R., Berisso, M.C., Borel, H., ...
he structure functions g1p and g1n have been measured over the range 0.014 < x < 0.9 and 1 < Q2 < 40 GeV2 using deep-inelastic scattering of 48 GeV longitudinally polarized electrons from polarized...