V. Amaral

Publication List Details

Period

1988 - 2009

Number

65

Co-Authors

, M.Dobson 4, R.Jones 4, A.Kazarov 4,9, S.Kolos 4,9 (2009)

V. Amaral, M. Mineev

9) On leave from 8. The Online Book-keeper (OBK) was developed to keep track of past data taking activity, as well as providing the hardware and software conditions during physics data taking to the...

K*0 and φ meson production in proton–nucleus interactions at Ös=41.6\textGeV (2007)

Abt, I., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

The inclusive production cross sections of the strange vector mesons K*0, K̄*0, and φ have been measured in interactions of 920 GeV protons with C, Ti, and W targets with the HERA-B detector at the...

Polarization of Λ and Λ overbar in 920 GeV fixed-target proton–nucleus collisions (2006)

Abt, I., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

A measurement of the polarization of Λ and baryons produced in pC and pW collisions at has been performed with the HERA-B spectrometer. The measurements cover the kinematic range of 0.6 GeV/c

Measurement of the J/ψ production cross section in 920 GeV/c fixed-target proton–nucleus interactions. (2006)

Abt, I., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

The mid-rapidity (dσpN/dy at y=0) and total (σpN) production cross sections of Jψ mesons are measured in proton–nucleus interactions. Data collected by the HERA-B experiment in interactions of...

Measurement of the Υ production cross section in 920 GeV fixed-target proton–nucleus collisions (2006)

Abt, I., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

The cross section ratio RJ/ψ=Br(Υ→l+l−)dσ(Υ)/dy|y=0/σ(J/ψ) has been measured with the HERA-B spectrometer in fixed-target proton–nucleus collisions at 920 GeV proton beam energy...

Improved measurement of the b[overline b] production cross section in 920 GeV fixed-target proton-nucleus collisionsnd in 920 GeV fixed-target proton–nucleus collisions (2006)

Abt, I., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

A new measurement of the b[overline b] production cross section in 920 GeV proton-nucleus collisions is presented by the HERA-B Collaboration. The b[overline b] production is tagged via inclusive...

A Measurement of the ψ′ to J/ψ production ratio in 920 GeV proton-nucleus interactions (2006)

Abt, I., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

Ratios of the ψ′ over the J/ψ production cross sections in the dilepton channel for C, Ti and W targets have been measured in 920 GeV proton-nucleus interactions with the HERA-B detector at the...

Limits for the central production of Θ+ and Ξ-- pentaquarks in 920 GeV pA collsions (2004)

Abt,I., Adams,M., Albrecht,H., Amaral,V., Amorim,A., Aplin,S. J., ...

We have searched for Theta^+(1540) and Xi^{--}(1862) pentaquark candidates in proton-induced reactions on C, Ti and W targets at mid-rapidity and \sqrt{s} = 41.6 GeV. In 2x10^8 inelastic events we...

Search for the Flavor-Changing Neutral Current Decay D0->μ+μ- with the HERA-B Detector (2004)

Abt,I., Adams,M., Albrecht,H., Amaral,V., Amorim,A., Aplin,S. J., ...

We report on a search for the flavor-changing neutral current decay $D^0 \to \mu^+\mu^-$ using $50 \times 10^6$ events recorded with a dimuon trigger in interactions of 920 GeV protons with nuclei by...

Limits for the central production of Θ+ and Ξ-- pentaquarks in 920 GeV pA collsions (2004)

Abt, I., Adams, M., Albrecht, H., Amaral, V., Amorim, A., Aplin, S. J., ...

We have searched for Theta^+(1540) and Xi^{--}(1862) pentaquark candidates in proton-induced reactions on C, Ti and W targets at mid-rapidity and \sqrt{s} = 41.6 GeV. In 2x10^8 inelastic events we...

Search for the Flavor-Changing Neutral Current Decay D0->μ+μ- with the HERA-B Detector (2004)

Abt, I., Adams, M., Albrecht, H., Amaral, V., Amorim, A., Aplin, S. J., ...

We report on a search for the flavor-changing neutral current decay $D^0 \to \mu^+\mu^-$ using $50 \times 10^6$ events recorded with a dimuon trigger in interactions of 920 GeV protons with nuclei by...

Search for the flavor-changing neutral current decay D0→μ0+μ- with the HERA-B detector (2004)

Abt, I., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

We report on a search for the flavor-changing neutral current decay D0→μ+μ- using 50×106 events recorded with a dimuon trigger in interactions of 920 GeV protons with nuclei by the HERA-B...

Measurement of the b(b)over-bar production cross section in 920 GeV fixed-target proton-nucleus collisions (2003)

Abt,I., Abyzov,A., Adams,M., Albrecht,H., Amaral,V., Amorim,A., ...

Using the HERA-B detector, the b (b) over bar production cross section has been measured in 920 GeV proton collisions on carbon and titanium targets. The b (b) over bar production was tagged via...

Inclusive V 0 production cross sections from 920 GeV fixed target proton-nucleus collisions (2003)

Abt,I., Abyzov,A., Adams,M., Albrecht,H., Amaral,V., Amorim,A., ...

Inclusive differential cross sections dσpA/dxF and dσpA/dp2t for the production of K0S, Λ, and Λ particles are measured at HERA in proton-induced reactions on C, Al, Ti, and W targets. The...

Measurement of the b(b)over-bar production cross section in 920 GeV fixed-target proton-nucleus collisions (2003)

Abt,I., Abyzov,A., Adams,M., Albrecht,H., Amaral,V., Amorim,A., ...

Using the HERA-B detector, the b (b) over bar production cross section has been measured in 920 GeV proton collisions on carbon and titanium targets. The b (b) over bar production was tagged via...

J/ψ production via χc decays in 920 GeV pA interactions (2003)

Abt,I., Abyzov,A., Adams,M., Albrecht,H., Amaral,V., Amorim,A., ...

Using data collected by the HERA-B experiment, we have measured the fraction of J/ψ’s produced via radiative χc decays in interactions of 920 GeV protons with carbon and titanium targets. We...

Measurement of the b(b)over-bar production cross section in 920 GeV fixed-target proton-nucleus collisions (2003)

Abt, I., Abyzov, A., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

Using the HERA-B detector, the b (b) over bar production cross section has been measured in 920 GeV proton collisions on carbon and titanium targets. The b (b) over bar production was tagged via...

Inclusive V 0 production cross sections from 920 GeV fixed target proton-nucleus collisions (2003)

Abt, I., Abyzov, A., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

Inclusive differential cross sections dσpA/dxF and dσpA/dp2t for the production of K0S, Λ, and Λ particles are measured at HERA in proton-induced reactions on C, Al, Ti, and W targets. The...

J/ψ production via χc decays in 920 GeV pA interactions (2003)

Abt, I., Abyzov, A., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

Using data collected by the HERA-B experiment, we have measured the fraction of J/ψ’s produced via radiative χc decays in interactions of 920 GeV protons with carbon and titanium targets. We...

Measurement of the b(b)over-bar production cross section in 920 GeV fixed-target proton-nucleus collisions (2003)

Abt, I., Abyzov, A., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

Using the HERA-B detector, the b (b) over bar production cross section has been measured in 920 GeV proton collisions on carbon and titanium targets. The b (b) over bar production was tagged via...

J/ψ production via χc decays in 920 GeV pA interactions (2003)

Abt, I., Adams, M., Albrecht, H., Amaral, V., Amorim, A., ...

Using data collected by the HERA-B experiment, we have measured the fraction of J/ψ's produced via radiative χc decays in interactions of 920 GeV protons with carbon and titanium targets. We...

Electron-gamma perturbed angular correlation studies on high-T-C superconductors (2000)

Correia, JG, Araujo, JP, Marques, JG, Ramos, AR, Lourenco, AA, Amaral, V, ...

Recent results on the study of high-T-C superconductors using the e(-)-gamma perturbed angular correlation technique are presented. The basic features of the experimental equipment and its...

Electron-gamma perturbed angular correlation studies on high-T-C superconductors (2000)

Correia, JG, Araujo, JP, Marques, JG, Ramos, AR, Lourenco, AA, Amaral, V, ...

Recent results on the study of high-T-C superconductors using the e(-)-gamma perturbed angular correlation technique are presented. The basic features of the experimental equipment and its...

High field magnetization of two types of shortly correlated systems : random anisotroy systems and nanoparticles (1992)

Barabara, B., Filippi, J., Marchand, A., Mollard, P., Amaral, V., Devaux, X., ...

The magnetization curves of two types of systems (random anisotropy amorphous alloys and ferromagnetic nanoparticles) having finite correlation lengths have been measured and analysed in a wide range...

High field magnetization of two types of shortly correlated systems : random anisotroy systems and nanoparticles (1992)

Barabara, B., Filippi, J., Marchand, A., Mollard, P., Amaral, V., Devaux, X., ...

The magnetization curves of two types of systems (random anisotropy amorphous alloys and ferromagnetic nanoparticles) having finite correlation lengths have been measured and analysed in a wide range...

High field magnetization of two types of shortly correlated systems : random anisotroy systems and nanoparticles (1992)

Barabara, B., Filippi, J., Marchand, A., Mollard, P., Amaral, V., Devaux, X., ...

The magnetization curves of two types of systems (random anisotropy amorphous alloys and ferromagnetic nanoparticles) having finite correlation lengths have been measured and analysed in a wide range...

FIRST-ORDER ANTIFERROMAGNETIC TRANSITION IN CUBIC TbAg (1988)

Morin, P., Rouchy, J., Amado, M., Pinto, R., Moreira, J., Amaral, V., ...

Experimental results from magnetization, D.T.A. and transport properties give, for the first time, clear evidence on the first-order nature of the antiferromagnetic transition in cubic TbAg single...

MAGNETORESISTANCE OF AMORPHOUS ISING SPIN GLASSES : a - (DyxGd1-x) Ni. COEXISTENCE OF MAGNETISM AND WEAK LOCALIZATION (1988)

Amaral, V., Moreira, J., Sousa, J., Barbara, B., Filippi, J., Dieny, B.

Magnetoresistivity measurements Ɗρ/ρ have been performed on the random anisotropy system a - (DyxGd1-x)Ni in applied fields 0 < Ha ≤ 10 kOe, 4 < T < 300 K, in samples with x = 1,...

FIRST-ORDER ANTIFERROMAGNETIC TRANSITION IN CUBIC TbAg (1988)

Morin, P., Rouchy, J., Amado, M., Pinto, R., Moreira, J., Amaral, V., ...

Experimental results from magnetization, D.T.A. and transport properties give, for the first time, clear evidence on the first-order nature of the antiferromagnetic transition in cubic TbAg single...

MAGNETORESISTANCE OF AMORPHOUS ISING SPIN GLASSES : a - (DyxGd1-x) Ni. COEXISTENCE OF MAGNETISM AND WEAK LOCALIZATION (1988)

Amaral, V., Moreira, J., Sousa, J., Barbara, B., Filippi, J., Dieny, B.

Magnetoresistivity measurements Ɗρ/ρ have been performed on the random anisotropy system a - (DyxGd1-x)Ni in applied fields 0 < Ha ≤ 10 kOe, 4 < T < 300 K, in samples with x = 1,...

FIRST-ORDER ANTIFERROMAGNETIC TRANSITION IN CUBIC TbAg (1988)

Morin, P., Rouchy, J., Amado, M., Pinto, R., Moreira, J., Amaral, V., ...

Experimental results from magnetization, D.T.A. and transport properties give, for the first time, clear evidence on the first-order nature of the antiferromagnetic transition in cubic TbAg single...

MAGNETORESISTANCE OF AMORPHOUS ISING SPIN GLASSES : a - (DyxGd1-x) Ni. COEXISTENCE OF MAGNETISM AND WEAK LOCALIZATION (1988)

Amaral, V., Moreira, J., Sousa, J., Barbara, B., Filippi, J., Dieny, B.

Magnetoresistivity measurements Ɗρ/ρ have been performed on the random anisotropy system a - (DyxGd1-x)Ni in applied fields 0 < Ha ≤ 10 kOe, 4 < T < 300 K, in samples with x = 1,...