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1. Polarised quark distributions in the nucleon from semi-inclusive spin asymmetries

Author

F. Tessarotto, F. Perrot-Kunne, W. Kröger, E. Burtin, K. Zaremba, Jay Roberts, J. Cranshaw, T. Matsuda, M. Plo, I. Sabo, M. Grosse Perdekamp, A. Karev, K. Haft, V. G. Krivokhijine, S. K. Dhawan, J. Lichtenstadt, S. Platchkov, N. de Botton, Victor Kukhtin, H. Gilly, M. Lamanna, J. H. Moromisato, Clemens A. Heusch, J. S. McCarthy, G. Igo, A. Steinmetz, Patrick Hautle, S. Bültmann, R. Birsa, F. Feinstein, D. von Harrach, J. E.J. Oberski, Takahiro Iwata, A. Ogawa, A. Schiller, D. Thers, Yu. Kisselev, G. Reicherz, D. Crabb, J. A. Garzon, C. Dulya, Naoaki Horikawa, Franco Bradamante, T. Akdogan, B. Roscherr, S. Dalla Torre, H. J. Kessler, G. Bardin, L. Betev, Roland Windmolders, J. Martino, Abhay Deshpande, C. S. Özben, M. Velasco, A. Arvidson, Rudiger Voss, J. Nassalski, M. Giorgi, U. Stiegler, T. Hasegawa, I.A. Savin, D. J. Miller, P. Schiavon, Andrea Bressan, Michal Szleper, A. Gallas, G. K. Mallot, J. Vogt, E. Arik, B. W. Mayes, T. O. Niinikoski, S. Ishimoto, Lawrence Pinsky, A. Witzmann, Y. Miyachi, St. Goertz, F. Lehar, G. Unel, B. Frois, H. Postma, R. van Dantzig, Matias Rodriguez, E. P. Sichtermann, F. Simeoni, G.I. Smirnov, J. Saborido, R. Puntaferro, D. Fasching, G. van Middelkoop, Jinkui Zhao, D. Pose, W. Meyer, Kunikazu Mori, C. A. Whitten, J. Kyynäräinen, A. de Lesquen, J. Pretz, K. Medved, Regine Willumeit, H. Pereira, W. Tlaczala, A. Tripet, G. Gracia, A. Sandacz, N. De Groot, K. Kurek, Anna Zanetti, F. Marie, T. Kageya, A. Rijllart, Bernardo Adeva, E. Rondio, T. Çuhadar, J. M. Le Goff, Heinrich B. Stuhrmann, A. Magnon, J. Ylöstalo, L. Naumann, M. Litmaath, Günter Baum, P. Berglund, B. Derro, E. von Goeler, D. Krämer, W. Wislicki, G. Rädel, S. Eichblatt, Alan D. Martin, B. Badelek, C. Fernandez, N. Hayashi, D. Peshekhonov, A. Bravar, V. W. Hughes, Ulrich Landgraf, A. Staude, T. J. Ketel, S. Forthmann, J. Kiryluk, E. M. Kabuß, (Astro)-Particles Physics, B., Adeva, T., Akdogan, E., Arik, A., Arvidson, B., Badelek, G., Bardin, G., Baum, P., Berglund, L., Betev, R., Birsa, N., de Botton, Bradamante, Franco, A., Bravar, Bressan, Andrea, S., Bültmann, E., Burtin, D., Crabb, J., Cranshaw, T., Çuhadar, DALLA TORRE, Silvia, R., van Dantzig, B., Derro, A., Deshpande, S., Dhawan, C., Dulya, S., Eichblatt, D., Fasching, F., Feinstein, C., Fernandez, S., Forthmann, B., Froi, A., Galla, J. A., Garzon, H., Gilly, Giorgi, Marcello, E., von Goeler, S., Goertz, G., Gracia, N., de Groot, M., Grosse Perdekamp, K., Haft, D., von Harrach, T., Hasegawa, P., Hautle, N., Hayashi, C. A., Heusch, N., Horikawa, V. W., Hughe, G., Igo, S., Ishimoto, T., Iwata, E. M., Kabuß, T., Kageya, A., Karev, H. J., Kessler, T. J., Ketel, J., Kiryluk, Kisselev, Y. u., D., Krämer, V., Krivokhijine, W., Kröger, V., Kukhtin, K., Kurek, J., Kyynäräinen, M., Lamanna, U., Landgraf, J. M., Le Goff, F., Lehar, A., de Lesquen, J., Lichtenstadt, M., Litmaath, A., Magnon, G. K., Mallot, F., Marie, Martin, Anna, J., Martino, T., Matsuda, B., Maye, J. S., Mccarthy, K., Medved, W., Meyer, G., van Middelkoop, D., Miller, Y., Miyachi, K., Mori, J., Moromisato, J., Nassalski, L., Naumann, T. O., Niinikoski, J. E. J., Oberski, A., Ogawa, C., Ozben, H., Pereira, F., Perrot Kunne, D., Peshekhonov, L., Pinsky, S., Platchkov, M., Plo, D., Pose, H., Postma, J., Pretz, R., Puntaferro, G., Rädel, A., Rijllart, G., Reicherz, J., Robert, M., Rodriguez, E., Rondio, B., Roscherr, I., Sabo, J., Saborido, A., Sandacz, I., Savin, Schiavon, Paolo, A., Schiller, E. P., Sichtermann, F., Simeoni, G. I., Smirnov, A., Staude, A., Steinmetz, U., Stiegler, H., Stuhrmann, M., Szleper, F., Tessarotto, D., Ther, W., Tlaczala, A., Tripet, G., Unel, M., Velasco, J., Vogt, R., Vo, C., Whitten, R., Windmolder, R., Willumeit, W., Wislicki, A., Witzmann, J., Ylöstalo, Zanetti, ANNA MARIA, K., Zaremba, and J., Zhao

Subjects
Quark, Physics, Nuclear and High Energy Physics, Particle physics, Muon, Valence (chemistry), SMC, Hadron, FOS: Physical sciences, SIDIS, Polarized quark distributions, Deep inelastic scattering, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Deuterium, High Energy Physics::Experiment, Nucleon, Particle Physics - Experiment
Abstract

We present a measurement of semi-inclusive spin asymmetries for positively and negatively charged hadrons from deep inelastic scattering of polarised muons on polarised protons and deuterons in the range $0.003$1 GeV$^2$. Compared to our previous publication on this subject, with the new data the statistical errors have been reduced by nearly a factor of two. From these asymmetries and our inclusive spin asymmetries we determine the polarised quark distributions of valence quarks and non-strange sea quarks at $Q^2$=10 GeV$^2$. The polarised $u$ valence quark distribution, $\Delta u_v(x)$, is positive and the polarisation increases with $x$. The polarised $d$ valence quark distribution, $\Delta d_v(x)$, is negative and the non-strange sea distribution, $\Delta \bar q(x)$, is consistent with zero over the measured range of $x$. We find for the first moments $\int_0^1 \Delta u_v(x) dx = 0.77 \pm 0.10 \pm 0.08$, $\int_0^1 \Delta d_v(x) dx = -0.52 \pm 0.14 \pm 0.09$ and $\int_0^1 \Delta \bar q(x) dx= 0.01 \pm 0.04 \pm 0.03$, where we assumed $\Delta \bar u(x) = \Delta \bar d(x)$. We also determine for the first time the second moments of the valence distributions $\int_0^1 x \Delta q_v(x) dx$., Comment: 17 pages

Published
1998
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2. The spin-dependent structure function g1(x) of the proton from polarized deep-inelastic muon scattering

Author

Michal Szleper, D. Crabb, Heinrich B. Stuhrmann, A. Schiller, Naoaki Horikawa, J. Pretz, A. Rijllart, Bernardo Adeva, T. Kageya, J. Ylöstalo, A. Ogawa, L. Naumann, C. Dulya, I. Sabo, C. A. Whitten, J. Kyynäräinen, A. Tripet, D. Peshekhonov, F. Lehar, V. W. Hughes, G. Gracia, P. Schiavon, A. Sandacz, M. Giorgi, V. G. Krivokhijine, B. Mayes, Rudiger Voss, Yu. Kisselev, S. K. Dhawan, B. Derro, J. S. McCarthy, S. Bültmann, T. O. Niinikoski, Ulrich Landgraf, E. Arik, Alan D. Martin, F. Marie, A. Staude, M. Litmaath, Etienne Burtin, David Miller, Matias Rodriguez, Kunikazu Mori, J. Moromisato, A. Magnon, D. Thers, E. P. Sichtermann, K. Kurek, E. M. Kabuß, E. Rondio, D. Pose, Abhay Deshpande, K. Zaremba, I.A. Savin, T. J. Ketel, M. Plo, F. Feinstein, A. Karev, Matthias Grosse Perdekamp, G. Bardin, A. Witzmann, Patrick Hautle, J. M. Le Goff, G. Igo, J. Kiryluk, Clemens A. Heusch, T. Çuhadar, S. Platchkov, J. Lichtenstadt, R. Birsa, J. A. Garzon, Franco Bradamante, W. Wislicki, A. Steinmetz, P. Berglund, K. Medved, N. De Groot, Anna Zanetti, H. Postma, B. Frois, J. Saborido, W. Tlaczala, B. Roscherr, Lawrence Pinsky, T. Matsuda, S. Ishimoto, U. Stiegler, H. Gilly, G. Unel, F. Simeoni, G.I. Smirnov, R. van Dantzig, R. Puntaferro, J. E.J. Oberski, J. Nassalski, G. van Middelkoop, G. Rädel, W. Meyer, B. Badelek, C. Fernandez, Mayda Velasco, N. Hayashi, L. Betev, F. Perrot-Kunne, S. Eichblatt, A. Bravar, V. Kuktin, J. Cranshaw, D. Fasching, J. Vogt, G. Baum, Takahiro Iwata, G. Reicherz, Roland Windmolders, S. Dalla Torre, A. Arvidson, H. Pereira, A. de Lesquen, St. Goertz, N. de Botton, Andrea Bressan, J. Martino, A. Gallas, G. K. Mallot, Y. Miyachi, M. Lamanna, S. Forthmann, K. Haft, F. Tessarotto, W. Kröger, B., Adeva, E., Arik, A., Arvidson, B., Badelek, G., Bardin, G., Baum, P., Berglund, L., Betev, Birsa, Renato, N., de Botton, Bradamante, Franco, A., Bravar, Bressan, Andrea, S., Bültmann, E., Burtin, D., Crabb, J., Cranshaw, T., Çuhadar, DALLA TORRE, Silvia, R., van Dantzig, B., Derro, A., Deshpande, S., Dhawan, C., Dulya, S., Eichblatt, D., Fasching, F., Feinstein, C., Fernandez, S., Forthmann, B., Froi, A., Galla, J. A., Garzon, H., Gilly, Giorgi, Marcello, S., Goertz, G., Gracia, N., de Groot, K., Haft, D., von Harrach, T., Hasegawa, P., Hautle, N., Hayashi, C. A., Heusch, N., Horikawa, V. W., Hughe, G., Igo, S., Ishimoto, T., Iwata, E. M., Kabuß, T., Kageya, A., Karev, T. J., Ketel, J., Kiryluk, Kisselev, Y. u., V., Krivokhijine, W., Kröger, V., Kuktin, K., Kurek, J., Kyynäräinen, M., Lamanna, U., Landgraf, J. M., Le Goff, F., Lehar, A., de Lesquen, J., Lichtenstadt, M., Litmaath, A., Magnon, G. K., Mallot, F., Marie, Martin, Anna, J., Martino, T., Matsuda, B., Maye, J. S., Mccarthy, K., Medved, W., Meyer, G., van Middelkoop, D., Miller, Y., Miyachi, K., Mori, J., Moromisato, J., Nassalski, L., Naumann, T. O., Niinikoski, J. E. J., Oberski, A., Ogawa, M., Perdekamp, H., Pereira, F., Perrot Kunne, D., Peshekhonov, L., Pinsky, S., Platchkov, M., Plo, D., Pose, H., Postma, J., Pretz, R., Puntaferro, G., Rädel, A., Rijllart, G., Reicherz, M., Rodriguez, E., Rondio, B., Roscherr, I., Sabo, J., Saborido, A., Sandacz, I., Savin, Schiavon, Paolo, A., Schiller, E. P., Sichtermann, F., Simeoni, G. I., Smirnov, A., Staude, A., Steinmetz, U., Stiegler, H., Stuhrmann, M., Szleper, F., Tessarotto, D., Ther, W., Tlaczala, A., Tripet, G., Unel, M., Velasco, J., Vogt, R., Vo, C., Whitten, R., Windmolder, W., Wislicki, A., Witzmann, J., Ylöstalo, Zanetti, ANNA MARIA, K., Zaremba, and (Astro)-Particles Physics

Subjects
Physics, Quantum chromodynamics, DIS, Nuclear and High Energy Physics, Particle physics, Muon, Proton, SMC, Scattering, g1 structure function, Perturbative QCD, Deep inelastic scattering, Nuclear physics, Sum rule in quantum mechanics, Nucleon, Particle Physics - Experiment
Abstract

We present a new measurement of the virtual photon proton asymmetry $A_1^{\rm p}$ from deep inelastic scattering of polarized muons on polarized protons in the kinematic range $0.0008 < x < 0.7$ and $0.2 < Q^{2} < 100$ GeV$^{2}$. With this, the statistical uncertainty of our measurement has improved by a factor of $2$ compared to our previous measurements. The spin-dependent structure function $g_{1}^{\rm p}$ is determined for the data with $Q^{2} > 1$ GeV$^{2}$. A perturbative QCD evolution in next-to-leading order is used to determine $g_1^{\rm p}(x)$ at a constant $Q^2$. At $Q^{2} = 10$ GeV$^{2}$ we find, in the measured range, $\int_{0.003}^{0.7} g_{1}^{\rm p}(x){\rm d}x = 0.139 \pm 0.006~({\rm stat})\pm 0.008~({\rm syst)} \pm 0.006~({\rm evol})$. The value of the first moment $\Gamma_{1}^{\rm p} = \int_{0}^{1} g_{1}^{\rm p}(x){\rm d}x$ of $g_{1}^{\rm p}$ depends on the approach used to describe the behaviour of $g_{1}^{\rm p}$ at low $x$. We find that the Ellis-Jaffe sum rule is violated. With our published result for $\Gamma_{1}^{\rm d}$ we confirm the Bjorken sum rule with an accuracy of $\approx 15\%$ at the one standard deviation level.

Published
1997
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3. The spin-dependent structure function g1(x) of the deuteron from polarized deep-inelastic muon scattering

Author

S. Bültmann, T. Kageya, M. Boutemeur, D. Fasching, T. Pussieux, A. Bressan, J. E.J. Oberski, E. M. Kabuß, E. Burtin, T. Matsuda, D.V. Peshekhonov, K. M. Teichert, I. Sabo, Jay Roberts, I.A. Savin, V. G. Krivokhijine, J. Nassalski, J. Zhao, N. de Botton, Victor Kukhtin, A. Bravar, B. W. Mayes, E. Arik, R. Seitz, G. Gratia, W. Tlaczala, J. Cranshaw, H. J. Kessler, Roland Windmolders, M. Lowe, A. Arvidson, J. Martino, A. Gallas, A. Nagaitsev, G. K. Mallot, M. Lamanna, Y. Ylöstalo, David Miller, Aina Yañez, G. Bardin, Drew Parks, L. Naumann, G. Unel, T. O. Niinikoski, J. Lichtenstadt, J. Kyynäräinen, F. Tessarotto, W. Kröger, H. Postma, J. Kiryluk, J. Saborido, M. Litmaath, L. S. Pinsky, P. Schiavon, N. Horikawa, B. Derro, D. von Harrach, M. K. Ballintijn, D. Krämer, Abhay Deshpande, F. Sever, R. Puntaferro, K. P. Schüler, E. Rondio, J. H. Moromisato, Satish Dhawan, G. Baum, F. Feinstein, T. Iwata, Yannis K. Semertzidis, J. Pyrlik, Mayda Velasco, L. Betev, S. Eichblatt, A. Witzmann, Patrick Hautle, P. Björkholm, T. Hasegawa, S. Dalla Torre, J. C. Faivre, L. Klostermann, J. M. Le Goff, F. Marie, J. S. McCarthy, C. Cavata, Regine Willumeit, Matias Rodriguez, C. Dulya, G. van Middelkoop, A. Ogawa, P. Berglund, B. Frois, S. Platchkov, Roy Weinstein, N. De Groot, J. Vogt, E. von Goeler, P. Shanahan, A. Kishi, A. Rosado, G. Rädel, G. Igo, S. Rock, T. Gaussiran, L. V. Kalinovskaya, Clemens A. Heusch, F. Simeoni, G.I. Smirnov, Ricardo Piegaia, T. Çuhadar, A. de Lesquen, J. Pretz, J. A. Garzon, Franco Bradamante, D. Y. Bardin, M. Giorgi, J. Polec, B. Badelek, C. Fernandez, R. Birsa, N. Hayashi, A. Sandacz, F. Perrot-Kunne, C.S. Ozben, S. Trentalange, D. G. Crabb, Yu. Kisselev, W. Wislicki, A. Steinmetz, T. Lindqvist, D. L. Adams, T. Akdogan, D. Pose, A. Rijllart, Bernardo Adeva, A. Dyring, Heinrich B. Stuhrmann, A. Staude, T. J. Ketel, V. W. Hughes, Ulrich Landgraf, A. Karev, F. Lehar, A. Magnon, A. Tripet, B. E. Bonner, M. Grosse-Perdekamp, Rudiger Voss, Michal Szleper, S. Ishimoto, R. van Dantzig, I. G. Bird, E. P. Sichtermann, K. Zaremba, M. Plo, U. Stiegler, Faustino Gómez, Kunikazu Mori, K. Medved, Anna Zanetti, K. Kurek, C. A. Whitten, Anne-Laure Martin, (Astro)-Particles Physics, D., Adam, B., Adeva, T., Akdogan, E., Arik, A., Arvidson, B., Badelek, M. K., Ballintijn, D., Bardin, G., Bardin, G., Baum, P., Berglund, L., Betev, I. G., Bird, Birsa, Renato, P., Björkholm, B. E., Bonner, N., de Botton, M., Boutemeur, Bradamante, Franco, A., Bravar, Bressan, Andrea, S., Bültmann, E., Burtin, C., Cavata, D., Crabb, J., Cranshaw, T., Çuhadar, DALLA TORRE, Silvia, R., van Dantzig, B., Derro, A., Deshpande, S., Dhawan, C., Dulya, A., Dyring, S., Eichblatt, J. C., Faivre, D., Fasching, F., Feinstein, C., Fernandez, B., Froi, A., Galla, J. A., Garzon, T., Gaussiran, Giorgi, Marcello, E., von Goeler, F., Gomez, G., Gracia, N., de Groot, M., Grosse Perdekamp, D., von Harrach, T., Hasegawa, P., Hautle, N., Hayashi, C. A., Heusch, N., Horikawa, V. W., Hughe, G., Igo, S., Ishimoto, T., Iwata, E. M., Kabuß, T., Kageya, L., Kalinovskaya, A., Karev, H. J., Kessler, T. J., Ketel, J., Kiryluk, A., Kishi, Kisselev, Y. u., L., Klostermann, D., Krämer, V., Krivokhijine, W., Kröger, V., Kukhtin, K., Kurek, J., Kyynäräinen, M., Lamanna, U., Landgraf, J. M., Le Goff, F., Lehar, A., de Lesquen, J., Lichtenstadt, T., Lindqvist, M., Litmaath, M., Lowe, A., Magnon, G. K., Mallot, F., Marie, Martin, Anna, J., Martino, T., Matsuda, B., Maye, J. S., Mccarthy, K., Medved, G., van Middelkoop, D., Miller, K., Mori, J., Moromisato, A., Nagaitsev, J., Nassalski, L., Naumann, T. O., Niinikoski, J. E. J., Oberski, A., Ogawa, C., Ozben, D. P., Park, F., Perrot Kunne, D., Peshekhonov, R., Piegaia, L., Pinsky, S., Platchkov, M., Plo, J., Polec, D., Pose, H., Postma, J., Pretz, R., Puntaferro, T., Pussieux, J., Pyrlik, G., Rädel, G., Rijllart, J. B., Robert, S., Rock, M., Rodriguez, E., Rondio, A., Rosado, I., Sabo, J., Saborido, A., Sandacz, I., Savin, Schiavon, Paolo, K. P., Schüler, R., Seitz, Y., Semertzidi, F., Sever, P., Shanahan, E. P., Sichtermann, Simeoni, Fabrizio, G. I., Smirnov, A., Staude, A., Steinmetz, U., Stiegler, H., Stuhrmann, M., Szleper, K. M., Teichert, F., Tessarotto, W., Tlaczala, S., Trentalange, A., Tripet, G., Unel, M., Velasco, J., Vogt, R., Vo, R., Weinstein, C., Whitten, R., Windmolder, R., Willumeit, W., Wislicki, A., Witzmann, A., Yañez, Y., Ylöstalo, Zanetti, ANNA MARIA, K., Zaremba, and J., Zhao

Subjects
Physics, DIS, Nuclear and High Energy Physics, Strange quark, Muon, SMC, Scattering, g1 structure function, Perturbative QCD, Deep inelastic scattering, Nuclear physics, High Energy Physics::Experiment, Sum rule in quantum mechanics, Nucleon, Particle Physics - Experiment, Spin-½
Abstract

We present a new measurement of the spin-dependent structure function $g_{1}^{\rm d}$ of the deuteron from deep inelastic scattering of 190 GeV polarized muons on polarized deuterons. The results are combined with our previous measurements of $g_{1}^{\rm d}$. A perturbative QCD evolution in next-to-leading order is used to compute $g_{1}^{\rm d}(x)$ at a constant $Q^{2}$. At $Q^{2} = 10$ GeV$^{2}$, we obtain a first moment $\Gamma_{1}^{\rm d} = \int_{0}^{1} g_{1}^{\rm d}{\rm d}x = 0.041 \pm 0.008$, a flavour-singlet axial charge of the nucleon $a_{0} = 0.30 \pm 0.08$, and an axial charge of the strange quark $a_{s} = -0.09 \pm 0.03$. Using our earlier determination of $\Gamma_{1}^{\rm p}$, we obtain $\Gamma_1^{\rm p} - \Gamma_1^{\rm n} = 0.183 \pm 0.035$ at $Q^2 = 10\,\mbox{GeV}^2$. This result is in agreement with the Bjorken sum rule which predicts $\Gamma_1^{\rm p} - \Gamma_1^{\rm n} = 0.186 \pm 0.002$ at the same $Q^2$.

Published
1997
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4. Polarisation of valence and non-strange sea quarks in the nucleon from semi-inclusive spin asymmetries

Author

S. Lopez-Ponte, Yu. Kisselev, J. C. Faivre, T. O. Niinikoski, Alan D. Martin, Etienne Burtin, F. Marie, E. Rondio, T. Layda, P. Shanahan, M. Plo, K. M. Teichert, G.I. Smirnov, G. Bardin, Jinkui Zhao, R. E. Segel, A. Nagaitsev, J. M. Le Goff, K. P. Schüler, E. Arik, T. Kageya, Jay Roberts, Naoaki Horikawa, M. Grosse Perdekamp, J. H. Moromisato, S. K. Dhawan, D. Crabb, Cristino Pérez, M. Velasco, S. Dalla Torre, I. Sabo, Takahiro Iwata, J. Nassalski, J. Cranshaw, T. Gaussiran, D. J. Miller, S. Eichblatt, W. Wislicki, Iskender Atilla Reyhancan, V. G. Krivokhijine, T. Hasegawa, Michal Szleper, A. Steinmetz, Lawrence Pinsky, Patrick Hautle, J. Vogt, J.A. Garzon, J. S. McCarthy, J. Kyynäräinen, P. Schiavon, T. Matsuda, A. Ogawa, J. E.J. Oberski, S. Rock, I.G. Bird, Sergey M. Sergeev, A. Kishi, C. Fernandez, B. Frois, A. Rosado, M. Lowe, P. Björkholm, F. Sever, M. K. Ballintijn, C. Cavata, A. de Lesquen, H. J. Kessler, Abhay Deshpande, F. Feinstein, Roland Windmolders, E. P. Sichtermann, D. Peshekhonov, A. Arvidson, F. Tessarotto, L. Naumann, W. Kröger, I.A. Savin, V. W. Hughes, J. Martino, G. K. Mallot, Alessandro Bressan, C. Dulya, D. von Harrach, Roy Weinstein, N. De Groot, E. M. Kabuß, Clemens A. Heusch, Kunikazu Mori, R. Birsa, Yannis K. Semertzidis, B. W. Mayes, F. Lehar, J. Pyrlik, Ricardo Piegaia, K. Medved, E. Gülmez, R. Seitz, M. Giorgi, J. Pretz, D. Fasching, L. Betev, T. Pussieux, Aldo Penzo, G. Gracia, G. van Middelkoop, Ulrich Landgraf, N. de Botton, A. Sandacz, H. Postma, A. Witzmann, M. Lamanna, J. Saborido, L. Klostermann, Matias Rodriguez, B. Badelek, N. Hayashi, F. Perrot-Kunne, D. Pose, Regine Willumeit, A. Karev, G. Igo, A. Rijllart, A. Staude, T. Çuhadar, Bernardo Adeva, T. J. Ketel, Franco Bradamante, A. Dyring, Heinrich B. Stuhrmann, Anna Zanetti, C. A. Whitten, Günter Baum, P. Berglund, A. Magnon, E. von Goeler, A. Gomez, S. Platchkov, M. Litmaath, J. Lichtenstadt, D. Krämer, S. Ishimoto, U. Stiegler, R. van Dantzig, B. E. Bonner, C. S. Özben, Rudiger Voss, S. Bültmann, B., Adeva, E., Arik, A., Arvidson, B., Badelek, M. K., Ballintijn, G., Bardin, G., Baum, P., Berglund, L., Betev, I. G., Bird, R., Birsa, P., Björkholm, B. E., Bonner, N., de Botton, Bradamante, Franco, Bressan, Andrea, S., Bültmann, E., Burtin, C., Cavata, D., Crabb, J., Cranshaw, T., Çuhadar, DALLA TORRE, Silvia, R., van Dantzig, A., Deshpande, S., Dhawan, C., Dulya, A., Dyring, S., Eichblatt, J. C., Faivre, D., Fasching, F., Feinstein, C., Fernandez, B., Froi, J. A., Garzon, T., Gaussiran, Giorgi, Marcello, E., von Goeler, A., Gomez, G., Gracia, N., de Groot, M., Grosse Perdekamp, E., Gülmez, D., von Harrach, T., Hasegawa, P., Hautle, N., Hayashi, C. A., Heusch, N., Horikawa, V. W., Hughe, G., Igo, S., Ishimoto, T., Iwata, E. M., Kabuß, T., Kageya, A., Karev, H. J., Kessler, T. J., Ketel, A., Kishi, Kisselev, Y. u., L., Klostermann, D., Krämer, V., Krivokhijine, W., Kröger, J., Kyynäräinen, M., Lamanna, U., Landgraf, T., Layda, J. M., Le Goff, F., Lehar, A., de Lesquen, J., Lichtenstadt, M., Litmaath, S., Lopez Ponte, M., Lowe, A., Magnon, G. K., Mallot, F., Marie, Martin, Anna, J., Martino, T., Matsuda, B., Maye, J. S., Mccarthy, K., Medved, G., van Middelkoop, D., Miller, K., Mori, J., Moromisato, A., Nagaitsev, J., Nassalski, L., Naumann, T. O., Niinikoski, J. E. J., Oberski, A., Ogawa, C., Ozben, A., Penzo, C., Perez, F., Perrot Kunne, D., Peshekhonov, R., Piegaia, L., Pinsky, S., Platchkov, M., Plo, D., Pose, H., Postma, J., Pretz, T., Pussieux, J., Pyrlik, I., Reyhancan, A., Rijllart, J. B., Robert, S., Rock, M., Rodriguez, E., Rondio, A., Rosado, I., Sabo, J., Saborido, A., Sandacz, I., Savin, Schiavon, Paolo, K. P., Schüler, R., Segel, R., Seitz, Y., Semertzidi, S., Sergeev, F., Sever, P., Shanahan, E. P., Sichtermann, G. I., Smirnov, A., Staude, A., Steinmetz, U., Stiegler, H., Stuhrmann, M., Szleper, K. M., Teichert, F., Tessarotto, M., Velasco, J., Vogt, R., Vo, R., Weinstein, C., Whitten, R., Windmolder, R., Willumeit, W., Wislicki, A., Witzmann, Zanetti, ANNA MARIA, J., Zhao, and (Astro)-Particles Physics

Subjects
Physics, Quark, Nuclear and High Energy Physics, Particle physics, Muon, Valence (chemistry), spin dependent parton distribution, High Energy Physics::Phenomenology, Hadron, Nuclear Theory, Deep inelastic scattering, valence quarks, Nuclear physics, Distribution function, spin dependent parton distributions, Deuterium, deep inelastic scattering, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Nucleon, Particle Physics - Experiment
Abstract

We present a measurement of semi-inclusive spin asymmetries for positively and negatively charged hadrons from deep inelastic scattering of polarised muons on polarised protons and deuterons in the range 0.003

Published
1996
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5. Measurement of the polarisation of a high energy muon beam

Author

Shafqat Ahmad, E. Burtin, B. Frois, M. Grosse Perdekamp, R. Seitz, S. Dhawan, Drew Parks, I. Savin, M. Litmaath, M. D. Corcoran, B. Adeva, R.E. Segel, Alan D. Martin, John C. Mitchell, K. P. Schüler, J. Cranshaw, Günter Baum, T. Pussieux, Per Berglund, A. Rijllart, H. J. Kessler, Alessandro Bressan, M. Plo, G. Perez, D. von Harrach, T. Gaussiran, Roland Windmolders, Naoaki Horikawa, B. E. Bonner, M. Rodriguez, A. Arvidson, Kwong Lau, F. Marie, J. Pyrlik, C. A. Whitten, J. C. Faivre, Gerhard K. Mallot, W. Tlaczala, E. von Goeler, M. Clocchiatti, F. Lehar, D. Sanders, I. Sabo, D. Fasching, G. Igo, J.A. Buchanan, J. M. Rieubland, M. K. Ballintijn, David Miller, T. Lindqvist, Rudiger Voss, J. H. Moromisato, A. Rosado, S. Trentalange, S. Bültmann, Aldo Penzo, J. A. Garzon, Shoji Okumi, R. Kaiser, G. Bardin, A. Witzmann, Franco Bradamante, J. E.J. Oberski, S. Ishimoto, J. Martino, A. Dyring, G. van Middelkoop, V. G. Krivokhijine, J. Nassalski, B. Badelek, Sergey M. Sergeev, W. Thiel, A. Brüll, Yu. Kisselev, J. Dupont, U. Landgrat, C. Fernandez, A. Karev, G. Gracia, F. Feinstein, A. Sandacz, N. Hayashi, P. Schiavon, S. Dalla Torre, M. Velasco, R. van Dantzig, F. Perrot-Kunne, Wojciech Wislicki, S. Eichblatt, T. Hasegawa, Anna Zanetti, M. Boutemeur, G.S. Mutchler, L. Ropelewski, S. Lopez-Ponte, A. de Lesquen, H. Stuhrmann, C. A. Heusch, C. Dulya, Andrés Gómez, I. G. Bird, L. Klostermann, T. Çuhadar, A. Kishi, Ricardo Piegaia, M. Giorgi, J. Lichtenstadt, K. M. Teichert, M. de Jong, E. Rondio, T. Layda, A. Staude, J. Kyynäräinen, Jay Roberts, D. Pose, Y. Tzamouranis, J. M. Demolis, Lawrence Pinsky, Donald Crabb, Tjeerd Ketel, V. W. Hughes, Takahiro Iwata, J. S. McCarthy, P. Björkholm, F. Tessarotto, C. Cavata, S. Platchkov, P. Shanahan, Kunikazu Mori, L. Naumann, Roy Weinstein, G. Smirnov, L. Betev, K. Zaremba, E. M. Kabuss, C. Garabatos, R. Birsa, A. Magnon, J.M. Clement, B. W. Mayes, J. Saborido, J. Vogt, N. de Botton, Victor Kukhtin, M. Lamanna, D.V. Peshekhonov, M. Lowe, J. P. Chen, L. Gatignon, Donal Day, Jinkui Zhao, Aina Yañez, F. Sever, T. O. Niinikoski, H. Postma, A. Steinmetz, B., Adeva, S., Ahmad, A., Arvidson, B., Badelek, M. K., Ballintijn, G., Bardin, G., Baum, P., Berglund, L., Betev, I. G., Bird, Birsa, Renato, P., Björkholm, B. E., Bonner, N., de Botton, M., Boutemeur, Bradamante, Franco, Bressan, Andrea, A., Brüll, J., Buchanan, S., Bültmann, E., Burtin, C., Cavata, J. P., Chen, J., Clement, M., Clocchiatti, M. D., Corcoran, D., Crabb, J., Cranshaw, T., Çuhadar, DALLA TORRE, Silvia, R., van Dantzig, D., Day, J. M., Demoli, S., Dhawan, C., Dulya, J., Dupont, A., Dyring, S., Eichblatt, J. C., Faivre, D., Fasching, F., Feinstein, C., Fernandez, B., Froi, C., Garabato, J. A., Garzon, L., Gatignon, T., Gaussiran, Giorgi, Marcello, E., von Goeler, A., Gomez, G., Gracia, M., Grosse Perdekamp, D., von Harrach, T., Hasegawa, N., Hayashi, C. A., Heusch, N., Horikawa, V. W., Hughe, G., Igo, S., Ishimoto, T., Iwata, M., de Jong, E. M., Kabu, R., Kaiser, A., Karev, H. J., Kessler, T. J., Ketel, A., Kishi, Kisselev, Y. u., L., Klostermann, V., Krivokhijine, V., Kukhtin, J., Kyynäräinen, M., Lamanna, U., Landgrat, K., Lau, T., Layda, F., Lehar, A., de Lesquen, J., Lichtenstadt, T., Lindqvist, M., Litmaath, S., Lopez Ponte, M., Lowe, A., Magnon, G. K., Mallot, F., Marie, Martin, Anna, J., Martino, B., Maye, J. S., Mccarthy, G., van Middelkoop, D., Miller, J., Mitchell, K., Mori, J., Moromisato, G. S., Mutchler, J., Nassalski, L., Naumann, T. O., Niinikoski, J. E. J., Oberski, S., Okumi, D. P., Park, A., Penzo, G., Perez, F., Perrot Kunne, D., Peshekhonov, R., Piegaia, L., Pinsky, S., Platchkov, M., Plo, D., Pose, H., Postma, T., Pussieux, J., Pyrlik, J. M., Rieubland, A., Rijllart, J. B., Robert, M., Rodriguez, E., Rondio, L., Ropelewski, A., Rosado, I., Sabo, J., Saborido, A., Sandacz, D., Sander, I., Savin, Schiavon, Paolo, K. P., Schüler, R., Segel, R., Seitz, S., Sergeev, F., Sever, P., Shanahan, G., Smirnov, A., Staude, A., Steinmetz, H., Stuhrmann, W., Tlaczala, K. M., Teichert, F., Tessarotto, W., Thiel, S., Trentalange, Y., Tzamourani, M., Velasco, J., Vogt, R., Vo, R., Weinstein, C., Whitten, R., Windmolder, W., Wislicki, A., Witzmann, A., Yañez, Zanetti, ANNA MARIA, K., Zaremba, and J., Zhao

Subjects
Physics, Nuclear and High Energy Physics, Large Hadron Collider, Muon, Physics::Instrumentation and Detectors, Polarimeter, positron energy spectrum, muon beam polarimeter, Nuclear physics, Positron, Energy spectrum, Physics::Accelerator Physics, High Energy Physics::Experiment, Detectors and Experimental Techniques, Nuclear Experiment, Instrumentation, Energy (signal processing), Beam (structure)
Abstract

A muon beam polarimeter has been built for the SMC experiment at the CERN SPS, for muon energies of 100 to 200 GeV. The beam polarisation is determined from the energy spectrum of positrons from the decay μ+ → e+ νcνμ. A polarisation of - 0.82 is measured with a relative systematic accuracy of 3%.

Published
1994
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6. Spin asymmetries for events with highpThadrons in DIS and an evaluation of the gluon polarization

Author

A. Staude, T. O. Niinikoski, S. Platchkov, Y. Miyachi, C. S. Özben, A. Karev, W. Meyer, Etienne Burtin, G. Igo, Rudiger Voss, T. J. Ketel, J. A. Garzon, Franco Bradamante, M. Plo, J. E.J. Oberski, Gerhard K. Mallot, W. Tlaczala, A. Magnon, P. Schiavon, Matias Rodriguez, D. Peshekhonov, David Miller, E. P. Sichtermann, T. Hasegawa, T. Matsuda, J. Kiryluk, M. Litmaath, F. Simeoni, G.I. Smirnov, A. Bravar, J. Martino, J. Lichtenstadt, R. Sulej, Jay Roberts, B. Derro, Jinkui Zhao, M. Grosse Perdekamp, J. Nassalski, G. Unel, H. Gilly, S. Bültmann, D. Pose, Massimo Lamanna, Yu. Kisselev, V. W. Hughes, E. Rondio, J. H. Moromisato, Takahiro Iwata, H. J. Kessler, E. Arik, G. Reicherz, Naoaki Horikawa, Ulrich Landgraf, A. Arvidson, H. Pereira, K. Kowalik, K. Kurek, D. von Harrach, Andrea Bressan, A. Gallas, J. M. Le Goff, T. Çuhadar, Patrick Hautle, S. Ishimoto, A. de Lesquen, St. Goertz, S. Dalla Torre, Heinrich B. Stuhrmann, G. Rädel, C. Dulya, Mayda Velasco, Anna Zanetti, J. Vogt, R. van Dantzig, L. Klostermann, Ricardo Piegaia, E. M. Kabuß, D. Thers, M. Giorgi, A. Witzmann, D. Fasching, F. Lehar, C. A. Whitten, B. Badelek, J. Kyynäräinen, A. Tripet, Günter Baum, C. Fernandez, J. Cranshaw, Kunikazu Mori, B. Frois, N. Hayashi, P. Berglund, K. Medved, R. Windmolders, U. Stiegler, S. Eichblatt, E. von Goeler, A. Ogawa, Bernardo Adeva, I. Sabo, A. M. Kotzinian, J. S. McCarthy, K. Haft, F. Tessarotto, W. Kröger, Abhay Deshpande, F. Feinstein, S. K. Dhawan, Clemens A. Heusch, R. Birsa, J. Pretz, I.A. Savin, G. Gracia, Lawrence Pinsky, A. Sandacz, N. de Botton, B. W. Mayes, K. Zaremba, H. Postma, J. Saborido, N. De Groot, Regine Willumeit, Alan D. Martin, F. Marie, F. Kunne, D. G. Crabb, A. Steinmetz, L. Betev, and W. Wiślicki

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Meson production, 010308 nuclear & particles physics, media_common.quotation_subject, Hadron, Deep inelastic scattering, Polarization (waves), 01 natural sciences, Asymmetry, Gluon, Nuclear physics, 0103 physical sciences, Transverse momentum, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, 010306 general physics, Nucleon, media_common
Abstract

We present a measurement of the longitudinal spin cross section asymmetry for deep-inelastic muon-nucleon interactions with two high transverse momentum hadrons in the final state. Two methods of event classification are used to increase the contribution of the photon-gluon fusion process to above 30%. The most effective one, based on a neural network approach, provides the asymmetries A(p)lN(-->)lhhX=0.030+/-0.057(stat)+/-0.010(syst) and A(d)lN(-->)lhhX=0.070+/-0.076(stat)+/-0.010(syst). From these values we derive an averaged gluon polarization DeltaG/G=-0.20+/-0.28(stat)+/-0.10(syst) at an average fraction of nucleon momentum carried by gluons =0.07.

Published
2004
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7. Measurement of the SMC muon beam polarisation using the asymmetry in the elastic scattering off polarised electrons

Author

E. Burtin, D. Crabb, T. Kageya, M. Boutemeur, D. Fasching, F. Perrot-Kunne, J. E.J. Oberski, T. Matsuda, D.V. Peshekhonov, I. Sabo, J. Ylöstalo, Jay Roberts, J. Cranshaw, M. Grosse Perdekamp, I.A. Savin, H. Gilly, J. Nassalski, N. de Botton, Takahiro Iwata, Victor Kukhtin, Lawrence Pinsky, A. Bravar, B. W. Mayes, E. Arik, W. Tlaczala, J. S. McCarthy, H. J. Kessler, Roland Windmolders, M. Lowe, A. Arvidson, H. Pereira, M. Litmaath, A. Nagaitsev, Y. Miyachi, M. Lamanna, Igor Golutvin, F. Feinstein, David Miller, L. Naumann, Julien Faivre, G. Unel, T. O. Niinikoski, T. Gaussiran, G.K. Mallot, F. Tessarotto, W. Kröger, H. Postma, J. Kiryluk, P. Schiavon, A. Schiller, B. Derro, Alessandro Bressan, D. von Harrach, Lau Gatignon, Abhay Deshpande, N.I. Zamiatin, L. Ropelewski, K. P. Schüler, P. Berglund, E. Rondio, J. H. Moromisato, G. Reicherz, P. Björkholm, Yannis K. Semertzidis, Mayda Velasco, F. Marie, L. Betev, S. Eichblatt, Patrick Hautle, T. Hasegawa, G.I. Smirnov, S. Dalla Torre, Alan D. Martin, J. M. Le Goff, T. Çuhadar, C. Cavata, Regine Willumeit, Matias Rodriguez, S. K. Dhawan, C. Dulya, G. van Middelkoop, A. Magnon, B. Frois, Günter Baum, I. Kiryushin, A. Ogawa, E. M. Kabuß, N. De Groot, J. Vogt, Naoaki Horikawa, E. von Goeler, P. Shanahan, A. Kishi, G. Rädel, G. Igo, W. Meyer, S. Rock, Clemens A. Heusch, F. Simeoni, R. Seitz, K. Haft, Ricardo Piegaia, M. Plo, A. de Lesquen, J. Pretz, L. Klostermann, J. A. Garzon, Franco Bradamante, M. Giorgi, St. Goertz, B. Badelek, S. Forthmann, C. Fernandez, R. Birsa, N. Hayashi, A. Sandacz, C.S. Ozben, Yu. Kisselev, T. Lindqvist, J. Kyynäräinen, K. Zaremba, A. Witzmann, D. L. Adams, J. Saborido, T. Akdogan, G. Bardin, A. Rijllart, Bernardo Adeva, A. Dyring, Heinrich B. Stuhrmann, A. Staude, J. Zhao, A. Gallas, T. J. Ketel, V. W. Hughes, Ulrich Landgraf, V. Krivokhijine, A. Karev, F. Lehar, T. Pussieux, Wojciech Wislicki, J. Lichtenstadt, A. Steinmetz, B. E. Bonner, Rudiger Voss, S. Bültmann, D. Pose, Michal Szleper, S. Ishimoto, S. Platchkov, J. Martino, R. van Dantzig, Daniel B. Kramer, Sergey M. Sergeev, G. Gracia, D. Thers, E. P. Sichtermann, M. Clocchiatti, U. Stiegler, Kunikazu Mori, K. Medved, Anna Zanetti, K. Kurek, C. A. Whitten, A. Tripet, D., Adam, B., Adeva, T., Akdogan, E., Arik, A., Arvidson, B., Badelek, G., Bardin, Guenter, Baum, P., Berglund, L., Betev, Birsa, Renato, P., Bjorkholm, B. E., Bonner, N., de Botton, M., Boutemeur, Bradamante, Franco, A., Bravar, Bressan, Andrea, Stephen L., Bueltmann, E., Burtin, C., Cavata, M., Clocchiatti, D., Crabb, J., Cranshaw, T., Cuhadar, DALLA TORRE, Silvia, R., van Dantzig, B., Derro, A., Deshpande, S., Dhawan, C., Dulya, A., Dyring, S., Eichblatt, J. C., Faivre, D., Fasching, F., Feinstein, C., Fernandez, S., Forthmann, B., Froi, A., Galla, J. A., Garzon, L., Gatignon, T., Gaussiran, H., Gilly, Giorgi, Marcello, E., von Goeler, S., Goertz, I. A., Golutvin, G., Gracia, N., De Groot, M., Grosse Perdekamp, K., Haft, D., von Harrach, T., Hasegawa, P., Hautle, N., Hayashi, C. A., Heusch, N., Horikawa, V. W., Hughe, G., Igo, S., Ishimoto, T., Iwata, E. M., Kabu, T., Kageya, A., Karev, H. J., Kessler, T. J., Ketel, J., Kiryluk, I., Kiryushin, A., Kishi, Kisselev, Y. u., L., Klostermann, D., Kramer, V., Krivokhizhin, W., Kroger, V., Kukhtin, K., Kurek, J., Kyynarainen, M., Lamanna, U., Landgraf, J. M., Le Goff, F., Lehar, A., de Lesquen, J., Lichtenstadt, T., Lindqvist, M., Litmaath, M., Lowe, A., Magnon, G. K., Mallot, F., Marie, Martin, Anna, J., Martino, T., Matsuda, B., Maye, J. S., Mccarthy, K., Medved, W., Meyer, G., van Middelkoop, D., Miller, Y., Miyachi, K., Mori, J., Moromisato, A., Nagaitsev, J., Nassalski, L., Naumann, T. O., Niinikoski, J. E. J., Oberski, A., Ogawa, C., Ozben, H., Pereira, F., Kunne, D., Peshekhonov, R., Piegaia, Lawrence S., Pinsky, S., Platchkov, M., Plo, D., Pose, H., Postma, J., Pretz, T., Pussieux, G., Radel, A., Rijllart, G., Reicherz, J. B., Robert, S. E., Rock, M., Rodriguez, E., Rondio, L., Ropelewski, I., Sabo, J., Saborido, A., Sandacz, Igor A., Savin, P., Schiavon, A., Schiller, K. P., Schuler, R., Seitz, Y., Semertzidi, S., Sergeev, P., Shanahan, E. P., Sichtermann, F., Simeoni, G. I., Smirnov, A., Staude, A., Steinmetz, U., Stiegler, H., Stuhrmann, M., Szleper, F., Tessarotto, D., Ther, W., Tlaczala, A., Tripet, G., Unel, M., Velasco, J., Vogt, R., Vo, C., Whitten, R., Windmolder, R., Willumeit, W., Wislicki, A., Witzmann, J., Ylostalo, A. M., Zanetti, K., Zaremba, N. I., Zamiatin, J., Zhao, and (Astro)-Particles Physics

Subjects
electron, Nuclear and High Energy Physics, SMC, DIS, muon polarimeter, media_common.quotation_subject, muon beam, Electron, Asymmetry, Nuclear physics, Magnetization, polarisation measurement, Detectors and Experimental Techniques, Nuclear Experiment, Instrumentation, media_common, Physics, Elastic scattering, Large Hadron Collider, Muon, polarised scattering, magnetised target, Polarimeter, polarised muon, Polarization (waves), Physics::Accelerator Physics, High Energy Physics::Experiment, polarised
Abstract

A muon beam polarimeter was built for the SMC experiment at the CERN SPS, for beam energies of 100 and 190 GeV. The beam polarisation is determined from the asymmetry in the elastic scattering off the polarised electrons of a ferromagnetic target whose magnetisation is periodically reversed. At muon energies of 100 and 190 GeV the measured polarisation is P-mu = -0.80 +/- 0.03 (stat.) +/- 0.02 (syst.) and P-mu = - 0.797 +/- 0.011 (stat.) +/- 0.012 (syst.), respectively. These results agree with measurements of the beam polarisation using a shape analysis of the decay positron energy spectrum. (C) 2000 Elsevier Science B.V. All rights reserved.

Published
2000
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8. A large Streamer Chamber muon tracking detector in a high-flux fixed-target application

Author

B. Frois, V. W. Hughes, J. Vogt, Kwong Lau, E. Arik, G. van Middelkoop, C. Garabatos, E. Burtin, Patrick Hautle, Ulrich Landgraf, Drew Parks, C.S. Ozben, T. O. Niinikoski, P. Berglund, A. Staude, F. Tessarotto, C. A. Whitten, A. Tripet, M. Boutemeur, D. Fasching, P. Shanahan, F. Simeoni, M. Plo, W. Kröger, W. Meyer, H Gilly, D. Crabb, Abhay Deshpande, A. Witzmann, T. Kageya, Heinrich B. Stuhrmann, J. M. Le Goff, M. K. Ballintijn, G. Gracia, Iskender Atilla Reyhancan, T. J. Ketel, N.I. Zamiatin, T. Çuhadar, T. Hasegawa, I Tzamouranis, H. Postma, D. Sanders, D. L. Adams, Clemens A. Heusch, J. Zhao, S. Rock, R. Birsa, A. Karev, Anna Zanetti, U. Stiegler, Alessandro Bressan, D. von Harrach, L. Naumann, J. H. Moromisato, A. Gallas, Yannis K. Semertzidis, A. Ogawa, F. Lehar, A. Kishi, Yu. Kisselev, B. Roscherr, C. Dulya, J. Pyrlik, G. Reicherz, K. Haft, Y. Miyachi, Mayda Velasco, Sergey M. Sergeev, B. E. Bonner, A. de Lesquen, St. Goertz, T. Lindqvist, F. Marie, L. Betev, N. Horikawa, Ricardo Piegaia, M. Giorgi, G.I. Smirnov, S. Dalla Torre, F. Perrot-Kunne, W. Tlaczala, K. Zaremba, Iu Kiryushin, Michal Szleper, I. Sabo, F. Sever, G. Igo, A Gomez-Tato, R Seitz, B. Derro, Günter Baum, Regine Willumeit, J. Saborido, T. Layda, N. de Botton, G. Bardin, G. Unel, A. Rijllart, F. Feinstein, D. Thers, E. P. Sichtermann, Bernardo Adeva, M. Lamanna, S. K. Dhawan, J. S. McCarthy, K. Kurek, S. Eichblatt, Lawrence Pinsky, Franco Bradamante, Erhan Gülmez, A. Dyring, K. P. Schüler, H. J. Kessler, Roland Windmolders, Rudiger Voss, A. Steinmetz, I.A. Savin, J.A. Garzon, Daniel B. Kramer, B. W. Mayes, M. Lowe, A. Arvidson, H. Pereira, Alan D. Martin, G. K. Mallot, S. Bültmann, P. Schiavon, E. M. Kabuß, L. Klostermann, K. M. Teichert, E. von Goeler, L. Ropelewski, Jay Roberts, M. Grosse Perdekamp, B. Badelek, N. Hayashi, D. Pose, E Rondio, Takahiro Iwata, G Raädel, Matias Rodriguez, David Miller, S. Ishimoto, I. G. Bird, J. Kyynäräinen, J. Cranshaw, S. Platchkov, J. Pretz, M. Litmaath, J. Martino, Igor Golutvin, R. van Dantzig, A. Sandacz, T. Pussieux, Wojciech Wislicki, A Rosado, T. Matsuda, D.V. Peshekhonov, C. Fernandez, J. Lichtenstadt, P. Björkholm, C. Cavata, Roy Weinstein, N. De Groot, T. Gaussiran, S. Forthmann, S. Trentalange, R. E. Segel, J. Kiryluk, Aldo Penzo, A. Magnon, A. Schiller, J. E.J. Oberski, J. Nassalski, Kunikazu Mori, K. Medved, A. Bravar, Julien Faivre, (Astro)-Particles Physics, D., Adam, B., Adeva, E., Arik, A., Arvidson, B., Badelek, M. K., Ballintijn, G., Bardin, Guenter, Baum, P., Berglund, L., Betev, I. G., Bird, Birsa, Renato, P., Bjorkholm, B. E., Bonner, N., de Botton, M., Boutemeur, Bradamante, Franco, A., Bravar, Bressan, Andrea, Stephen L., Bueltmann, E., Burtin, C., Cavata, D., Crabb, J., Cranshaw, T., Cuhadar, DALLA TORRE, Silvia, R., van Dantzig, B., Derro, A., Deshpande, S., Dhawan, C., Dulya, A., Dyring, S., Eichblatt, J. C., Faivre, D., Fasching, F., Feinstein, C., Fernandez, S., Forthmann, B., Froi, A., Galla, J. A., Garzon, T., Gaussiran, H., Gilly, Giorgi, Marcello, E., von Goeler, S., Goertz, G., Gracia, N., de Groot, M., Grosse Perdekamp, Erhan, Gulmez, K., Haft, D., von Harrach, T., Hasegawa, P., Hautle, N., Hayashi, C. A., Heusch, N., Horikawa, V. W., Hughe, G., Igo, S., Ishimoto, T., Iwata, E. M., Kabu, T., Kageya, A., Karev, H. J., Kessler, T. J., Ketel, J., Kiryluk, Kiryushin, I. u., A., Kishi, Kiselev, Y. u., L., Klostermann, D., Kramer, W., Kroger, K., Kurek, J., Kyynarainen, M., Lamanna, U., Landgraf, K., Lau, T., Layda, J. M., Le Goff, F., Lehar, A., de Lesquen, J., Lichtenstadt, T., Lindqvist, M., Litmaath, M., Lowe, A., Magnon, G. K., Mallot, F., Marie, Martin, Anna, J., Martino, T., Matsuda, B., Maye, J. S., Mccarthy, K., Medved, W., Meyer, G., van Middelkoop, D., Miller, Y., Miyachi, K., Mori, J., Moromisato, J., Nassalski, L., Naumann, T. O., Niinikoski, J. E. J., Oberski, A., Ogawa, C., Ozben, D. P., Park, H., Pereira, A., Penzo, F., Kunne, D., Peshekhonov, R., Piegaia, Lawrence S., Pinsky, S., Platchkov, M., Plo, D., Pose, H., Postma, J., Pretz, T., Pussieux, J., Pyrlik, G., Radel, I., Reyhancan, G., Reicherz, A., Rijllart, J. B., Robert, S., Rock, M., Rodriguez, E., Rondio, A., Rosado, B., Roscherr, I., Sabo, J., Saborido, A., Sandacz, D., Sander, Igor A., Savin, Schiavon, Paolo, A., Schiller, K. P., Schuler, R., Segel, R., Seitz, Y., Semertzidi, S., Sergeev, F., Sever, P., Shanahan, E. P., Sichtermann, F., Simeoni, G. I., Smirnov, A., Staude, A., Steinmetz, U., Stiegler, H., Stuhrmann, M., Szleper, K. M., Teichert, F., Tessarotto, D., Ther, W., Tlaczala, S., Trentalange, A., Tripet, I., Tzamourani, G., Unel, M., Velasco, J., Vogt, R., Vo, R., Weinstein, C., Whitten, R., Windmolder, R., Willumeit, W., Wislicki, A., Witzmann, Zanetti, ANNA MARIA, K., Zaremba, and J., Zhao

Subjects
Physics, DIS, Nuclear and High Energy Physics, Large Hadron Collider, SMC, Physics::Instrumentation and Detectors, business.industry, Detector, High voltage, STRIPS, Tracking (particle physics), law.invention, Nuclear physics, Optics, Large area detectors, law, Tube (fluid conveyance), Detectors and Experimental Techniques, business, Instrumentation, Beam (structure), Electronic circuit
Abstract

Arrays of limited streamer tubes of the Iarocci type were deployed in our experiment at CERN as part of a forward muon detector system with provisions for the beam to pass through the center of each panel in the array. A total of 16 4 m x 4 m panels were assembled with inductive readout strips on both sides of each panel. An active feedback system. was deployed to regulate the high voltage to the streamer tubes to insure a constant efficiency for minimum ionizing particles. The arrays were operated in this environment for over five years of data taking. Streamer tube track-reconstruction efficiencies and tube replacement rates are reported. (C) 1999 Elsevier Science B.V. All rights reserved.

Published
1999
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9. The polarized double cell target of the SMC

Author

G. van Middelkoop, Patrick Hautle, H. Postma, W. Meyer, Yu. Kisselev, G. Gracia, J. H. Moromisato, T. Lindqvist, Y. Miyachi, G. Igo, Regine Willumeit, G. Reicherz, G. Bardin, T. Gaussiran, U. Stiegler, S. Forthmann, S. Trentalange, Heinrich B. Stuhrmann, G.I. Smirnov, S. Dalla Torre, N. Horikawa, Franco Bradamante, I.A. Savin, E. Burtin, Drew Parks, Michal Szleper, F. Feinstein, B. Frois, J. Vogt, J.A. Garzon, B. W. Mayes, M. Boutemeur, D. Fasching, A. Gallas, Daniel B. Kramer, K. Kurek, A. Ogawa, A. Staude, K. P. Schüler, R. Seitz, D. von Harrach, Abhay Deshpande, T. Matsuda, D.V. Peshekhonov, S. K. Dhawan, K. Haft, Yannis K. Semertzidis, J. Pyrlik, P. Shanahan, S. Eichblatt, J. Pretz, Clemens A. Heusch, H. J. Kessler, T. Çuhadar, R. Birsa, H. Gilly, G. Rädel, P. Schiavon, D. Crabb, F. Perrot-Kunne, T. Hasegawa, F. Simeoni, M. Plo, B. E. Bonner, Jinkui Zhao, Roland Windmolders, T. Kageya, Iskender Atilla Reyhancan, Mayda Velasco, F. Marie, L. Betev, Anna Zanetti, N. de Botton, A. Kishi, A. Rosado, A. Rijllart, Bernardo Adeva, A. de Lesquen, M. Lamanna, St. Goertz, M. Lowe, A. Arvidson, H. Pereira, Andrea Bressan, C. S. Özben, B. Roscherr, Lawrence Pinsky, A. Sandacz, G. K. Mallot, T. J. Ketel, L. Klostermann, C. A. Whitten, F. Tessarotto, W. Kröger, E. Arik, Rudiger Voss, A. Tripet, G. Unel, S. Bültmann, K. M. Teichert, Matias Rodriguez, S. Rock, D. Pose, J. Kyynäräinen, K. Zaremba, A. Dyring, Jay Roberts, D. Thers, B. Badelek, E. P. Sichtermann, M. Grosse Perdekamp, J. Saborido, S. Ishimoto, T. Layda, David Miller, Günter Baum, I. Sabo, S. Platchkov, N. Hayashi, B. Neganov, V. Krivokhijine, W. Tlaczala, J. Martino, J. M. Rieubland, J. S. McCarthy, P. Björkholm, Takahiro Iwata, A. Karev, R. van Dantzig, Alan D. Martin, C. Cavata, E. von Goeler, A. Bravar, M. K. Ballintijn, A. Witzmann, F. Lehar, T. Pussieux, Wojciech Wislicki, M. Litmaath, Julien Faivre, Roy Weinstein, N. De Groot, D. L. Adams, J. Lichtenstadt, C. Fernandez, C. Dulya, I. G. Bird, Ricardo Piegaia, V. W. Hughes, M. Giorgi, A. Steinmetz, Ulrich Landgraf, P. Berglund, T.O. Niinikoski, E. Rondio, J. M. Le Goff, L. Naumann, B. Derro, R. E. Segel, J. Kiryluk, F. Sever, Erhan Gülmez, E. M. Kabuß, J. Cranshaw, Kunikazu Mori, K. Medved, J. E.J. Oberski, J. Nassalski, Aldo Penzo, A. Magnon, A. Schiller, (Astro)-Particles Physics, D., Adam, B., Adeva, E., Arik, A., Arvidson, B., Badelek, M. K., Ballintijn, G., Bardin, Guenter, Baum, P., Berglund, L., Betev, I. G., Bird, Birsa, Renato, P., Bjorkholm, B. E., Bonner, N., de Botton, M., Boutemeur, Bradamante, Franco, A., Bravar, Bressan, Andrea, Stephen L., Bueltmann, E., Burtin, C., Cavata, D., Crabb, J., Cranshaw, T., Cuhadar, DALLA TORRE, Silvia, R., van Dantzig, B., Derro, A., Deshpande, S., Dhawan, C., Dulya, A., Dyring, S., Eichblatt, J. C., Faivre, D., Fasching, F., Feinstein, C., Fernandez, S., Forthmann, B., Froi, A., Galla, J. A., Garzon, T., Gaussiran, H., Gilly, Giorgi, Marcello, E., von Goeler, S., Goertz, G., Gracia, N., De Groot, M., Grosse Perdekamp, Erhan, Gulmez, K., Haft, D., von Harrach, T., Hasegawa, P., Hautle, N., Hayashi, C. A., Heusch, N., Horikawa, V. W., Hughe, G., Igo, S., Ishimoto, T., Iwata, E. M., Kabu, T., Kageya, A., Karev, H. J., Kessler, T. J., Ketel, J., Kiryluk, A., Kishi, Kiselev, Y. u., L., Klostermann, D., Kramer, V., Krivokhizhin, W., Kroger, K., Kurek, J., Kyynarainen, M., Lamanna, U., Landgraf, T., Layda, J. M., Le Goff, F., Lehar, A., de Lesquen, J., Lichtenstadt, T., Lindqvist, M., Litmaath, M., Lowe, A., Magnon, G. K., Mallot, F., Marie, Martin, Anna, J., Martino, T., Matsuda, B., Maye, J. S., Mccarthy, K., Medved, W., Meyer, G., van Middelkoop, D., Miller, Y., Miyachi, K., Mori, J., Moromisato, J., Nassalski, L., Naumann, B., Neganov, T. O., Niinikoski, J. E. J., Oberski, A., Ogawa, C., Ozben, D. P., Park, H., Pereira, A., Penzo, F., Kunne, D., Peshekhonov, R., Piegaia, Lawrence S., Pinsky, S., Platchkov, M., Plo, D., Pose, H., Postma, J., Pretz, T., Pussieux, J., Pyrlik, G., Radel, I., Reyhancan, G., Reicherz, A., Rijllart, J. B., Robert, S., Rock, M., Rodriguez, E., Rondio, A., Rosado, B., Roscherr, I., Sabo, J., Saborido, A., Sandacz, Igor A., Savin, Schiavon, Paolo, A., Schiller, K. P., Schuler, R., Segel, R., Seitz, Y., Semertzidi, F., Sever, P., Shanahan, E. P., Sichtermann, F., Simeoni, G. I., Smirnov, A., Staude, A., Steinmetz, U., Stiegler, H., Stuhrmann, M., Szleper, K. M., Teichert, F., Tessarotto, D., Ther, W., Tlaczala, S., Trentalange, A., Tripet, G., Unel, M., Velasco, J., Vogt, R., Vo, R., Weinstein, C., Whitten, R., Windmolder, R., Willumeit, W., Wislicki, A., Witzmann, Zanetti, ANNA MARIA, K., Zaremba, and J., Zhao

Subjects
Physics, Nuclear and High Energy Physics, DIS, Large Hadron Collider, Muon, analysis, Scattering, SMC, Polarized target, Spin structure, polarized protons and deuterons, Polarization (waves), Deep inelastic scattering, NMR, dynamic nuclear polarization, Nuclear physics, Deuterium, Physics::Accelerator Physics, High Energy Physics::Experiment, Detectors and Experimental Techniques, Nuclear Experiment, Nucleon, Instrumentation
Abstract

The polarized target of the Spin Muon Collaboration at CERN was used for deep inelastic muon scattering experiments during 1993-1996 with a polarized muon beam to investigate the spin structure of the nucleon. Most of the experiments were carried out with longitudinal target polarization and 190 GeV muons, and some were done with transverse polarization and 100 GeV muons. Protons as well as deuterons were polarized by dynamic nuclear polarization (DNP) in three kinds of solid materials - butanol, ammonia, and deuterated butanol - with maximum degrees of polarization of 94%, 91% and 60%, respectively. Considerable attention was paid to the accuracies of the NMR polarization measurements and their analyses, the accuracies achieved were between 2.0% and 3.2%. The SMC target system with two cells of opposite polarizations, each cell 65 cm long and 5 cm in diameter, constitutes the largest polarized target system ever built and facilitates accurate spin asymmetry measurements. The design considerations, construction and performance of the target are reviewed, (C) 1999 Elsevier Science B.V. All rights reserved.

Published
1999
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10. Spin asymmetriesA1and structure functionsg1of the proton and the deuteron from polarized high energy muon scattering

Author

J. Ylöstalo, K. Zaremba, L. Naumann, Patrick Hautle, M. Litmaath, I. Sabo, B. Derro, V. G. Krivokhijine, J. S. McCarthy, A. Witzmann, J. Roberts, B. Frois, A. Ogawa, C. Dulya, T. Hasegawa, J. H. Moromisato, P. Berglund, Naoaki Horikawa, T. Matsuda, H. Gilly, G. Reicherz, S. Bültmann, E. von Goeler, E. Rondio, M. Giorgi, J. E.J. Oberski, S. Dalla Torre, A. Kishi, A. Staude, P. Shanahan, J. M. Le Goff, Gerhard K. Mallot, T. Çuhadar, Heinrich B. Stuhrmann, W. Tlaczala, J. Vogt, A. Magnon, F. Simeoni, G.I. Smirnov, Abhay Deshpande, C. A. Whitten, Yu. Kisselev, A. de Lesquen, St. Goertz, F. Feinstein, David Miller, G. Rädel, J. Nassalski, Clemens A. Heusch, D. Crabb, T. Lindqvist, Igor Golutvin, A. Tripet, P. Björkholm, R. Birsa, T. J. Ketel, Sergey M. Sergeev, Michal Szleper, S. Eichblatt, S. Forthmann, C. Cavata, P. Schiavon, L. Klostermann, G. Baum, J. Lichtenstadt, I. Kiryushin, T. Kageya, Lawrence Pinsky, Kunikazu Mori, T. O. Niinikoski, I. G. Bird, Taylan Akdogan, Etienne Burtin, S. Rock, L. Ropelewski, E. Arik, B. Badelek, A. Dyring, A. Steinmetz, K. Medved, R. Seitz, J. Kyynäräinen, C. Fernandez, Wojciech Wislicki, D. Thers, E. P. Sichtermann, N. Hayashi, D. Krämer, D. Pose, F. Perrot-Kunne, R. Puntaferro, Matias Rodriguez, N. De Groot, Krzysztof Kurek, M. Boutemeur, D. Fasching, C. Ozben, G. Bardin, K. P. Schüler, Anna Zanetti, T. Pussieux, M. Plo, J. Kiryluk, A. Karev, A. Bravar, G. van Middelkoop, U. Stiegler, S. Platchkov, A. Rijllart, W. Meyer, G. Igo, S. Ishimoto, F. Lehar, Bernardo Adeva, J. A. Garzon, Franco Bradamante, D. von Harrach, G. Gracia, Yannis K. Semertzidis, Mayda Velasco, L. Betev, A. Sandacz, E. M. Kabuß, G. Unel, A. Nagaitsev, V. W. Hughes, N. Zamiatin, R. van Dantzig, Ulrich Landgraf, Rudiger Voss, H. J. Kessler, Roland Windmolders, F. Tessarotto, A. Schiller, W. Kröger, M. Lowe, A. Arvidson, H. Pereira, Andrea Bressan, J. Martino, A. Gallas, N. de Botton, Victor Kukhtin, M. Lamanna, J. Saborido, K. Haft, J. Pretz, J. Cranshaw, I.A. Savin, M. Grosse Perdekamp, R. Piegia, B. W. Mayes, J. Zhao, Takahiro Iwata, Y. Miyachi, D. Peshekhonov, J. C. Faivre, Alan D. Martin, F. Marie, S. K. Dhawan, H. Postma, and Regine Willumeit

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), Muon, Proton, Scattering, Hadron, Spin structure, Nuclear physics, Radiative transfer, High Energy Physics::Experiment, Nuclear Experiment, Spin-½
Abstract

We present the final results of the spin asymmetries A1 and the spin structure functions g1 of the proton and the deuteron in the kinematic range 0.0008

Published
1998
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11. Measurement of proton and nitrogen polarization in ammonia and a test of equal spin temperature

Author

J. Polec, A. Schiller, J. Ylöstalo, Drew Parks, V. W. Hughes, M. Litmaath, G. Reicherz, M. Giorgi, A. Karev, J. M. Le Goff, Ulrich Landgraf, B. Derro, E. Arik, S. Ishimoto, Abhay Deshpande, S. Dalla Torre, G. Igo, J. Kiryluk, R. van Dantzig, H. Pereira Da Costa, David Miller, T. Hasegawa, J. A. Garzon, G. van Middelkoop, Franco Bradamante, E. Kok, Rudiger Voss, T. Matsuda, A. Rijllart, J. Vogt, H. Dutz, Bernardo Adeva, E. Rondio, H. Gilly, W. Meyer, S. Bültmann, P. Schiavon, Yu. Kisselev, D. Crabb, Heinrich B. Stuhrmann, M. Plückthun, A. de Lesquen, J. Lichtenstadt, Anna Zanetti, S. Platchkov, R. Puntaferro, P. Berglund, A. Magnon, A. Staude, D. Krämer, M. Plo, D. Fasching, R. Gehring, J. Cranshaw, M. Grosse Perdekamp, D. von Harrach, J. Harmsen, Matias Rodriguez, L. Betev, Kunikazu Mori, T. J. Ketel, C. Bradtke, N. Horikawa, K. Medved, J. S. McCarthy, Takahiro Iwata, J. E.J. Oberski, W. Tlaczala, Y. Miyachi, St. Goertz, E. P. Sichtermann, K. Kurek, J. Nassalski, A. Witzmann, I.A. Savin, M. Velasco, D. Peshekhonov, Günter Baum, U. Stiegler, C. Dulya, C. A. Whitten, B. W. Mayes, K. Zaremba, J. Kyynäräinen, Roland Windmolders, A. Tripet, A. Arvidson, S. Forthmann, Alan D. Martin, A. Gallas, G. K. Mallot, D. Pose, E. M. Kabuß, A. Ogawa, S. K. Dhawan, K. Haft, W. Wislicki, F. Tessarotto, F. Perrot-Kunne, W. Kröger, A. Steinmetz, H. Postma, N. de Botton, M. Lamanna, T. Kageya, B. Frois, Clemens A. Heusch, T. Çuhadar, F. Feinstein, J. Pretz, Lawrence Pinsky, G. Gracia, F. Lehar, F. Simeoni, G.I. Smirnov, A. Sandacz, G. Unel, N. De Groot, A. Bravar, G. Rädel, S. Eichblatt, B. Badelek, T. O. Niinikoski, C. Fernandez, N. Hayashi, Patrick Hautle, B., Adeva, E., Arik, A., Arvidson, B., Badelek, Guenter, Baum, P., Berglund, L., Betev, N., de Botton, Bradamante, Franco, C., Bradtke, A., Bravar, Stephen L., Bueltmann, D., Crabb, J., Cranshaw, T., Cuhadar, DALLA TORRE, Silvia, R., van Dantzig, B., Derro, A., Deshpande, S., Dhawan, C., Dulya, H., Dutz, S., Eichblatt, D., Fasching, F., Feinstein, C., Fernandez, S., Forthmann, B., Froi, A., Galla, J. A., Garzon, R., Gehring, H., Gilly, Giorgi, Marcello, S., Goertz, G., Gracia, N., de Groot, M., Grosse Perdekamp, K., Haft, J., Harmsen, D., von Harrach, T., Hasegawa, P., Hautle, N., Hayashi, C. A., Heusch, N., Horikawa, V. W., Hughe, G., Igo, S., Ishimoto, T., Iwata, E. M., Kabu, T., Kageya, A., Karev, T. J., Ketel, J., Kiryluk, Kiselev, Y. u., E., Kok, D., Kramer, W., Kroger, K., Kurek, J., Kyynarainen, M., Lamanna, U., Landgraf, J. M., Le Goff, F., Lehar, A., de Lesquen, J., Lichtenstadt, M., Litmaath, A., Magnon, G. K., Mallot, Martin, Anna, T., Matsuda, B., Maye, J. S., Mccarthy, K., Medved, W., Meyer, G., van Middelkoop, D., Miller, Y., Miyachi, K., Mori, J., Nassalski, T. O., Niinikoski, J. E. J., Oberski, A., Ogawa, D. P., Park, H., Pereira da Costa, F., Kunne, D., Peshekhonov, Lawrence S., Pinsky, S., Platchkov, M., Plo, M., Pluckthun, J., Polec, D., Pose, H., Postma, J., Pretz, R., Puntaferro, G., Radel, G., Reicherz, A., Rijllart, M., Rodriguez, E., Rondio, A., Sandacz, Igor A., Savin, Schiavon, Paolo, A., Schiller, E. P., Sichtermann, F., Simeoni, G. I., Smirnov, A., Staude, A., Steinmetz, U., Stiegler, H., Stuhrmann, F., Tessarotto, W., Tlaczala, A., Tripet, G., Unel, M., Velasco, J., Vogt, R., Vo, C., Whitten, R., Windmolder, W., Wislicki, A., Witzmann, J., Ylostalo, Zanetti, ANNA MARIA, K., Zaremba, and (Astro)-Particles Physics

Subjects
Nuclear and High Energy Physics, spin resonance, Proton, p polarized target, Nuclear Theory, chemistry.chemical_element, Ammonia, chemistry.chemical_compound, Paramagnetism, Irradiation, Detectors and Experimental Techniques, Nuclear Experiment, Instrumentation, Physics, Coupling constant, polarization, quadrupolar interactions, Polarization (waves), Nitrogen, nitrogen polarized target, dynamic nuclear, nuclear magnetic resonance, chemistry, Deuterium, Atomic physics
Abstract

The 1996 data taking of the SMC experiment used polarized protons to measure the spin-dependent structure function g(1) of the proton. Three liters of solid granular ammonia were irradiated at the Bonn electron linac in order to create the paramagnetic radicals which are needed for polarizing the protons. Proton polarizations of +/- (90 +/- 2.5)% were routinely reached. An analysis based on a theoretical line shape for spin-1. systems with large quadrupolar broadening was developed which allowed the nitrogen polarization in the ammonia to be determined with a 10% relative error. The measured quadrupolar coupling constant of N-14 agrees well with earlier extrapolated values. The polarization of the nitrogen nuclei was measured as a function of the proton polarization in order to provide a test of the equal spin temperature (EST) hypothesis. It was found to be closely valid under the dynamic nuclear polarization conditions with which the protons are polarized. Large deviations from EST could be induced by cross relaxing the proton and nitrogen spin systems at low fields. Nitrogen polarizations up to 40% were reached by these means. (C) 1998 Elsevier Science B.V. All rights reserved.

Published
1998
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12. A line-shape analysis for spin-1 NMR signals

Author

J. Kyynärämen, S. Bültmann, J. Vogt, D. Crabb, T. Pussieux, F. Lehar, D. Krämer, F. Tessarotto, Yu. Kisselev, F. Perrot-Kunne, W. Kröger, Iskender Atilla Reyhancan, T. Lindqvist, J. Ylöstalo, L. Naumann, J. Cranshaw, A. Bressan, P. Schiavon, W. Wislicki, I. Sabo, A. Karev, C. Dulya, Matias Rodriguez, M. Litmaath, G. Igo, T. Çuhadar, J. A. Garzon, A. Steinmetz, Franco Bradamante, D. Y. Bardin, B. Derro, Heinrich B. Stuhrmann, J. Harmsen, A. Witzmann, Günter Baum, Ricardo Piegaia, M. Giorgi, N. Horikawa, Patrick Hautle, P. Berglund, Clemens A. Heusch, E. Rondio, D. L. Adams, S. K. Dhawan, J. Zhao, R. Birsa, F. Feinstein, A. Magnon, N. de Botton, D. Pose, Victor Kukhtin, G. Unel, J. H. Moromisato, K. Zaremba, H. J. Kessler, M. Lamanna, E. von Goeler, F. Sever, Roland Windmolders, D. Peshekhonov, K. Rurek, G. van Middelkoop, M. Plo, G. Reicherz, V. W. Hughes, S. Dalla Torre, David Miller, A. Arvidson, L. Klostermann, E. Gülmez, J. M. Le Goff, Alan D. Martin, E. Burtin, T. Kageya, E. M. Kabuß, A. Gallas, H. Postma, R. E. Segel, M. K. Ballintijn, A. Ogawa, G. K. Mallot, M. Boutemeur, D. Fasching, W. Meyer, J. Saborido, T. Hasegawa, J. S. McCarthy, A. de Lesquen, K. M. Teichert, A. Rijllart, Anna Zanetti, T. Matsuda, J. Pretz, A. Kishi, J. Martino, Bernardo Adeva, Jay Roberts, A. Rosado, R. Gehring, D. von Harrach, M. Lowe, T. Gaussiran, Lawrence S. Pinsky, St. Goertz, Michal Szleper, M. Grosse Perdekamp, Yannis K. Semertzidis, J. Pyrlik, J. C. Faivre, C. A. Whitten, Lidia Kalinovskaya, G. Gracia, Regine Willumeit, A. Sandacz, L. Betev, A. Dyring, W. Tlaczala, I.A. Savin, M. Velasco, Takahiro Iwata, S. Eichblatt, S. Rock, P. Björkholm, B. W. Mayes, C. Cavata, E. P. Sichtermann, P. Shanahan, B. Frois, K. P. Schüler, E. Arik, U. Stiegler, Roy Weinstein, N. De Groot, F. Simeoni, A. Nagaitsev, G.I. Smirnov, F. Marie, Aina Yañez, T. O. Niinikoski, J. E.J. Oberski, J. Nassalski, R. Seitz, Faustino Gómez, Kunikazu Mori, K. Medved, A. Tripet, J. Lichtenstadt, S. Platchkov, S. Ishimoto, R. van Dantzig, B. E. Bonner, C. S. Özben, Rudiger Voss, Ulrich Landgraf, V. G. Krivokhijine, Drew Parks, G. Bardin, A. Staude, Abhay Deshpande, T. J. Ketel, B. Badelek, C. Fernandez, N. Hayashi, I. G. Bird, (Astro)-Particles Physics, C., Dulya, D., Adam, B., Adeva, E., Arik, A., Arvidson, B., Badelek, M. K., Ballintijn, D., Bardin, G., Bardin, G., Baum, P., Berglund, L., Betev, I. G., Bird, Birsa, Renato, P., Björkholm, B. E., Bonner, N., de Botton, M., Boutemeur, Bradamante, Franco, Bressan, Andrea, S., Bültmann, E., Burtin, C., Cavata, D., Crabb, J., Cranshaw, T., Çuhadar, DALLA TORRE, Silvia, R., van Dantzig, B., Derro, A., Deshpande, S., Dhawan, A., Dyring, S., Eichblatt, J. C., Faivre, D., Fasching, F., Feinstein, C., Fernandez, B., Froi, A., Galla, J. A., Garzon, T., Gaussiran, R., Gehring, Giorgi, Marcello, E., von Goeler, Goertz, S. t., F., Gomez, G., Gracia, N., de Groot, M., Grosse Perdekamp, E., Gülmez, J., Harmsen, D., von Harrach, T., Hasegawa, P., Hautle, N., Hayashi, C. A., Heusch, N., Horikawa, V. W., Hughe, G., Igo, S., Ishimoto, T., Iwata, E. M., Kabuß, T., Kageya, L., Kalinovskaya, A., Karev, H. J., Kessler, T. J., Ketel, A., Kishi, Kisselev, Y. u., L., Klostermann, D., Krämer, V., Krivokhijine, W., Kröger, V., Kukhtin, K., Kurek, J., Kyynäräinen, M., Lamanna, U., Landgraf, J. M., Le Goff, F., Lehar, A., de Lesquen, J., Lichtenstadt, T., Lindqvist, M., Litmaath, M., Lowe, A., Magnon, G. K., Mallot, F., Marie, Martin, Anna, J., Martino, T., Matsuda, B., Maye, J. S., Mccarthy, K., Medved, W., Meyer, G., van Middelkoop, D., Miller, K., Mori, J., Moromisato, A., Nagaitsev, J., Nassalski, L., Naumann, T. O., Niinikoski, J. E. J., Oberski, A., Ogawa, C., Ozben, D. P., Park, F., Perrot Kunne, D., Peshekhonov, R., Piegaia, L., Pinsky, S., Platchkov, M., Plo, D., Pose, H., Postma, J., Pretz, T., Pussieux, J., Pyrlik, G., Reicherz, I., Reyhancan, A., Rijllart, J. B., Robert, S., Rock, M., Rodriguez, E., Rondio, A., Rosado, I., Sabo, J., Saborido, A., Sandacz, I., Savin, Schiavon, Paolo, K. P., Schüler, R., Segel, R., Seitz, Y., Semertzidi, F., Sever, P., Shanahan, E. P., Sichtermann, F., Simeoni, G. I., Smirnov, A., Staude, A., Steinmetz, U., Stiegler, H., Stuhrmann, M., Szleper, K. M., Teichert, F., Tessarotto, W., Tlaczala, A., Tripet, G., Unel, M., Velasco, J., Vogt, R., Vo, R., Weinstein, C., Whitten, R., Windmolder, R., Willumeit, W., Wislicki, A., Witzmann, A., Yañez, J., Ylöstalo, Zanetti, ANNA MARIA, K., Zaremba, and J., Zhao

Subjects
Coupling constant, Physics, dis, Nuclear and High Energy Physics, Butanol, media_common.quotation_subject, smc, polarized target, Q meter, di, Polarization (waves), Asymmetry, Molecular physics, chemistry.chemical_compound, Dipole, Nuclear magnetic resonance, Deuterium, chemistry, Detectors and Experimental Techniques, Instrumentation, Shape analysis (digital geometry), media_common
Abstract

An analytic model of the deuteron absorption function has been developed and is compared to experimental NMR signals of deuterated butanol obtained at the SMC experiment in order to determine the deuteron polarization. The absorption function model includes dipolar broadening and a frequency-dependent treatment of the intensity factors. The high-precision TE signal data available are used to adjust the model for Q-meter distortions and dispersion effects. Once the Q-meter adjustment is made, the enhanced polarizations determined by the asymmetry and TE-calibration methods compare well within the accuracy of each method. In analyzing the NMR signals, the quadrupolar coupling constants could be determined for both the CD and the OD bonds of deuterated butanol.

Published
1997
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13. Large enhancement of deuteron polarization with frequency modulated microwaves

Author

J. Vogt, A. Nagaitsev, John C. Mitchell, A. Magnon, D. Crabb, Iskender Atilla Reyhancan, H. J. Kessler, Roland Windmolders, VW Hughes, Kwong Lau, J. Kyynäräinen, I.A. Savin, F. Tessarotto, J. Çuhadar, D. Peshekhonov, E. Rondio, R. Kaiser, A. Arvidson, J. Nassalski, B. W. Mayes, J. H. Moromisato, A. Brüll, C.S. Ozben, J. Pretz, J. Martino, L. Ropelewski, S. Dalla Torre, G. Gracia, T. Matsuda, Gerhard K. Mallot, K. M. Teichert, Anna Zanetti, M. Lowe, A. Rijllart, M. Plo, C. Garabatos, T. Kageya, Jay Roberts, T. Lindqvist, D. Sanders, J. M. Rieubland, M. Grosse Perdekamp, P. Björkholm, Bernardo Adeva, C. A. Whitten, C. Cavata, M. Boutemeur, A. Witzmann, A. Ogawa, J.M. Clement, V. Kukhtin, Abhay Deshpande, G. Salvato, Roy Weinstein, S. Ishimoto, N. De Groot, Takahiro Iwata, F. Feinstein, D. Pose, Alessandro Bressan, N. Horikawa, Heinrich B. Stuhrmann, J. P. Chen, M. Clocchiatti, I. Bird, D. von Harrach, I. Kiryushin, B. Frois, J. Zhao, H. Postma, Yannis K. Semertzidis, J. Pyrlik, N. de Botton, Aina Yañez, J. Saborido, M. Lamanna, G.S. Mutchler, R. van Dantzig, L. Betev, B. Neganov, T. O. Niinikoski, B. E. Bonner, Etienne Burtin, S. E. Rock, Regine Willumeit, I. Sabo, A. Dyring, J.A. Buchanan, Sergey M. Sergeev, V. G. Krivokhijine, Rudiger Voss, J. S. McCarthy, G. van Middelkoop, S. Bültmann, E. Arik, C. A. Heusch, P. Shanahan, E. P. Sichtermann, S. Platchkov, David Miller, J. Lichtenstadt, L. Naumann, Cristino Pérez, M. K. Ballintijn, G.I. Smirnov, T. Hasegawa, T. Layda, C. Dulya, A. Kishi, Patrick Hautle, J. M. Le Goff, A. Rosado, F. Lehar, Ricardo Piegaia, G. Bardin, M. Giorgi, Shafqat Ahmad, A. de Lesquen, F. Sever, Donal Day, R. E. Segel, E. Gülmez, E. M. Kabuß, D. Fasching, S. Lopez-Ponte, T. Pussieux, D. Krämer, A. Sandacz, W. Wislicki, A. Steinmetz, Alan D. Martin, F. Marie, I. A. Golutvin, Ulrich Landgraf, W. Thiel, M. Litmaath, M. Velasco, O. Rondon, S. Eichblatt, M. D. Corcoran, Günter Baum, J. E.J. Oberski, P. Berglund, T. Gaussiran, E. von Goeler, A. Staude, Aldo Penzo, J. Cranshaw, N. Zamiatin, T. J. Ketel, Shoji Okumi, L. Klostermann, R. Seitz, B. Badelek, C. Fernandez, N. Hayashi, R. Birsa, M. Rodriguez, F. Perrot-Kunne, A. Karev, Lawrence Pinsky, Kunikazu Mori, J. C. Faivre, G. Igo, K. Medved, Andrés Gómez, J. A. Garzon, Franco Bradamante, P. Schiavon, Y. Kisselev, M. de Jong, K. P. Schüler, S. Dhawan, and (Astro)-Particles Physics

Subjects
Physics, Nuclear and High Energy Physics, Polarization rotator, Absorption spectroscopy, Scattering, business.industry, FOS: Physical sciences, DYNAMIC NUCLEAR-POLARIZATION, TARGET, Polarization (waves), law.invention, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Optics, Deuterium, law, Nuclear Experiment (nucl-ex), Atomic physics, Detectors and Experimental Techniques, business, Electron paramagnetic resonance, Nuclear Experiment, Instrumentation, Frequency modulation, Microwave
Abstract

We report a large enhancement of 1.7 in deuteron polarization up to values of 0.6 due to frequency modulation of the polarizing microwaves in a two liters polarized target using the method of dynamic nuclear polarization. This target was used during a deep inelastic polarized muon-deuteron scattering experiment at CERN. Measurements of the electron paramagnetic resonance absorption spectra show that frequency modulation gives rise to additional microwave absorption in the spectral wings. Although these results are not understood theoretically, they may provide a useful testing ground for the deeper understanding of dynamic nuclear polarization., 10 pages, including the figures coming in uuencoded compressed tar files in poltar.uu, which also brings cernart.sty and crna12.sty files needed

Published
1995
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14. A new measurement of the spin-dependent structure function $g_{1}(x)$ of the deuteron

Author

T. Kageya, A. Staude, L. Naumann, T. Pussieux, C. Dulya, C. A. Heusch, D. Peshekhonov, E. Arik, H. Postma, Ricardo Piegaia, Cristino Pérez, S. Rock, S. K. Dhawan, Iskender Atilla Reyhancan, M. Giorgi, S. Ishimoto, U. Stiegler, L. Klostermann, P. Schiavon, T. O. Niinikoski, T. J. Ketel, A. Nagaitsev, S. Lopez-Ponte, N. de Botton, Abhay Deshpande, E. P. Sichtermann, A. Steinmetz, L. Betev, M. Lamanna, E. Rondio, R. van Dantzig, David Miller, P. Shanahan, M. Plo, H. Stuhrmann, A. Ogawa, G.I. Smirnov, R. Granier de Cassagnac, H. J. Kessler, Roland Windmolders, J. M. Le Goff, M. Clocchiatti, M. K. Ballintijn, A. Arvidson, J. Lichtenstadt, S. Platchkov, G. K. Mallot, S. Eichblatt, J. Kyynäräinen, T. Hasegawa, J. Nassalski, Yu. Kisselev, M. Rodriguez, I. Sabo, Patrick Hautle, B. E. Bonner, A. Karev, F. Marie, R.E. Segel, I.A. Savin, V. G. Krivokhijine, Michal Szleper, A. Kishi, E. M. Kabuß, G. Igo, Alan D. Martin, J. E.J. Oberski, C. S. Özben, R. Seitz, Jay Roberts, M. Grosse Perdekamp, T. Çuhadar, Rudiger Voss, G. Bardin, B. W. Mayes, J. Pretz, S. Bültmann, J. A. Garzon, Franco Bradamante, Takahiro Iwata, J. Zhao, E. Burtin, Wojciech Wislicki, E. Gülmez, A. Magnon, J. Cranshaw, G. Gracia, D. Fasching, J. Saborido, A. Sandacz, Anna Zanetti, R. Birsa, F. Feinstein, Alessandro Bressan, J. Martino, D. von Harrach, Donald Crabb, P. Björkholm, C. Cavata, Yannis K. Semertzidis, J. Pyrlik, Kunikazu Mori, Naoaki Horikawa, Regine Willumeit, C. A. Whitten, Mayda Velasco, Lawrence Pinsky, K. Medved, J. S. McCarthy, A. Dyring, F. Lehar, A. Witzmann, G. van Middelkoop, Aldo Penzo, D. L. Adams, D. Pose, Ulrich Landgraf, A. de Lesquen, B. Badelek, C. Fernandez, N. Hayashi, A. Rijllart, Bernardo Adeva, M. Litmaath, Günter Baum, P. Berglund, E. von Goeler, B. Frois, Roy Weinstein, D. Krämer, Krzysztof Kurek, N. De Groot, T. Matsuda, M. Lowe, J. Vogt, J. H. Moromisato, Vernon W. Hughes, S. Dalla Torre, F. Tessarotto, F. Perrot-Kunne, W. Kröger, D., Adam, B., Adeva, E., Arik, A., Arvidson, B., Badelek, M. K., Ballintijn, G., Bardin, G., Baum, P., Berglund, L., Betev, Birsa, Renato, P., Björkholm, B. E., Bonner, N., de Botton, Bradamante, Franco, Bressan, Andrea, S., Bültmann, E., Burtin, C., Cavata, M., Clocchiatti, D., Crabb, J., Cranshaw, T., Çuhadar, DALLA TORRE, Silvia, R., van Dantzig, A., Deshpande, S., Dhawan, C., Dulya, A., Dyring, S., Eichblatt, D., Fasching, F., Feinstein, C., Fernandez, B., Froi, J. A., Garzon, Giorgi, Marcello, E., von Goeler, G., Gracia, R., Granier de Cassagnac, N., de Groot, M., Grosse Perdekamp, E., Gülmez, D., von Harrach, T., Hasegawa, P., Hautle, N., Hayashi, C. A., Heusch, N., Horikawa, V. W., Hughe, G., Igo, S., Ishimoto, T., Iwata, E. M., Kabuß, T., Kageya, A., Karev, H. J., Kessler, T. J., Ketel, A., Kishi, Kisselev, Y. u., L., Klostermann, D., Krämer, V., Krivokhijine, W., Kröger, K., Kurek, J., Kyynäräinen, M., Lamanna, U., Landgraf, J. M., Le Goff, F., Lehar, A., de Lesquen, J., Lichtenstadt, M., Litmaath, S., Lopez Ponte, M., Lowe, A., Magnon, G. K., Mallot, F., Marie, Martin, Anna, J., Martino, T., Matsuda, B., Maye, J. S., Mccarthy, K., Medved, G., van Middelkoop, D., Miller, K., Mori, J., Moromisato, A., Nagaitsev, J., Nassalski, L., Naumann, T. O., Niinikoski, J. E. J., Oberski, A., Ogawa, C., Ozben, A., Penzo, C., Perez, F., Perrot Kunne, D., Peshekhonov, R., Piegaia, L., Pinsky, S., Platchkov, M., Plo, D., Pose, H., Postma, J., Pretz, T., Pussieux, J., Pyrlik, I., Reyhancan, A., Rijllart, J. B., Robert, S., Rock, M., Rodriguez, E., Rondio, I., Sabo, J., Saborido, A., Sandacz, I., Savin, Schiavon, Paolo, R., Segel, R., Seitz, Y., Semertzidi, P., Shanahan, E. P., Sichtermann, G. I., Smirnov, A., Staude, A., Steinmetz, U., Stiegler, H., Stuhrmann, M., Szleper, F., Tessarotto, M., Velasco, J., Vogt, R., Vo, R., Weinstein, C., Whitten, R., Windmolder, R., Willumeit, W., Wislicki, A., Witzmann, Zanetti, ANNA MARIA, and J., Zhao

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), Muon, Structure function, Deep inelastic scattering, deep inelastic scattering, spin sum rule, SMC experiment, Standard deviation, Nuclear physics, Deuterium, Sum rule in quantum mechanics, Particle Physics - Experiment, Spin-½
Abstract

We present a new measurement of the spin-dependent structure function g 1 d of the deuteron in deep inelastic scattering of 190 GeV polarised muons on polarised deuterons, in the kinematic range 0.003 x 2 Q 2 2 . This structure function is found to be negative at small x . The first moment Γ 1 d =∫ 0 1 g 1 d d x evaluated at Q 0 2 = 10 GeV 2 is 0.034 ± 0.009 (stat.) ± 0.006 (syst.). This value is below the Ellis-Jaffe sum rule prediction by three standard deviations. Using our earlier determination of Γ 1 p , we obtain Γ 1 p − Γ 1 n = 0.199 ± 0.038 which agrees with the Bjorken sum rule.

Published
1995
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