Effects of transversity in deep-inelastic scattering by polarized protons

Airapetian, A.; Akopov, N.; Akopov, Z.; Aschenauer, E.; Augustyniak, W.; Avakian, R.; Avetissian, A.; Avetisyan, E.; Bacchetta, A.; Belostotski, S.; Bianchi, N.; Blok, H.; Borissov, A.; Bowles, J.; Brodsky, I.; Bryzgalov, V.; Burns, J.; Capiluppi, Marco; Capitani, G.; Cisbani, E.; Ciullo, Giuseppe; Contalbrigo, Marco; Ferretti, Paola; Deconinck, W.; Leo, R. D.; Nardo, L. D.; Sanctis, E. D.; Diefenthaler, M.; Nezza, P. D.; Düren, M.; Ehrenfried, M.; Elbakian, G.; Ellinghaus, F.; Elschenbroich, U.; Fabbri, R.; Fantoni, A.; Felawka, L.; Frullani, S.; Gabbert, D.; Gapienko, G.; Gapienko, V.; Garibaldi, F.; Gharibyan, V.; Giordano, Francesca; Gliske, S.; Golembiovskaya, M.; Hadjidakis, C.; Hartig, M.; Hasch, D.; Hill, G.; Hillenbrand, A.; Hoek, M.; Holler, Y.; Hristova, I.; Imazu, Y.; Ivanilov, A.; Jackson, H.; Jo, H.; Joosten, S.; Kaiser, R.; Karyan, G.; Keri, T.; Kinney, E.; Kisselev, A.; Kobayashi, N.; Korotkov, V.; Kozlov, V.; Kravchenko, P.; Lagamba, L.; Lamb, R.; Lapikás, L.; Lehmann, I.; Lenisa, Paolo; Linden Levy, L.; Ruiz, A. L.; Lorenzon, W.; Lu, X.; Lu, X.; Ma, B.; Mahon, D.; Makins, N.; Manaenkov, S.; Manfré, L.; Mao, Y.; Marianski, B.; de la Ossa, A. M.; Marukyan, H.; Miller, C.; Miyachi, Y.; Movsisyan, A.; Murray, M.; Mussgiller, A.; Nappi, E.; Naryshkin, Y.; Nass, A.; Negodaev, M.; Nowak, W.; Pappalardo, Luciano Libero; Perez Benito, R.; Pickert, N.; Raithel, M.; Reimer, P.; Reolon, A.; Riedl, C.; Rith, K.; Rosner, G.; Rostomyan, A.; Rubin, J.; Ryckbosch, D.; Salomatin, Y.; Sanftl, F.; Schäfer, A.; Schnell, G.; Seitz, B.; Shibata, T.; Shutov, V.; Stancari, Michelle Dawn; Statera, Marco; Steffens, E.; Steijger, J.; Stenzel, H.; Stewart, J.; Stinzing, F.; Taroian, S.; Terkulov, A.; Trzcinski, A.; Tytgat, M.; der Nat, P. v.; Haarlem, Y. V.; Hulse, C. V.; Veretennikov, D.; Vikhrov, V.; Vilardi, I.; Vogel, C.; Wang, S.; Yaschenko, S.; Ye, H.; Ye, Z.; Yen, S.; Yu, W.; Zeiler, D.; Zihlmann, B.; Zupranski, P.

doi:10.1016/j.physletb.2010.08.012

Single-spin asymmetries for pions and charged kaons are measured in semi-inclusive deep-inelastic scattering of positrons and electrons off a transversely nuclear-polarized hydrogen target. The dependence of the cross section on the azimuthal angles of the target polarization ([phi]S) and the produced hadron ([phi]) is found to have a substantial sin([phi]+[phi]S) modulation for the production of [pi]+, [pi]- and K+. This Fourier component can be interpreted in terms of non-zero transversity distribution functions and non-zero favored and disfavored Collins fragmentation functions with opposite sign. For [pi]0 and K- production the amplitude of this Fourier component is consistent with zero.

Scheda prodotto non validato

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Titolo:	Effects of transversity in deep-inelastic scattering by polarized protons
Autori:	A. Airapetian N. Akopov Z. Akopov E. Aschenauer W. Augustyniak R. Avakian A. Avetissian E. Avetisyan A. Bacchetta S. Belostotski N. Bianchi H. Blok A. Borissov J. Bowles I. Brodsky V. Bryzgalov J. Burns CAPILUPPI, Marco G. Capitani E. Cisbani CIULLO, Giuseppe CONTALBRIGO, Marco FERRETTI, Paola W. Deconinck R. D. Leo L. D. Nardo E. D. Sanctis M. Diefenthaler P. D. Nezza M. Düren M. Ehrenfried G. Elbakian F. Ellinghaus U. Elschenbroich R. Fabbri A. Fantoni L. Felawka S. Frullani D. Gabbert G. Gapienko V. Gapienko F. Garibaldi V. Gharibyan GIORDANO, Francesca S. Gliske M. Golembiovskaya C. Hadjidakis M. Hartig D. Hasch G. Hill A. Hillenbrand M. Hoek Y. Holler I. Hristova Y. Imazu A. Ivanilov H. Jackson H. Jo S. Joosten R. Kaiser G. Karyan T. Keri E. Kinney A. Kisselev N. Kobayashi V. Korotkov V. Kozlov P. Kravchenko L. Lagamba R. Lamb L. Lapikás I. Lehmann LENISA, Paolo L. Linden Levy A. L. Ruiz W. Lorenzon X. Lu X. Lu B. Ma D. Mahon N. Makins S. Manaenkov L. Manfré Y. Mao B. Marianski A. M. de la Ossa H. Marukyan C. Miller Y. Miyachi A. Movsisyan M. Murray A. Mussgiller E. Nappi Y. Naryshkin A. Nass M. Negodaev W. Nowak PAPPALARDO, Luciano Libero R. Perez Benito N. Pickert M. Raithel P. Reimer A. Reolon C. Riedl K. Rith G. Rosner A. Rostomyan J. Rubin D. Ryckbosch Y. Salomatin F. Sanftl A. Schäfer G. Schnell B. Seitz T. Shibata V. Shutov STANCARI, Michelle Dawn STATERA, Marco E. Steffens J. Steijger H. Stenzel J. Stewart F. Stinzing S. Taroian A. Terkulov A. Trzcinski M. Tytgat P. v. der Nat Y. V. Haarlem C. V. Hulse D. Veretennikov V. Vikhrov I. Vilardi C. Vogel S. Wang S. Yaschenko H. Ye Z. Ye S. Yen W. Yu D. Zeiler B. Zihlmann P. Zupranski mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2010
Rivista:	PHYSICS LETTERS. SECTION B
Abstract:	Single-spin asymmetries for pions and charged kaons are measured in semi-inclusive deep-inelastic scattering of positrons and electrons off a transversely nuclear-polarized hydrogen target. The dependence of the cross section on the azimuthal angles of the target polarization ([phi]S) and the produced hadron ([phi]) is found to have a substantial sin([phi]+[phi]S) modulation for the production of [pi]+, [pi]- and K+. This Fourier component can be interpreted in terms of non-zero transversity distribution functions and non-zero favored and disfavored Collins fragmentation functions with opposite sign. For [pi]0 and K- production the amplitude of this Fourier component is consistent with zero.
Handle:	http://hdl.handle.net/11392/1412314
Appare nelle tipologie:	03.1 Articolo su rivista

File in questo prodotto:

Non ci sono file associati a questo prodotto.

Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/11392/1412314

Citazioni

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

CINECA IRIS Institutional Research Information System

Scheda prodotto non validato

File in questo prodotto: