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25 results on '"electroproduction [pi]"'

1. Update of inclusive cross sections of single and pairs of identified light charged hadrons

Author

Belle Collaboration, Seidl, R., Adachi, I., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Badhrees, I., Behera, P., Belous, K., Bennett, J., Bhuyan, B., Biswal, J., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, M.-C., Chekelian, V., Chen, A., Chilikin, K., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., De Nardo, G., Di Capua, F., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fulsom, B. G., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Hayasaka, K., Hayashii, H., Hou, W.-S., Huang, K., Inami, K., Ishikawa, A., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jia, S., Jin, Y., Joo, K. K., Karyan, G., Kim, D. Y., Kim, S. H., Kodyš, P., Korpar, S., Križan, P., Kroeger, R., Krokovny, P., Kuzmin, A., Kwon, Y.-J., Lee, S. C., Li, Y. B., Li Gioi, L., Libby, J., Lieret, K., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Mizuk, R., Mussa, R., Nakao, M., Nayak, M., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, S., Ono, H., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, S.-H., Patra, S., Paul, S., Pedlar, T. K., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Ritter, M., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Sevior, M. E., Shapkin, M., Shebalin, V., Shiu, J.-G., Shwartz, B., Solovieva, E., Starič, M., Stottler, Z. S., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Usov, Y., Van Tonder, R., Varner, G., Vorobyev, V., Vossen, A., Wang, C. H., Wang, M.-Z., Wang, P., Watanuki, S., Won, E., Xu, X., Yang, S. B., Yelton, J., Zhang, Z. P., Zhilich, V., Zhukova, V., European Commission, Belle, Collaboration, Campajola, M., De Nardo, G., Di Capua, F., Merola, M., Pardi, S., Russo, G., and Et, Al.

Subjects
pair production [K], data analysis method, Hadron, measured [channel cross section], Belle, FOS: Physical sciences, annihilation [electron positron], Radiation, transverse momentum, 01 natural sciences, fragmentation function, Computer Science::Digital Libraries, High Energy Physics - Experiment, energy dependence, Nuclear physics, High Energy Physics - Experiment (hep-ex), KEKB, Pion, KEK-B, fragmentation, 0103 physical sciences, ddc:530, inclusive reaction [electron positron], 010306 general physics, initial state, Nuclear Experiment, electroproduction [dihadron], electroproduction [pi], Physics, 010308 nuclear & particles physics, Detector, initial-state interaction [radiation], 16. Peace & justice, ddc, pair production [pi], electroproduction [K], Transverse momentum, fractional, electroproduction [Upsilon(10570)], colliding beams [electron positron], electroproduction [p], High Energy Physics::Experiment, experimental results
Abstract

We report new measurements of the production cross sections of pairs of charged pions and kaons as a function of their fractional energies using various fractional-energy definitions. Two different fractional-energy definitions were used and compared to the conventional fractional-energy definition reported previously. The new variables aim at either identifying dihadron cross sections in terms of single-hadron fragmentation functions, or to provide a means of characterizing the transverse momentum created in the fragmentation process. The results were obtained applying the updated initial-state radiation correction used in other recent Belle publications on light-hadron production cross sections. In addition, production cross sections of single charged pions, kaons, and protons were also updated using this initial-state radiation correction. The cross sections are obtained from a $558\,{\rm fb}^{-1}$ data sample collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider., Comment: 12 pages, 9 figures, submitted to PRD

Published
2020

2. Recent results on TMDs from the HERMES experiment

Author

Pappalardo, L. L. and HERMES Collaboration

Subjects
HERMES experiment, Particle physics, QC1-999, media_common.quotation_subject, Hadron, HERMES, Electron, transverse momentum dependence, Asymmetry, x-dependence, Nuclear physics, Momentum, symbols.namesake, Feynman diagram, ddc:530, Nuclear Experiment, 26.7 GeV, electroproduction [pi], transverse momentum [hadron], media_common, Physics, charge dependence, transverse [polarized target], Transverse plane, DESY HERA Stor, Amplitude, asymmetry [angular distribution], electroproduction [K], symbols, High Energy Physics::Experiment, inclusive reaction [electron p], asymmetry [spin], Particle Physics - Experiment, experimental results
Abstract

Single-spin azimuthal asymmetries were extracted at HERMES in inclusive electroproduction of charged hadrons from transversely polarized protons. The asymmetries were studied as a function of the transverse hadron momentum P T relative to the beam direction, and the Feynman variable x F . The asymmetry amplitudes are positive for π+ and K + , slightly negative for π− and consistent with zero for K − . Especially large asymmetries are observed for two small subsamples of events, where also the scattered electron was recorded, revealing important contributions from TMDs.

Published
2014

3. Azimuthal distributions of charged hadrons, pions, and kaons produced in deep-inelastic scattering off unpolarized protons and deuterons

Author

A. Trzcinski, J. Burns, N. C. R. Makins, S. Frullani, A. Hillenbrand, Y. Imazu, K. Rith, Dirk Ryckbosch, Adel Terkulov, V. A. Gapienko, A. Ivanilov, Y. Holler, S. Yen, G. Gapienko, J. Bowles, J. G. Rubin, David Mahon, M. Golembiovskaya, Ralf Kaiser, F. Sanftl, I. Lehmann, Michael Tytgat, E. Cisbani, Andreas Schäfer, A. Movsisyan, C. A. Miller, W. Yu, F. Giordano, Wouter Deconinck, V. Zagrebelnyy, B. Marianski, B. Zihlmann, G. Ciullo, W. Augustyniak, G. Gavrilov, Alexander Borissov, H. E. Jackson, C. Van Hulse, V. G. Krivokhijine, H. P. Blok, T. A. Shibata, M. Statera, R.O. Avakian, A. Airapetian, M. Capiluppi, Arne Vandenbroucke, M. Stancari, Alessandra Fantoni, Y. Naryshkin, W.-D. Nowak, Shan Wang, Wolfgang Lorenzon, D. Zeiler, E. De Sanctis, Franco Garibaldi, P. F. Dalpiaz, L. Manfré, P. E. Reimer, M. Hoek, Ivana Hristova, A. Martinez de la Ossa, A. López Ruiz, D. Veretennikov, Paolo Lenisa, S. Yaschenko, S. Joosten, M. Negodaev, I. Vilardi, V. A. Korotkov, Eugenio Nappi, A. Kisselev, V. Kozlov, Luciano Pappalardo, Y. Van Haarlem, A. Rostomyan, A. R. Reolon, A. Avetissian, Y. J. Mao, P. Kravchenko, L. Lapikás, T. Keri, M. Diefenthaler, A. Nass, H. S. Jo, F. Stinzing, J. Stewart, G. Schnell, M. Contalbrigo, E. Avetisyan, G. Elbakian, S. I. Manaenkov, Martin Raithel, E. C. Aschenauer, R. Perez-Benito, V. Vikhrov, M. Hartig, A. Petrosyan, P. Di Nezza, C. Riedl, Morgan Murray, B. Seitz, D. Hasch, K. P. Schüler, P. Zupranski, G. Rosner, R. Truty, N. Akopov, S. Belostotski, G. Karyan, V. Bryzgalov, Frank Ellinghaus, E. R. Kinney, Y. Salomatin, B. Q. Ma, H. Marukyan, R. De Leo, Stephen V. Gliske, L. Felawka, L. Lagamba, Z. Akopov, L. De Nardo, Zhenyu Ye, V. Gharibyan, J. J. M. Steijger, Michael Düren, Cynthia Marie Hadjidakis, and Y. Miyachi

Subjects
Drell-Yan process, HERMES experiment, generalized parton distribution, Nuclear Theory, Hadron, HERMES, Parton, 01 natural sciences, multiple production [charged particle], High Energy Physics - Experiment, HARD-SCATTERING, High Energy Physics - Experiment (hep-ex), semi-inclusive reaction [deep inelastic scattering], transverse momentum [parton], HERMES EXPERIMENT, deep inelastic scattering [positron p], Collins, Nuclear Experiment (nucl-ex), Nuclear Experiment, electroproduction [pi], Physics, FINAL-STATE INTERACTIONS, ANGULAR-DISTRIBUTIONS, PARTON-MODEL, DUAL RADIATOR RICH, angular dependence, modulation, DESY HERA Stor, SPIN PRODUCTION ASYMMETRIES, Nucleon, Quark, Nuclear and High Energy Physics, Particle physics, DRELL-YAN, FOS: Physical sciences, Nuclear physics, angular distribution [charged particle], Pion, 0103 physical sciences, ddc:530, PHYSICS EVENT GENERATION, TRANSVERSE-MOMENTUM, 010306 general physics, deep inelastic scattering [lepton deuteron], 27.6 GeV, 010308 nuclear & particles physics, Scattering, High Energy Physics::Phenomenology, polarization [quark], Deep inelastic scattering, Physics and Astronomy, electroproduction [K], deep inelastic scattering [electron p], High Energy Physics::Experiment, experimental results
Abstract

The azimuthal cos{\phi} and cos2{\phi} modulations of the distribution of hadrons produced in unpolarized semi-inclusive deep-inelastic scattering of electrons and positrons off hydrogen and deuterium targets have been measured in the HERMES experiment. For the first time these modulations were determined in a four-dimensional kinematic space for positively and negatively charged pions and kaons separately, as well as for unidentified hadrons. These azimuthal dependences are sensitive to the transverse motion and polarization of the quarks within the nucleon via, e.g., the Cahn, Boer-Mulders and Collins effects.

Published
2013

4. Production of charged pions, kaons and protons in e+e- annihilations into hadrons at sqrt{s} = 10.54 GeV

Author

Lees, J. P., Poireau, V., Lee, M., Patrignani, C., Robutti, E., Bhuyan, B., Prasad, V., Morii, M., Adametz, A., Uwer, U., Lacker, H. M., Dauncey, P. D., Mallik, U., Lynch, G., Chen, C., Cochran, J., Meyer, W. T., Prell, S., Rubin, A. E., Gritsan, A. V., Arnaud, N., Davier, M., Derkach, D., Grosdidier, G., Koch, H., Le Diberder, F., Lutz, A. M., Malaescu, B., Roudeau, P., Stocchi, A., Wormser, G., Lange, D. J., Wright, D. M., Coleman, J. P., Fry, J. R., Schroeder, T., Gabathuler, E., Hutchcroft, D. E., Payne, D. J., Touramanis, C., Bevan, A. J., Di Lodovico, F., Sacco, R., Cowan, G., Bougher, J., Brown, D. N., Hearty, C., Davis, C. L., Denig, A. G., Fritsch, M., Gradl, W., Griessinger, K., Hafner, A., Prencipe, E., Barlow, R. J., Lafferty, G. D., Behn, E., Mattison, T. S., Cenci, R., Hamilton, B., Jawahery, A., Roberts, D. A., Cowan, R., Dujmic, D., Sciolla, G., Cheaib, R., Patel, P. M., Robertson, S. H., McKenna, J. A., Biassoni, P., Neri, N., Palombo, F., Cremaldi, L., Godang, R., Sonnek, P., Summers, D. J., Nguyen, X., Simard, M., Taras, P., So, R. Y., De Nardo, G., Monorchio, D., Onorato, G., Sciacca, C., Martinelli, M., Raven, G., Jessop, C. P., LoSecco, J. M., Honscheid, K., Kass, R., Khan, A., Brau, J., Frey, R., Sinev, N. B., Strom, D., Torrence, E., Feltresi, E., Margoni, M., Morandin, M., Posocco, M., Rotondo, M., Blinov, V. E., Simi, G., Simonetto, F., Stroili, R., Akar, S., Ben-Haim, E., Bomben, M., Bonneaud, G. R., Briand, H., Calderini, G., Chauveau, J., Tisserand, V., Buzykaev, A. R., Leruste, Ph., Marchiori, G., Ocariz, J., Sitt, S., Biasini, M., Manoni, E., Pacetti, S., Rossi, A., Angelini, C., Batignani, G., Druzhinin, V. P., Bettarini, S., Carpinelli, M., Casarosa, G., Cervelli, A., Forti, F., Giorgi, M. A., Lusiani, A., Oberhof, B., Paoloni, E., Perez, A., Golubev, V. B., Rizzo, G., Walsh, J. J., Lopes Pegna, D., Olsen, J., Smith, A. J. S., Faccini, R., Ferrarotto, F., Ferroni, F., Gaspero, M., Li Gioi, L., Kravchenko, E. A., Piredda, G., Bünger, C., Christ, S., Grünberg, O., Hartmann, T., Leddig, T., Schröder, H., Voß, C., Waldi, R., Adye, T., Onuchin, A. P., Olaiya, E. O., Wilson, F. F., Emery, S., Hamel de Monchenault, G., Vasseur, G., Yèche, Ch., Anulli, F., Aston, D., Bard, D. J., Benitez, J. F., Serednyakov, S. I., Cartaro, C., Convery, M. R., Dorfan, J., Dubois-Felsmann, G. P., Dunwoodie, W., Ebert, M., Field, R. C., Fulsom, B. G., Gabareen, A. M., Graham, M. T., Skovpen, Yu. I., Haas, T., Hadig, T., Hast, C., Innes, W. R., Kim, P., Kocian, M. L., Leith, D. W. G. S., Lewis, P., Lindemann, D., Lindquist, B., Solodov, E. P., Luitz, S., Luth, V., Lynch, H. L., MacFarlane, D. B., Muller, D. R., Neal, H., Nelson, S., Perl, M., Pulliam, T., Ratcliff, B. N., Todyshev, K. Yu., Roodman, A., Salnikov, A. A., Schindler, R. H., Schwiening, J., Snyder, A., Su, D., Sullivan, M. K., Va’vra, J., Wagner, A. P., Wang, W. F., Yushkov, A. N., Wisniewski, W. J., Wittgen, M., Wright, D. H., Wulsin, H. W., Ziegler, V., Park, W., Purohit, M. V., White, R. M., Wilson, J. R., Randle-Conde, A., Grauges, E., Kirkby, D., Sekula, S. J., Bellis, M., Burchat, P. R., Miyashita, T. S., Puccio, E. M. T., Alam, M. S., Ernst, J. A., Gorodeisky, R., Guttman, N., Peimer, D. R., Lankford, A. J., Soffer, A., Spanier, S. M., Ritchie, J. L., Ruland, A. M., Schwitters, R. F., Wray, B. C., Izen, J. M., Lou, X. C., Bianchi, F., De Mori, F., Mandelkern, M., Filippi, A., Gamba, D., Zambito, S., Lanceri, L., Vitale, L., Martinez-Vidal, F., Oyanguren, A., Villanueva-Perez, P., Ahmed, H., Albert, J., Buchanan, C., Banerjee, Sw., Bernlochner, F. U., Choi, H. H. F., King, G. J., Kowalewski, R., Lewczuk, M. J., Lueck, T., Nugent, I. M., Roney, J. M., Sobie, R. J., Hartfiel, B., Tasneem, N., Gershon, T. J., Harrison, P. F., Latham, T. E., Band, H. R., Dasu, S., Pan, Y., Prepost, R., Wu, S. L., Dey, B., Gary, J. W., Long, O., Vitug, G. M., Campagnari, C., Palano, A., Franco Sevilla, M., Hong, T. M., Kovalskyi, D., Richman, J. D., West, C. A., Eisner, A. M., Lockman, W. S., Martinez, A. J., Schumm, B. A., Seiden, A., Eigen, G., Chao, D. S., Cheng, C. H., Echenard, B., Flood, K. T., Hitlin, D. G., Ongmongkolkul, P., Porter, F. C., Andreassen, R., Huard, Z., Meadows, B. T., Stugu, B., Sokoloff, M. D., Sun, L., Bloom, P. C., Ford, W. T., Gaz, A., Nauenberg, U., Smith, J. G., Wagner, S. R., Ayad, R., Toki, W. H., Spaan, B., Schubert, K. R., Schwierz, R., Bernard, D., Verderi, M., Playfer, S., Bettoni, D., Bozzi, C., Calabrese, R., Cibinetto, G., Kerth, L. T., Fioravanti, E., Garzia, I., Luppi, E., Piemontese, L., Santoro, V., Baldini-Ferroli, R., Calcaterra, A., de Sangro, R., Finocchiaro, G., Martellotti, S., Kolomensky, Yu. G., Patteri, P., Peruzzi, I. M., Piccolo, M., Rama, M., Zallo, A., Contri, R., Guido, E., Lo Vetere, M., Monge, M. R., Passaggio, S., Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), BABAR, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)

Subjects
model [hadronization], scaling, High Energy Physics::Phenomenology, FOS: Physical sciences, validity test [quantum chromodynamics], annihilation [electron positron], inclusive production [charged particle], SLAC PEP Stor, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Cherenkov counter, drift chamber, electroproduction [K], measured [differential cross section], +quark+antiquark%22">electron positron --> quark antiquark, pair production [quark], BaBar, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], electroproduction [p], ddc:530, 10.54 GeV-cms, High Energy Physics::Experiment, electroproduction [pi], experimental results
Abstract

Inclusive production cross sections of $\pi^\pm$, $K^\pm$ and $p\bar{p}$ per hadronic $e^+e^-$ annihilation event in $e^+e^-$ are measured at a center-of-mass energy of 10.54 GeV, using a relatively small sample of very high quality data from the BaBar experiment at the PEP-II $B$-factory at the SLAC National Accelerator Laboratory. The drift chamber and Cherenkov detector provide clean samples of identified $\pi^\pm$, $K^\pm$ and $p\bar{p}$ over a wide range of momenta. Since the center-of-mass energy is below the threshold to produce a $B\bar{B}$ pair, with $B$ a bottom-quark meson, these data represent a pure $e^+e^- \rightarrow q\bar{q}$ sample with four quark flavors, and are used to test QCD predictions and hadronization models. Combined with measurements at other energies, in particular at the $Z^0$ resonance, they also provide precise constraints on the scaling properties of the hadronization process over a wide energy range., Comment: 28 pages, 17 postscript figures

Published
2013
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5. Exclusive dipion production

Author

Tomaszewska, Justyna and ZEUS Collaboration

Subjects
form factor [pi], Physics, Nuclear Theory, ZEUS, High Energy Physics::Experiment, ratio [cross section], Nuclear Experiment, electromagnetic [form factor], 7. Clean energy, electroproduction [pi]
Abstract

The exclusive electroproduction of two pions in the mass range \unit{0.4 $ < $ M$_{\pi \pi} < $ 2.5}{\GeV} Ahas been studied with the ZEUS detector at HERA using an integrated luminosity of \unit{82}{\invpb}. AThe two-pion invariant-mass distribution is interpreted in terms of the pion electromagnetic form factor, A$|F(M_{\pi \pi})|$, assuming that the studied mass range includes Athe contributions of the $\rho$, $\rho'$ and $\rho"$ vector-meson states., Proc. of DIS 2012, 527 - 530; DESY-PROC-2012-02; ISSN 1435-8077

Published
2013
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6. Beam-helicity asymmetry in associated electroproduction of real photons $ep \to e\gamma \pi N$ in the $\Delta$-resonance region

Author

The HERMES Collaboration, Airapetian, A., Akopov, N., Aschenauer, E. C., Augustyniak, W., Avakian, R., Avetissian, A., Avetisyan, E., Blok, H. P., Böttcher, H., Borissov, A., Bowles, J., Brodski, I., Bryzgalov, V., Burns, J., Capitani, G. P., Cisbani, E., Ciullo, G., Contalbrigo, M., Dalpiaz, P. F., Deconinck, W., De Leo, R., De Sanctis, E., Diefenthaler, M., Di Nezza, P., Düren, M., Ehrenfried, M., Elbakian, G., Ellinghaus, F., Etzelmüller, E., Fabbri, R., Frullani, S., Gapienko, G., Gapienko, V., García, J. Garay, Garibaldi, F., Gavrilov, G., Gharibyan, V., Giordano, F., Gliske, S., Hartig, M., Hasch, D., Holler, Y., Hristova, I., Ivanilov, A., Jackson, H. E., Joosten, S., Kaiser, R., Karyan, G., Keri, T., Kinney, E., Kisselev, A., Korotkov, V., Kozlov, V., Kravchenko, P., Krivokhijine, V. G., Lagamba, L., Lapikás, L., Lehmann, I., Lenisa, P., Lorenzon, W., Lu, X. -G., Ma, B. -Q., Mahon, D., Makins, N. C. R., Manaenkov, S. I., Mao, Y., Marianski, B., Marukyan, H., Miller, C. A., Miyachi, Y., Movsisyan, A., Muccifora, V., Murray, M., Mussgiller, A., Naryshkin, Y., Nass, A., Negodaev, M., Nowak, W. -D., Pappalardo, L. L., Perez-Benito, R., Petrosyan, A., Reimer, P. E., Reolon, A. R., Riedl, C., Rith, K., Rosner, G., Rostomyan, A., Rubin, J., Ryckbosch, D., Salomatin, Y., Schäfer, A., Schnell, G., Seitz, B., Shibata, T. -A., Stahl, M., Statera, M., Steffens, E., Steijger, J. J. M., Stewart, J., Stinzing, F., Taroian, S., Terkulov, A., Truty, R., Trzcinski, A., Tytgat, M., Van Haarlem, Y., Van Hulse, C., Vikhrov, V., Vilardi, I., Wang, S., Yaschenko, S., Ye, Z., Yen, S., Zagrebelnyy, V., Zihlmann, B., and Zupranski, P.

Subjects
internal [target], 27.6 GeV, +nucleon+pi+electron+photon%22">positron p --> nucleon pi electron photon, scattering amplitude, HERMES, asymmetry [helicity], Delta(1232), High Energy Physics - Experiment, DESY HERA Stor, associated production [photon], interaction [positron p], Physics::Accelerator Physics, ddc:530, High Energy Physics::Experiment, Nuclear Experiment, longitudinal [polarized beam], electroproduction [pi], recoil [detector], experimental results
Abstract

The beam-helicity asymmetry in associated electroproduction of real photons, $ep\to e\gamma \pi N$, in the $\Delta$(1232)-resonance region is measured using the longitudinally polarized HERA positron beam and an unpolarized hydrogen target. Azimuthal Fourier amplitudes of this asymmetry are extracted separately for two channels, $ep\to e\gamma \pi^0 p$ and $ep\to e\gamma \pi^+ n$, from a data set collected with a recoil detector. All asymmetry amplitudes are found to be consistent with zero., Comment: 17 pages, 4 figures, (minor changes wit respect to previous arXiv version)

Published
2013

7. Flavor dependent azimuthal cosine modulations in SIDIS unpolarized cross section

Author

Giordano, Francesca, Truty, Rebecca, and HERMES Collaboration

Subjects
modulation, angular distribution [charged particle], DESY HERA Stor, semi-inclusive reaction [deep inelastic scattering], electroproduction [K], dependence [flavor], deep inelastic scattering [electron p], polarization [quark], HERMES, deep inelastic scattering [positron p], deep inelastic scattering [lepton deuteron], electroproduction [pi], experimental results
Published
2012

8. Multiplicities of charged pions and kaons from semi-inclusive deep-inelastic scattering by the proton and the deuteron

Author

N. Akopov, G. Karyan, V. A. Korotkov, Y. J. Mao, A. Trzcinski, Wouter Deconinck, Frank Ellinghaus, E. R. Kinney, A. Petrosyan, W.-D. Nowak, Andreas Mussgiller, David Mahon, J. Burns, Vitaly Shutov, H. P. Blok, G. Elbakian, L. Manfré, A. Martinez de la Ossa, P. E. Reimer, Wolfgang Lorenzon, Andreas Schäfer, C. A. Miller, Ivana Hristova, Eugenio Nappi, L. De Nardo, Alessandra Fantoni, S. Yaschenko, S. I. Manaenkov, A. Hillenbrand, Y. Imazu, L. Lagamba, M. Diefenthaler, I. Vilardi, S. Belostotski, M. Hoek, Shan Wang, B. Zihlmann, P. F. Dalpiaz, Z. Akopov, Nagao Kobayashi, Zhenyu Ye, V. Zagrebelnyy, V. Bryzgalov, F. Garibaldi, H. S. Jo, W. Augustyniak, Riccardo Fabbri, C. Van Hulse, Alexander Borissov, A. López Ruiz, D. Gabbert, M. Statera, K. Rith, V. Gharibyan, Y. Naryshkin, M. Stancari, Y. Van Haarlem, M. Capiluppi, J. Bowles, I. Brodski, D. Zeiler, C. Vogel, Y. Salomatin, A. Nass, M. Golembiovskaya, A. Rostomyan, A. R. Reolon, A. Avetissian, H. E. Jackson, Stephen V. Gliske, T. Keri, M. Contalbrigo, D. Veretennikov, V. G. Krivokhijine, B. Q. Ma, Martin Raithel, G. Gapienko, J. J. M. Steijger, E. C. Aschenauer, H. Marukyan, R. De Leo, L. Felawka, B. Marianski, Michael Düren, E. De Sanctis, C. Riedl, W. Yu, G. P. Capitani, Michael Tytgat, Adel Terkulov, M. Ehrenfried, Cynthia Marie Hadjidakis, Y. Miyachi, Paolo Lenisa, E. Cisbani, S. Joosten, T. A. Shibata, A. Kisselev, V. Kozlov, V. Gapienko, R.O. Avakian, Morgan Murray, S. Taroian, S. Yen, Luciano Pappalardo, B. Seitz, Andrey V. Izotov, Ralf Kaiser, E. Avetisyan, N. C. R. Makins, E. Steffens, G. Gavrilov, S. Frullani, Dirk Ryckbosch, R. Perez-Benito, B. Maiheu, F. Giordano, G. Ciullo, J. G. Rubin, I. Lehmann, M. Hartig, P. Di Nezza, D. Hasch, M. Negodaev, A. Airapetian, F. Stinzing, G. Schnell, A. Ivanilov, L. Lapikás, P. Kravchenko, J. Stewart, Y. Holler, P. Zupranski, G. Rosner, R. Truty, F. Sanftl, and A. Movsisyan

Subjects
HERMES experiment, AZIMUTHAL DEPENDENCE, FRAGMENTATION FUNCTIONS, Hadron, Parton, HERMES, momentum transfer dependence, 01 natural sciences, 7. Clean energy, CROSS-SECTIONS, High Energy Physics - Experiment, 13.60.-r, 13.60.Le, 13.87.Fh, 14.20.Dh, High Energy Physics - Experiment (hep-ex), semi-inclusive reaction [deep inelastic scattering], LEPTOPRODUCTION, MONTE-CARLO, deep inelastic scattering [positron p], Nuclear Experiment (nucl-ex), Nuclear Experiment, electroproduction [pi], Physics, HERA, fragmentation [quark], DESY HERA Stor, CHAMBERS, FACTORIZATION, Quark, Nuclear and High Energy Physics, Particle physics, Meson, PARTON MODEL, FOS: Physical sciences, x-dependence, Nuclear physics, Pion, 0103 physical sciences, ddc:530, 010306 general physics, deep inelastic scattering [lepton deuteron], 010308 nuclear & particles physics, 27.6 GeV, High Energy Physics::Phenomenology, ELECTROPRODUCTION, Deep inelastic scattering, multiplicity: measured [charged particle], Physics and Astronomy, electroproduction [K], deep inelastic scattering [electron p], High Energy Physics::Experiment, experimental results
Abstract

Multiplicities in semi-inclusive deep-inelastic scattering are presented for each charge state of ${\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$ and ${\mathrm{K}}^{\ifmmode\pm\else\textpm\fi{}}$ mesons. The data were collected by the HERMES experiment at the HERA storage ring using 27.6 GeV electron and positron beams incident on a hydrogen or deuterium gas target. The results are presented as a function of the kinematic quantities ${x}_{\mathrm{B}}$, ${Q}^{2}$, $z$, and ${P}_{h\ensuremath{\perp}}$. They represent a unique data set for identified hadrons that will significantly enhance our understanding of the fragmentation of quarks into final-state hadrons in deep-inelastic scattering.

Published
2012

9. Quark helicity distributions in the nucleon for up, down, and strange quarks from semi-inclusive deep-inelastic scattering

Author

Airapetian, A., Akopov, N., Avetissian, E., Marianski, B., Marukyan, H., Masoli, F., Mexner, V., Meyners, N., Mikloukho, O., Miller, C. A., Miyachi, Y., Muccifora, V., Nagaitsev, A., Bailey, P., Nappi, E., Naryshkin, Y., Nass, A., Negodaev, M., Nowak, W. D., Oganessyan, K., Ohsuga, H., Pickert, N., Potashov, S., Potterveld, D. H., Baturin, V., Raithel, M., Reggiani, D., Reimer, P. E., Reischl, A., Reolon, A. R., Riedl, C., Rith, K., Rosner, G., Rostomyan, A., Rubacek, L., Baumgarten, C., Rubin, J., Ryckbosch, D., Salomatin, Y., Sanjiev, I., Savin, I., Scarlett, C., Schafer, A., Schill, C., Schnell, G., Schuler, K. P., Beckmann, M., Schwind, A., Seele, J., Seidl, R., Seitz, B., Shanidze, R., Shearer, C., Shibata, T. A., Shutov, V., Simani, M. C., Sinram, K., Belostotski, S., Stancari, M., Statera, M., Steffens, E., Steijger, J. J. M., Stenzel, H., Stewart, J., Stosslein, U., Tait, P., Tanaka, H., Taroian, S., Bernreuther, S., Tchuiko, B., Terkulov, A., Tkabladze, A., Trzcinski, A., Tytgat, M., Vandenbroucke, A., van der Nat, P., van der Steenhoven, G., Vetterli, M. C., Vikhrov, V., Bianchi, N., Vincter, M. G., Vogel, C., Vogt, M., Volmer, J., Weiskopf, C., Wendland, J., Wilbert, J., Ybeles Smit, G., Yen, S., Zihlmann, B., Blok, H. P., Zohrabian, H., Zupranski, P., HERMES Collaboration, Blumlein, J., Akopov, Z., Bottcher, H., Borissov, A., Borysenko, A., Bouwhuis, M., Brack, J., Brull, A., Bryzgalov, V., Capitani, G. P., Chiang, H. C., Ciullo, G., Amarian, M., Contalbrigo, M., Dalpiaz, P. F., De Leo, R., De Nardo, L., De Sanctis, E., Devitsin, E., Di Nezza, P., Duren, M., Ehrenfried, M., Elalaoui-Moulay, A., Ammosov, V. V., Elbakian, G., Ellinghaus, F., Elschenbroich, U., Ely, J., Fabbri, R., Fantoni, A., Fechtchenko, A., Felawka, L., Fox, B., Franz, J., Andrus, A., Frullani, S., Gapienko, G., Gapienko, V., Garibaldi, F., Garrow, K., Garutti, E., Gaskell, D., Gavrilov, G., Gharibyan, V., Graw, G., Aschenauer, E. C., Grebeniouk, O., Greeniaus, L. G., Gregor, I. M., Hafidi, K., Hartig, M., Hasch, D., Heesbeen, D., Henoch, M., Hertenberger, R., Hesselink, W. H. A., Augustyniak, W., Hillenbrand, A., Hoek, M., Holler, Y., Hommez, B., Iarygin, G., Ivanilov, A., Izotov, A., Jackson, H. E., Jgoun, A., Kaiser, R., Avakian, R., Kinney, E., Kisselev, A., Konigsmann, K., Kopytin, M., Korotkov, V., Kozlov, V., Krauss, B., Krivokhijine, V. G., Lagamba, L., Lapikas, Louk, Avetissian, A., Laziev, A., Lenisa, P., Liebing, P., Lindemann, T., Linden-Levy, L. A., Lipka, K., Lorenzon, W., Lu, J., Maiheu, B., Makins, N. C. R., (Astro)-Particles Physics, Photo Conversion Materials, and Student Lab and Education

Subjects
Quark, internal [polarized target], Nuclear and High Energy Physics, Particle physics, Strange quark, sea [quark], High Energy Physics::Lattice, deep inelastic scattering [positron deuteron], Hadron, Nuclear Theory, dependence [flavor], Down quark, FOS: Physical sciences, HERMES, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), density [helicity], 27.5 GeV, Pion, 0103 physical sciences, ddc:530, SDG 14 - Life Below Water, deep inelastic scattering [positron p], 010306 general physics, electroproduction [pi], Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, polarization [quark], Deep inelastic scattering, moment, Baryon, DESY HERA Stor, electroproduction [K], Up quark, valence [quark], polarization [cross section], High Energy Physics::Experiment, polarized beam [positron], asymmetry [spin], experimental results
Abstract

Polarized deep-inelastic scattering data on longitudinally polarized hydrogen and deuterium targets have been used to determine double-spin asymmetries of cross sections. Inclusive and semi-inclusive asymmetries for the production of positive and negative pions from hydrogen were obtained in a reanalysis of previously published data. Inclusive and semi-inclusive asymmetries for the production of negative and positive pions and kaons were measured on a polarized deuterium target. The separate helicity densities for the up and down quarks and the anti-up, anti-down, and strange sea quarks were computed from these asymmetries in a "leading order" QCD analysis. The polarization of the up-quark is positive and that of the down-quark is negative. All extracted sea quark polarizations are consistent with zero, and the light quark sea helicity densities are flavor symmetric within the experimental uncertainties. First and second moments of the extracted quark helicity densities in the measured range are consistent with fits of inclusive data. © 2005 The American Physical Society.

Published
2005

10. Single spin asymmetries in semi-inclusive electroproduction of pions and kaons on a transversely polarized hydrogen target at HERMES

Author

Seidl, Ralf-Christian

Subjects
internal [polarized target], electron p: deep inelastic scattering, angular distribution: asymmetry, transverse [polarization], HERMES [magnetic spectrometer], +K+electron+anything%22">electron p --> K electron anything, fragmentation function, pi: electroproduction, 27.5 GeV, +pi+electron+anything%22">electron p --> pi electron anything, polarization: transverse, K: electroproduction, electroproduction [pi], magnetic spectrometer: HERMES, thesis, DESY HERA Stor, asymmetry [angular distribution], electroproduction [K], deep inelastic scattering [electron p], transverse momentum [quark], polarized target: internal, quark: transverse momentum, asymmetry [spin], spin: asymmetry, experimental results
Abstract

Friedrich-Alexander-Universität Erlangen-Nürnberg, Diss., 2004; 165 pp., (2004). doi:10.3204/DESY-THESIS-2004-029, Published by Deutsches Elektronen-Synchrotron, DESY, Hamburg

Published
2004
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11. Bestimmung der Verhältnisse der $F{^n_2}$- und $F{^p_2}$-Strukturfunktion sowie der $u$- und $d$-Valenzquarkverteilung

Author

Seibert, J.

Subjects
electron p: deep inelastic scattering, ratio [structure function], momentum spectrum [quark], structure function [n], n: structure function, HERMES [magnetic spectrometer], target: internal, structure function [p], pi: electroproduction, p: structure function, RICH, electroproduction [pi], magnetic spectrometer: HERMES, internal [target], thesis, structure function: ratio, bibliography, electron deuteron: deep inelastic scattering, quark: momentum spectrum, DESY HERA Stor, valence [quark], deep inelastic scattering [electron p], quark: valence, deep inelastic scattering [electron deuteron], experimental results
Abstract

Universität Freiburg, Diss., 2001; 124 pp. (2001). = Universität Freiburg, Diss., 2001

Published
2001

12. Studies of multihadronic final states in electron positron annihilation

Author

Podobrin, Oliver

Subjects
annihilation: electron positron, cluster [model], annihilation [electron positron], pi [electroproduction], event shape analysis, (2jet) [final state], hadron: multiple production, rho(770)0 [electroproduction], electron positron [colliding beams], inclusive reaction [electron positron], final state [(2jet)], electroproduction [pi], multiplicity [spectrum], electroproduction [rho(770)0], cross section, electroproduction: rho(770)0, thesis, electron positron: colliding beams, boson: statistics, final state: (2jet), DESY PETRA Stor, multiplicity: spectrum, colliding beams [electron positron], spectrum: multiplicity, electroproduction: pi, Particle Physics - Experiment, correlation: two-particle, fragmentation [model], statistics [boson], spectrum [multiplicity], jet [electroproduction], electron positron: annihilation, pi: electroproduction, jet: electroproduction, intermittency, model: cluster, rho(770)0: electroproduction, two-particle [correlation], hadron [multiple production], multiple production [hadron], electroproduction [jet], tables, electron positron [annihilation], bibliography, electron positron: inclusive reaction, (2jet): final state, 35 GeV-cms, electroproduction: jet, multiple production: hadron, colliding beams: electron positron, model: fragmentation, CELLO, experimental results
Abstract

Universität Hamburg, Diss., 1992; 157 pp. (1992). = Universität Hamburg, Diss., 1992

Published
1992

13. Measurement and analysis of the reaction $\gamma\gamma\to\pi^+3\pi^-$

Author

Pust, R., Olsson, J., Clarke, D., Dieckmann, A., Duerdoth, I. P., Eckerlin, Guenter, Elsen, E., Felst, R., Finch, A. J., Foster, F., Greenshaw, T., Hagemann, J., Allison, John, Haidt, D., Heintze, J., Heinzelmann, G., Hellenbrand, K. H., Hill, P., Hughes, G., Kado, H., Kawagoe, K., Kleinwort, C., Knies, G., Ambrus, K., Komamiya, S., Krehbiel, H., von Krogh, J., Kuhlen, M., Loebinger, F. K., Macbeth, A. A., Magnussen, N., Marshall, R., Meinke, R., Middleton, R. P., Barlow, Roger J., Murphy, P. G., Naroska, B., Nye, J. M., Ould-Saada, F., Pitzl, D., Ramcke, R., Rieseberg, H., Sato, A., Schmidt, D., Smolik, L., Bartel, W., Schneekloth, U., Skard, J. A. J., Spitzer, J., Steffen, P., Stephens, K., Takeshita, T., Wagner, A., Walker, I. W., Weber, G., Zimmer, M., Bethke, S., Zorn, G. T., JADE Collaboration, Bowdery, C. K., Cartwright, S. L., and Chrin, J.

Subjects
two-photon [exchange], (pi+ pi-) [mass spectrum], pi [electroproduction], multiple production [pi], inelastic scattering: electron positron, rho(770)0 [electroproduction], electron positron [inelastic scattering], multiple production: pi, channel cross section: energy dependence, electron positron [colliding beams], electroproduction [pi], 36.4 GeV-cms, electroproduction [rho(770)0], electroproduction: rho(770)0, electron positron: colliding beams, boson: statistics, energy dependence [channel cross section], DESY PETRA Stor, colliding beams [electron positron], two-photon: exchange, two-pion [correlation function], electroproduction: pi, (pi+ pi-): mass spectrum, mass spectrum [(pi+ pi-)], statistics [boson], electron positron: inelastic scattering, correlation function: two-pion, exclusive reaction [photon photon], pi: electroproduction, +3pi%2B+3pi-+positron+electron%22">electron positron --> 3pi+ 3pi- positron electron, rho(770)0: multiplicity, ddc:530, +2rho%28770%290+pi%2B+pi-+positron+electron%22">electron positron --> 2rho(770)0 pi+ pi- positron electron, rho(770)0: electroproduction, exchange: two-photon, photon photon: exclusive reaction, pi: multiple production, inelastic scattering [electron positron], pi [multiple production], mass spectrum: (pi+ pi-), bibliography, +rho%28770%290+2pi%2B+2pi-+positron+electron%22">electron positron --> rho(770)0 2pi+ 2pi- positron electron, colliding beams: electron positron, JADE, multiplicity [rho(770)0], exchange [two-photon], experimental results
Abstract

22 pp. (1991)., The reactionγγ→3π+3π- has been studied usig the JADE detector at PETRA. The topological cross sectionσ(γγ→3π+3π-) was measured in the CM energy range 1.5–5.5 GeV. The production ofρ0,s was observed and the average number ofρ0,s per event measured. The contributions of the subprocessesγγ→ρ02π+2π-,γγ→ρ0ρ0π+2π- andγγ→ 3π+3π- (phase space) were studied and 95% C.L. upper limits for the cross sectionσ(γγ→ρ0ρ0π+π- determined. Finally the Bose-Einstein correlation for pairs of like signed pions was observed. A fit to a standard parametrization gave results consistent with other studies of this effect in pion systems.

Published
1991
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14. Experimentelle Untersuchung der Reaktion $\gamma\gamma \rightarrow \pi^{+} \pi^{-}$ mit dem Detektor CELLO

Author

Harjes, Jens

Subjects
two-photon [exchange], width: measured [f2(1270)], (pi+ pi-) [mass spectrum], +pi%2B+pi%22">photon photon --> pi+ pi, pi [electroproduction], electroproduction [meson resonance], f2(1565) [postulated particle], width [tensor meson], electron positron [colliding beams], f2(1720), electroproduction [pi], total cross section, ((4)), photon photon [interaction], thesis, f2(1270): width: measured, electron positron: colliding beams, postulated particle: f2(1565), interaction: photon photon, pair production [pi], differential cross section, DESY PETRA Stor, colliding beams [electron positron], two-photon: exchange, electroproduction: pi, (pi+ pi-): mass spectrum, meson resonance [electroproduction], mass spectrum [(pi+ pi-)], scalar meson: width, pi [pair production], Born approximation, +pi%2B+pi-+positron+electron%22">electron positron --> pi+ pi- positron electron, electroproduction: meson resonance, interaction [photon photon], photon photon: interaction, pi: electroproduction, unitarity, width [scalar meson], f0(1590), tensor meson: width, channel cross section, tables, exchange: two-photon, f2(1525), mass spectrum: (pi+ pi-), bibliography, partial wave analysis, postulated particle: f2(1810), meson resonance: electroproduction, colliding beams: electron positron, f2(1810) [postulated particle], CELLO, pi: pair production, pair production: pi, exchange [two-photon], experimental results
Abstract

188 pp. (1991).

Published
1991

15. Untersuchung der Reaktion $\gamma \gamma$ $\rightarrow$ 3$\pi^+$ 3$\pi^-$ mit dem JADE-Detektor bei PETRA

Author

Pust, R.

Subjects
two-photon [exchange], vector dominance, statistics [boson], yield [rho(770)0], pi [electroproduction], multiple production [pi], exclusive reaction [photon photon], electron positron [inelastic scattering], +3pi%2B+3pi-+positron+electron%22">electron positron --> 3pi+ 3pi- positron electron, electron positron [colliding beams], electroproduction [pi], 36.4 GeV-cms, channel cross section, rho3(1690), inelastic scattering [electron positron], pi [multiple production], thesis, hadronic [cross section], bibliography, +rho3%281690%29+rho%28770%290+positron+electron%22">electron positron --> rho3(1690) rho(770)0 positron electron, +rho%28770%290+2pi%2B+2pi-+positron+electron%22">electron positron --> rho(770)0 2pi+ 2pi- positron electron, +2rho%28770%290+pi%2B+pi-+positron+electron%22">electron positron --> 2rho(770)0 pi+ pi- positron electron, JADE, DESY PETRA Stor, colliding beams [electron positron], two-pion [correlation function], exchange [two-photon], experimental results
Published
1990

16. HIGH-ENERGY e+ e- INTERACTIONS

Author

Wolf, Guenter

Subjects
ELECTROPRODUCTION: LAMBDA, VALIDITY TEST [QUANTUM CHROMODYNAMICS], EXCITED ELECTRON: MASS, DIFFERENTIAL CROSS SECTION: X-DEPENDENCE, GLUON: BREMSSTRAHLUNG, LEPTON [ELECTROPRODUCTION], PHOTON: PAIR PRODUCTION, +MUON%2B+MUON%22">ELECTRON POSITRON --> MUON+ MUON, MASS [LOWER LIMIT], DESY PETRA STOR, SEARCH FOR [HEAVY LEPTON], EXCITED MUON: MASS, LOWER LIMIT [MASS], ANGULAR DEPENDENCE [DIFFERENTIAL CROSS SECTION], SPECTRUM [INCLUSIVE REACTION], QUANTUM ELECTRODYNAMICS: VALIDITY TEST, DIFFERENTIAL CROSS SECTION: SCALING, ENERGY DEPENDENCE: TOTAL CROSS SECTION, TAU: PAIR PRODUCTION, MOMENTUM: DIFFERENTIAL CROSS SECTION, K: ELECTROPRODUCTION, EXCITED ELECTRON [MASS], SUPERSYMMETRY [POSTULATED PARTICLE], LEPTON: ELECTROPRODUCTION, ENERGY LOSS: SPECTRUM, CHARGED PARTICLE: MULTIPLICITY, TOTAL CROSS SECTION: ENERGY DEPENDENCE, ELECTROPRODUCTION [K], ENERGY DEPENDENCE [TOTAL CROSS SECTION], PAIR PRODUCTION: TAU, PI: ELECTROPRODUCTION, ANNIHILATION: ELECTRON POSITRON, PAIR PRODUCTION [TAU], JET: SPHERICITY, RAPIDITY [SPECTRUM], SPHERICITY [JET], FINAL STATE [(3JET)], DALITZ PLOT [MULTIDIMENSIONAL ANALYSIS], ELECTRON POSITRON [ELASTIC SCATTERING], +ANTI-K0+ANYTHING%22">ELECTRON POSITRON --> ANTI-K0 ANYTHING, ELECTRON POSITRON [ANNIHILATION], ELECTROPRODUCTION: P, FRAGMENTATION [GLUON], ELECTROPRODUCTION: K, ELASTIC SCATTERING [ELECTRON POSITRON], ANNIHILATION [ELECTRON POSITRON], EXCHANGE [ONE-PHOTON], MASS: EXCITED MUON, QUARK: FRAGMENTATION, X-DEPENDENCE [DIFFERENTIAL CROSS SECTION], TRANSVERSE MOMENTUM: SPECTRUM, MULTIPLE PRODUCTION [HADRON], EXCITED MUON [MASS], NEUTRAL CURRENT, ELECTROPRODUCTION [PI], EXCITED LEPTON [SEARCH FOR], X-DEPENDENCE: DIFFERENTIAL CROSS SECTION, TAU: LIFETIME, (3JET) [FINAL STATE], DIFFERENTIAL CROSS SECTION: ASYMMETRY, MASS SPECTRUM: (MUON PHOTON), COUPLING CONSTANT: STRONG INTERACTION, LAMBDA [ELECTROPRODUCTION], ASYMMETRY: DIFFERENTIAL CROSS SECTION, STRONG INTERACTION [COUPLING CONSTANT], COLLIDING BEAMS: ELECTRON POSITRON, SCALING [DIFFERENTIAL CROSS SECTION], +K0+ANYTHING%22">ELECTRON POSITRON --> K0 ANYTHING, GLUON: FRAGMENTATION, +LAMBDA+ANYTHING%22">ELECTRON POSITRON --> LAMBDA ANYTHING, DIFFERENTIAL CROSS SECTION [SCALING], JET: ELECTROPRODUCTION, ONE-PHOTON: EXCHANGE, DIFFERENTIAL CROSS SECTION [X-DEPENDENCE], (MUON PHOTON): MASS SPECTRUM, SPECTRUM [RAPIDITY], INCLUSIVE REACTION: SPECTRUM, VALIDITY TEST [QUANTUM ELECTRODYNAMICS], SPECTRUM: INCLUSIVE REACTION, ELECTRON POSITRON [COLLIDING BEAMS], EXCHANGE: ONE-PHOTON, +TAU%2B+TAU%22">ELECTRON POSITRON --> TAU+ TAU, DIFFERENTIAL CROSS SECTION: ANGULAR DEPENDENCE, STRONG INTERACTION: COUPLING CONSTANT, MUON [PAIR PRODUCTION], DIFFERENTIAL CROSS SECTION [ASYMMETRY], LAMBDA: ELECTROPRODUCTION, RAPIDITY: SPECTRUM, +ANTILAMBDA+ANYTHING%22">ELECTRON POSITRON --> ANTILAMBDA ANYTHING, P [ELECTROPRODUCTION], ENERGY DEPENDENCE [CHANNEL CROSS SECTION], ELECTRON POSITRON: ANNIHILATION, LOWER LIMIT: MASS, PAIR PRODUCTION [MUON], ENERGY LOSS [SPECTRUM], MASS: EXCITED ELECTRON, FRAGMENTATION [QUARK], EXCHANGE: Z0, DIFFERENTIAL CROSS SECTION [MOMENTUM], EXPERIMENTAL RESULTS [REVIEW], BIBLIOGRAPHY, (3JET): FINAL STATE, ELECTROPRODUCTION [P], MULTIPLE PRODUCTION: HADRON, ELECTROPRODUCTION: PI, DIFFERENTIAL CROSS SECTION: MOMENTUM, ONE-PHOTON [EXCHANGE], +2PHOTON%22">ELECTRON POSITRON --> 2PHOTON, INCLUSIVE REACTION [SPECTRUM], PI [ELECTROPRODUCTION], QUARK: SEARCH FOR, GLUON [SPIN], THRUST [JET], ELECTROPRODUCTION [LAMBDA], JET: THRUST, GLUON [BREMSSTRAHLUNG], SPIN: GLUON, EXCHANGE [Z0], JET [ELECTROPRODUCTION], FINAL STATE: (3JET), SEARCH FOR [QUARK], ELECTRON POSITRON: INCLUSIVE REACTION, ELECTROPRODUCTION: JET, COLLIDING BEAMS [ELECTRON POSITRON], HADRON [MULTIPLE PRODUCTION], Weinberg angle, MULTIPLICITY [CHARGED PARTICLE], MOMENTUM [DIFFERENTIAL CROSS SECTION], ANGULAR DEPENDENCE: DIFFERENTIAL CROSS SECTION, ELECTRON POSITRON: COLLIDING BEAMS, RATIO [TOTAL CROSS SECTION], REVIEW: EXPERIMENTAL RESULTS, ELASTIC SCATTERING: ELECTRON POSITRON, PHOTON [PAIR PRODUCTION], MASS: LOWER LIMIT, QUANTUM CHROMODYNAMICS: VALIDITY TEST, ELECTROPRODUCTION [JET], SPECTRUM: ENERGY LOSS, MULTIDIMENSIONAL ANALYSIS: DALITZ PLOT, SPECTRUM: TRANSVERSE MOMENTUM, MASS SPECTRUM [(MUON PHOTON)], PAIR PRODUCTION: PHOTON, SPECTRUM [ENERGY LOSS], SPIN [GLUON], POSTULATED PARTICLE: SUPERSYMMETRY, Z0 [EXCHANGE], BREMSSTRAHLUNG: GLUON, RADIATIVE CORRECTION, DIFFERENTIAL CROSS SECTION [ANGULAR DEPENDENCE], RATIO: TOTAL CROSS SECTION, LECTURES, LIFETIME [TAU], TOTAL CROSS SECTION [RATIO], MASS [EXCITED ELECTRON], COUPLING CONSTANT [STRONG INTERACTION], ELECTRON POSITRON: ELASTIC SCATTERING, MUON: PAIR PRODUCTION, CHANNEL CROSS SECTION: ENERGY DEPENDENCE, BREMSSTRAHLUNG [GLUON], TAU [PAIR PRODUCTION], P: ELECTROPRODUCTION, TOTAL CROSS SECTION [ENERGY DEPENDENCE], TOTAL CROSS SECTION: RATIO, ELECTROPRODUCTION: LEPTON, GLUON: SPIN, MASS [EXCITED MUON], SPECTRUM [TRANSVERSE MOMENTUM], MODEL: QUARK PARTON, HADRON: MULTIPLE PRODUCTION, PAIR PRODUCTION: MUON, INCLUSIVE REACTION [ELECTRON POSITRON], (MUON PHOTON) [MASS SPECTRUM], SEARCH FOR: EXCITED LEPTON, ELECTROPRODUCTION [LEPTON], PAIR PRODUCTION [PHOTON], QUARK PARTON [MODEL], Z0: EXCHANGE, SCALING: DIFFERENTIAL CROSS SECTION, TRANSVERSE MOMENTUM [SPECTRUM], 27.4-36.7 GEV-CMS, HEAVY LEPTON: SEARCH FOR, K [ELECTROPRODUCTION], SPECTRUM: RAPIDITY, ASYMMETRY [DIFFERENTIAL CROSS SECTION]
Abstract

107 pp. (1981).

Published
1981

17. Teilchenverhältnisse für geladene Pionen, Kaonen und Protonen in $e^{+} e^{-}$ Annihilationsereignissen bei einer Schwerpunktsenergie von 44 GeV

Author

Winand, Claus

Subjects
TOTAL CROSS SECTION: HADRONIC, INCLUSIVE REACTION [DIFFERENTIAL CROSS SECTION], pi: photoproduction, ELECTROPRODUCTION [PI], INCLUSIVE REACTION: DIFFERENTIAL CROSS SECTION, DESY PETRA STOR, HADRONIC: TOTAL CROSS SECTION, p: photoproduction, ELECTROPRODUCTION: PI, PRODUCTION [RATIO], THESIS, HADRONIC [TOTAL CROSS SECTION], TASSO, RATIO [PRODUCTION], DIFFERENTIAL CROSS SECTION: INCLUSIVE REACTION, PI [ELECTROPRODUCTION], K: ELECTROPRODUCTION, COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, K: photoproduction, ELECTROPRODUCTION [K], 44 GEV-CMS, COLLIDING BEAMS [ELECTRON POSITRON], DIFFERENTIAL CROSS SECTION [INCLUSIVE REACTION], ELECTRON POSITRON: INCLUSIVE REACTION, PI: ELECTROPRODUCTION, ANNIHILATION: ELECTRON POSITRON, RATIO: PRODUCTION, ELECTRON POSITRON [COLLIDING BEAMS], INCLUSIVE REACTION [ELECTRON POSITRON], ELECTRON POSITRON: COLLIDING BEAMS, ELECTRON POSITRON [ANNIHILATION], ELECTROPRODUCTION: P, ELECTROPRODUCTION: K, ANNIHILATION [ELECTRON POSITRON], photoproduction [pi], TOTAL CROSS SECTION [HADRONIC], K [ELECTROPRODUCTION], photoproduction [K], P [ELECTROPRODUCTION], PRODUCTION: RATIO, ELECTRON POSITRON: ANNIHILATION, photoproduction [p]
Abstract

82 pp. (1986).

Published
1986
Full Text
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18. THE TRANSVERSE MOMENTUM PROFILE OF A QUARK JET

Author

Eichmann, G. and Steiner, F.

Subjects
JET [QUARK], MODEL: FIREBALL, Nuclear Theory, ELECTROPRODUCTION [PI], MODEL: PARTON, MOMENTUM: PARTON, ELECTROPRODUCTION: PI, PARTON [MOMENTUM], FIREBALL [MODEL], JET [MODEL], ddc:530, PI [ELECTROPRODUCTION], Nuclear Experiment, SPECTRUM [TRANSVERSE MOMENTUM], QUARK: JET, PI: ELECTROPRODUCTION, ANNIHILATION: ELECTRON POSITRON, MOMENT, ELECTRON POSITRON [ANNIHILATION], MODEL: JET, TRANSVERSE MOMENTUM [SPECTRUM], ANNIHILATION [ELECTRON POSITRON], SPECTRUM: TRANSVERSE MOMENTUM, High Energy Physics::Experiment, INTERPRETATION OF EXPERIMENTS, PARTON [MODEL], TRANSVERSE MOMENTUM: SPECTRUM, ELECTRON POSITRON: ANNIHILATION
Abstract

(1979). doi:10.1007/BF01546974, The first and second moments of the transverse momentum distribution of pions ine+e−-annihilation at fixed longitudinal momentum with respect to the jet axis are discussed, treating the hadronic final state evolving from the 2-quark system in the framework of a fireball-model. Good agreement with the published data is found. A comparison with thepT-distribution of electroproduction is made, showing qualitative agreement. This casts serious doubts on previous conclusions favoring a large partonkT inside the proton.

Published
1978

19. Angular Asymmetries of $e^+ e^-$ Annihilation to Three Jets

Author

Koller, K., Sander, H. G., Walsh, T. F., and Zerwas, P. M.

Subjects
GLUON: BREMSSTRAHLUNG, EFFECT: NONPERTURBATIVE, +PI+ANYTHING%22">ELECTRON POSITRON --> PI ANYTHING, (3JET): FINAL STATE, HADRON: ELECTROPRODUCTION, ELECTROPRODUCTION: PI, ANGULAR DEPENDENCE [DIFFERENTIAL CROSS SECTION], ELECTROPRODUCTION [HADRON], NUMERICAL CALCULATIONS, PI [ELECTROPRODUCTION], ELECTROPRODUCTION: HADRON, THRUST [JET], Nuclear Experiment, JET: THRUST, GLUON [BREMSSTRAHLUNG], (JET): ANGULAR DISTRIBUTION, HADRON [ELECTROPRODUCTION], QUANTUM CHROMODYNAMICS, ANGULAR DISTRIBUTION: (JET), JET [ELECTROPRODUCTION], FINAL STATE: (3JET), ELECTROPRODUCTION: JET, PI: ELECTROPRODUCTION, ANNIHILATION: ELECTRON POSITRON, ANGULAR DEPENDENCE: DIFFERENTIAL CROSS SECTION, FINAL STATE [(3JET)], ELECTRON POSITRON [ANNIHILATION], ANNIHILATION [ELECTRON POSITRON], ELECTROPRODUCTION [JET], BREMSSTRAHLUNG: GLUON, Astrophysics::High Energy Astrophysical Phenomena, DIFFERENTIAL CROSS SECTION [ANGULAR DEPENDENCE], ELECTROPRODUCTION [PI], BREMSSTRAHLUNG [GLUON], (JET) [ANGULAR DISTRIBUTION], +QUARK+ANTIQUARK+GLUON%22">ELECTRON POSITRON --> QUARK ANTIQUARK GLUON, (3JET) [FINAL STATE], DIFFERENTIAL CROSS SECTION: ASYMMETRY, ANGULAR DISTRIBUTION [(JET)], ddc:530, ASYMMETRY: DIFFERENTIAL CROSS SECTION, JET: ELECTROPRODUCTION, High Energy Physics::Phenomenology, DIFFERENTIAL CROSS SECTION: ANGULAR DEPENDENCE, DIFFERENTIAL CROSS SECTION [ASYMMETRY], NONPERTURBATIVE [EFFECT], High Energy Physics::Experiment, ELECTRON POSITRON: ANNIHILATION, ASYMMETRY [DIFFERENTIAL CROSS SECTION]
Abstract

(1980). doi:10.1007/BF01588839, We discuss the angular asymmetries of 3-jet events ine+e− annihilation, originating from hard gluon bremsstrahlung off quarks. Lepton beam polarization helps to disentangle the various helicity components of the bremsstrahlung cross section. They are sensitive to the spin of the radiated quantum but are otherwise parameter-free.

Published
1979

20. Quark Fragmentation Functions in Hadronic and Deep Inelastic Single Particle Inclusive Processes

Author

Flume-Gorczyca, B.

Subjects
FINAL STATE: PI, ELECTRON [FINAL STATE], High Energy Physics::Lattice, Nuclear Theory, INCLUSIVE REACTION [PI+ P], ELECTROPRODUCTION [PI], INCLUSIVE REACTION [ELECTRON P], +PI-+ANYTHING%22">PI+ P --> PI- ANYTHING, ELECTROPRODUCTION: PI, PI+ P: INCLUSIVE REACTION, FINAL STATE [PI-], INCLUSIVE REACTION: FRAGMENTATION, PRODUCTION: PI, FRAGMENTATION [BEAM], PI [ELECTROPRODUCTION], PI: PRODUCTION, Nuclear Experiment, PI [PRODUCTION], +PI-+ANYTHING%22">ELECTRON P --> PI- ANYTHING, BEAM: FRAGMENTATION, ELECTRON P: INCLUSIVE REACTION, ELECTRON: FINAL STATE, FINAL STATE [ELECTRON], High Energy Physics::Phenomenology, FRAGMENTATION [INCLUSIVE REACTION], PI: ELECTROPRODUCTION, MODEL: QUARK PARTON, FINAL STATE: ELECTRON, +PI-+ELECTRON+ANYTHING%22">ELECTRON P --> PI- ELECTRON ANYTHING, QUARK PARTON [MODEL], TOTAL CROSS SECTION, PRODUCTION [PI], High Energy Physics::Experiment, PI- [FINAL STATE], INTERPRETATION OF EXPERIMENTS, PI-: FINAL STATE
Abstract

12 pp. (1974)., In the framework of Feynman's quark--parton model for inclusive electroproduction and quark model of Ezawa, Maharana and Miyazawa for hadronic inclusive processes, relations between invariant cross sections for electroproduction of pions and purely hadronic production of pions in the beam fragmentation regions are derived. They are satisfied by data. The ratio of parton fragmentation functions $\eta=D^{\pi+}_u(z)/D^{\pi+}_d(z)$ is estimated from purely hadronic processes independently from the parton model.

Published
1974

21. Recent Results from TASSO at PETRA

Author

Lüke, Dieter and TASSO Collaboration

Subjects
ELECTROPRODUCTION: LAMBDA, DIFFERENTIAL CROSS SECTION: X-DEPENDENCE, BRANCHING RATIO [F(1515)], PAIR PRODUCTION [LEPTON], DESY PETRA STOR, DIFFERENTIAL CROSS SECTION: ENERGY DEPENDENCE, MASS SPECTRUM [(2K0(S))], MASS SPECTRUM: (2PI+ 2PI-), ANGULAR DEPENDENCE [DIFFERENTIAL CROSS SECTION], DIFFERENTIAL CROSS SECTION [ENERGY DEPENDENCE], (K+ K-) [MASS SPECTRUM], K: ELECTROPRODUCTION, ELECTROPRODUCTION [K], TWO-PHOTON: EXCHANGE, MASS ENHANCEMENT: (2100), SEARCH FOR: HIGGS PARTICLE, PI: ELECTROPRODUCTION, ANNIHILATION: ELECTRON POSITRON, PHOTON PHOTON: INTERACTION, ELECTRON POSITRON [ELASTIC SCATTERING], ELECTRON POSITRON [ANNIHILATION], ELECTROPRODUCTION: P, ELECTROPRODUCTION: K, ELASTIC SCATTERING [ELECTRON POSITRON], ANNIHILATION [ELECTRON POSITRON], 12.0-14.0: 22.0-36.7 GEV-CMS, CHARGED PARTICLE [D*(2010)], X-DEPENDENCE [DIFFERENTIAL CROSS SECTION], POSTULATED PARTICLE: HIGGS PARTICLE, ELECTRON POSITRON [INELASTIC SCATTERING], ENERGY DEPENDENCE: DIFFERENTIAL CROSS SECTION, ELECTROPRODUCTION [PI], 22.0-36.7 GEV-CMS [12.0-14.0], X-DEPENDENCE: DIFFERENTIAL CROSS SECTION, INTERACTION: PHOTON PHOTON, BOTTOM: SEMILEPTONIC DECAY, LAMBDA [ELECTROPRODUCTION], ELECTROMAGNETIC DECAY: F(1515), ddc:530, F(1515) [ELECTROMAGNETIC DECAY], (2PI+ 2PI-): MASS SPECTRUM, MASS SPECTRUM: (2K0(S)), COLLIDING BEAMS: ELECTRON POSITRON, PAIR PRODUCTION: LEPTON, TWO-PHOTON [EXCHANGE], DIFFERENTIAL CROSS SECTION [X-DEPENDENCE], LEPTON: PAIR PRODUCTION, ELECTRON POSITRON [COLLIDING BEAMS], ENERGY DEPENDENCE [DIFFERENTIAL CROSS SECTION], EXCHANGE: TWO-PHOTON, DIFFERENTIAL CROSS SECTION: ANGULAR DEPENDENCE, LAMBDA: ELECTROPRODUCTION, ELECTROPRODUCTION: RHO(770)0, P [ELECTROPRODUCTION], ELECTRON POSITRON: ANNIHILATION, ELECTROMAGNETIC DECAY [F(1515)], EXPERIMENTAL RESULTS [REVIEW], D*(2010) [ELECTROPRODUCTION], INTERACTION [PHOTON PHOTON], (2PI+ 2PI-) [MASS SPECTRUM], ELECTROPRODUCTION [P], BRANCHING RATIO [HIGGS PARTICLE], ELECTROPRODUCTION: PI, RHO(770)0: ELECTROPRODUCTION, TASSO, SEMILEPTONIC DECAY: BOTTOM, PI [ELECTROPRODUCTION], HIGGS PARTICLE [POSTULATED PARTICLE], MASS SPECTRUM [(2PI+ 2PI-)], POSTULATED PARTICLE: TECHNIPION, ELECTROPRODUCTION [LAMBDA], YIELD [CHARGED PARTICLE], INELASTIC SCATTERING: ELECTRON POSITRON, EXCHANGE [TWO-PHOTON], ELECTRON POSITRON: INCLUSIVE REACTION, COLLIDING BEAMS [ELECTRON POSITRON], INELASTIC SCATTERING [ELECTRON POSITRON], F(1515): BRANCHING RATIO, HIGGS PARTICLE [SEARCH FOR], (K+ K-): MASS SPECTRUM, ANGULAR DEPENDENCE: DIFFERENTIAL CROSS SECTION, ELECTRON POSITRON: COLLIDING BEAMS, REVIEW: EXPERIMENTAL RESULTS, CHARGED PARTICLE: YIELD, ELASTIC SCATTERING: ELECTRON POSITRON, ASYMMETRY [CHARGED PARTICLE], ELECTROPRODUCTION [D*(2010)], SEMILEPTONIC DECAY [BOTTOM], DIFFERENTIAL CROSS SECTION [ANGULAR DEPENDENCE], HIGGS PARTICLE: BRANCHING RATIO, D*(2010): ELECTROPRODUCTION, ELECTRON POSITRON: INELASTIC SCATTERING, ELECTRON POSITRON: ELASTIC SCATTERING, ELECTROPRODUCTION [RHO(770)0], MASS SPECTRUM: (K+ K-), P: ELECTROPRODUCTION, ENERGY DEPENDENCE [MULTIPLICITY], BOTTOM [SEMILEPTONIC DECAY], CHARGED PARTICLE: ASYMMETRY, TECHNIPION [POSTULATED PARTICLE], (2K0(S)) [MASS SPECTRUM], MULTIPLICITY: ENERGY DEPENDENCE, MASS ENHANCEMENT [(2100)], LEPTON [PAIR PRODUCTION], ELECTROPRODUCTION: D*(2010), D*(2010): CHARGED PARTICLE, INCLUSIVE REACTION [ELECTRON POSITRON], MASS SPECTRUM [(K+ K-)], K [ELECTROPRODUCTION], F(1515): ELECTROMAGNETIC DECAY, RHO(770)0 [ELECTROPRODUCTION], (2100) [MASS ENHANCEMENT], (2100): MASS ENHANCEMENT, (2K0(S)): MASS SPECTRUM, PHOTON PHOTON [INTERACTION]
Abstract

(1982). doi:10.1051/jphyscol:1982313, Without abstract

Published
1982

24. Messung und Analyse der Reaktion $\gamma \gamma \rightarrow \pi^{+} \pi^{-} \pi^{+} \pi^{-}$ mit PLUTO

Author

Müller, Hermann

Subjects
two-photon [exchange], +2pi%2B+2pi-+positron+electron%22">electron positron --> 2pi+ 2pi- positron electron, (2pi+ 2pi-) [final state], (rho(770)0 pi+ pi-) [final state], (2rho(770)0) [final state], electron positron: inelastic scattering, model: pole, momentum transfer [channel cross section], exclusive reaction [photon photon], pi: electroproduction, PLUTO, final state: (rho(770)0 pi+ pi-), rho(770)0: electroproduction, electroproduction [pi], final state: (2rho(770)0), form factor, exchange: two-photon, electroproduction [rho(770)0], photon photon: exclusive reaction, inelastic scattering [electron positron], pole [model], thesis, final state: (2pi+ 2pi-), parity [spin], bibliography, electron positron: colliding beams, spin: parity, DESY PETRA Stor, colliding beams [electron positron], channel cross section: momentum transfer, experimental results
Abstract

229 pp. (1987).

Published
1987
Full Text
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25. TWO PHOTON INTERACTIONS

Author

Cords, Dieter

Subjects
(2JET): FINAL STATE, DIFFERENTIAL CROSS SECTION: X-DEPENDENCE, +F%281515%29+POSITRON+ELECTRON%22">ELECTRON POSITRON --> F(1515) POSITRON ELECTRON, MODEL: HARD SCATTERING, A2(1310): RADIATIVE DECAY, RADIATIVE DECAY: F(1270), MODEL: PARTON, DESY PETRA STOR, A2(1310): ELECTROPRODUCTION, MASS SPECTRUM [(2K0(S))], +RHO%28770%29%2B+PI%22">A2(1310) --> RHO(770)+ PI, +2RHO%28770%290+POSITRON+ELECTRON%22">ELECTRON POSITRON --> 2RHO(770)0 POSITRON ELECTRON, HADRONIC DECAY [A2(1310)], MASS SPECTRUM [(PI+ PI-)], MASS SPECTRUM: (2PI+ 2PI-), HIGH [TRANSVERSE MOMENTUM], STRUCTURE FUNCTION: X-DEPENDENCE, +RHO%28770%29-+PI%2B%22">A2(1310) --> RHO(770)- PI+, F(1270) [HADRONIC DECAY], +F%281270%29+POSITRON+ELECTRON%22">ELECTRON POSITRON --> F(1270) POSITRON ELECTRON, (PI+ PI-): MASS SPECTRUM, THETA(1640) [POSTULATED PARTICLE], (K+ K-) [MASS SPECTRUM], +JET+POSITRON+ELECTRON+ANYTHING%22">ELECTRON POSITRON --> JET POSITRON ELECTRON ANYTHING, +PI%2B+PI%22">F(1270) --> PI+ PI, TWO-PHOTON: EXCHANGE, MASS ENHANCEMENT: (2100), PI: ELECTROPRODUCTION, RADIATIVE DECAY [A2(1310)], ELECTROPRODUCTION [A2(1310)], PHOTON PHOTON: INTERACTION, ELECTROPRODUCTION [F(1270)], A2(1310) [HADRONIC DECAY], ELECTROPRODUCTION: P, FINAL STATE: (2JET), A2(1310) [ELECTROPRODUCTION], PI [PAIR PRODUCTION], RADIATIVE DECAY: F(1515), X-DEPENDENCE [DIFFERENTIAL CROSS SECTION], +2K0%28S%29%22">F(1515) --> 2K0(S), MODEL [HARD SCATTERING], F(1270): RADIATIVE DECAY, MULTIPLE PRODUCTION [HADRON], ELECTRON POSITRON [INELASTIC SCATTERING], PAIR PRODUCTION [PI], ELECTROPRODUCTION: F(1270), ELECTROPRODUCTION [PI], TRANSVERSE MOMENTUM [DIFFERENTIAL CROSS SECTION], RADIATIVE DECAY: A2(1310), X-DEPENDENCE: DIFFERENTIAL CROSS SECTION, INTERACTION: PHOTON PHOTON, DIFFERENTIAL CROSS SECTION: TRANSVERSE MOMENTUM, MASS SPECTRUM: (PI+ PI-), F(1270): ELECTROPRODUCTION, F(1515): HADRONIC DECAY, (2PI+ 2PI-): MASS SPECTRUM, MASS SPECTRUM: (2K0(S)), FINAL STATE [(2JET)], MASS SPECTRUM: (2PI0), COLLIDING BEAMS: ELECTRON POSITRON, +P+ANTI-P+POSITRON+ELECTRON%22">ELECTRON POSITRON --> P ANTI-P POSITRON ELECTRON, TWO-PHOTON [EXCHANGE], JET: ELECTROPRODUCTION, MASS SPECTRUM [(PI+ PI- PI0)], DIFFERENTIAL CROSS SECTION [X-DEPENDENCE], F(1515) [ELECTROPRODUCTION], F(1270): HADRONIC DECAY, A2(1310): HADRONIC DECAY, ELECTRON POSITRON [COLLIDING BEAMS], ELECTROPRODUCTION: F(1515), (PI+ PI- PI0): MASS SPECTRUM, EXCHANGE: TWO-PHOTON, ELECTROPRODUCTION: A2(1310), ELECTROPRODUCTION: RHO(770)0, +K%2B+K%22">F(1515) --> K+ K, P [ELECTROPRODUCTION], ENERGY DEPENDENCE [CHANNEL CROSS SECTION], (2PI0): MASS SPECTRUM, X-DEPENDENCE [STRUCTURE FUNCTION], EXPERIMENTAL RESULTS [REVIEW], +2PI0%22">F(1270) --> 2PI0, P [PAIR PRODUCTION], GLUEBALL, BIBLIOGRAPHY, PAIR PRODUCTION [P], INTERACTION [PHOTON PHOTON], (2PI+ 2PI-) [MASS SPECTRUM], ELECTROPRODUCTION [P], +PI%2B+PI-+POSITRON+ELECTRON%22">ELECTRON POSITRON --> PI+ PI- POSITRON ELECTRON, MULTIPLE PRODUCTION: HADRON, ELECTROPRODUCTION: PI, RHO(770)0: ELECTROPRODUCTION, HADRONIC DECAY: A2(1310), PAIR PRODUCTION: PI, F(1270) [RADIATIVE DECAY], PI [ELECTROPRODUCTION], MASS SPECTRUM [(2PI+ 2PI-)], RADIATIVE DECAY [F(1515)], F(1515): RADIATIVE DECAY, HADRONIC DECAY [F(1270)], F(1515): ELECTROPRODUCTION, QUANTUM CHROMODYNAMICS, INELASTIC SCATTERING: ELECTRON POSITRON, F(1270) [ELECTROPRODUCTION], RHO(770)0: PAIR PRODUCTION, HADRONIC DECAY [F(1515)], HADRONIC DECAY: F(1515), EXCHANGE [TWO-PHOTON], JET [ELECTROPRODUCTION], ELECTRON POSITRON: INCLUSIVE REACTION, ELECTROPRODUCTION: JET, PAIR PRODUCTION: P, COLLIDING BEAMS [ELECTRON POSITRON], HADRON [MULTIPLE PRODUCTION], INELASTIC SCATTERING [ELECTRON POSITRON], TRANSVERSE MOMENTUM: DIFFERENTIAL CROSS SECTION, (K+ K-): MASS SPECTRUM, PAIR PRODUCTION: RHO(770)0, ELECTRON POSITRON: COLLIDING BEAMS, RATIO [TOTAL CROSS SECTION], +A2%281310%29+POSITRON+ELECTRON%22">ELECTRON POSITRON --> A2(1310) POSITRON ELECTRON, REVIEW: EXPERIMENTAL RESULTS, POSTULATED PARTICLE: THETA(1640), ELECTROPRODUCTION [JET], A2(1310) [RADIATIVE DECAY], MASS SPECTRUM [(2PI0)], (PI+ PI-) [MASS SPECTRUM], ELECTROPRODUCTION [F(1515)], PI: PAIR PRODUCTION, RATIO: TOTAL CROSS SECTION, TOTAL CROSS SECTION [RATIO], ELECTRON POSITRON: INELASTIC SCATTERING, HADRONIC DECAY: F(1270), HARD SCATTERING: MODEL, CHANNEL CROSS SECTION: ENERGY DEPENDENCE, (2JET) [FINAL STATE], ELECTROPRODUCTION [RHO(770)0], MASS SPECTRUM: (K+ K-), P: ELECTROPRODUCTION, RADIATIVE DECAY [F(1270)], TOTAL CROSS SECTION: RATIO, STRUCTURE FUNCTION [PHOTON], (2K0(S)) [MASS SPECTRUM], MASS ENHANCEMENT [(2100)], TRANSVERSE MOMENTUM: HIGH, F(1515) [RADIATIVE DECAY], HADRON: MULTIPLE PRODUCTION, (PI+ PI- PI0) [MASS SPECTRUM], (2PI0) [MASS SPECTRUM], INCLUSIVE REACTION [ELECTRON POSITRON], RHO(770)0 [PAIR PRODUCTION], MASS SPECTRUM [(K+ K-)], MASS SPECTRUM: (PI+ PI- PI0), HARD SCATTERING [MODEL], F(1515) [HADRONIC DECAY], P: PAIR PRODUCTION, DIFFERENTIAL CROSS SECTION [TRANSVERSE MOMENTUM], RHO(770)0 [ELECTROPRODUCTION], (2100) [MASS ENHANCEMENT], PAIR PRODUCTION [RHO(770)0], PHOTON: STRUCTURE FUNCTION, (2100): MASS ENHANCEMENT, PARTON [MODEL], (2K0(S)): MASS SPECTRUM, PHOTON PHOTON [INTERACTION]
Abstract

40 pp. (1982).

Published
1982

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