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34 results on '"polarization: asymmetry"'

1. Performance measurement of HARPO: A time projection chamber as a gamma-ray telescope and polarimeter

Author

Sho Amano, Philippe Gros, A. Delbart, Haruo Ohkuma, Shuji Miyamoto, P. Poilleux, M. Frotin, Y. Geerebaert, Akinori Takemoto, R. Yonamine, Y. Minamiyama, S. Daté, D. Baudin, P. Bruel, M. Louzir, D. Horan, S. Wang, Masashi Yamaguchi, D. Gotz, I. Semeniouk, P. Baron, Frédéric Magniette, P. Sizun, Satoshi Hashimoto, D. Calvet, D. Bernard, David Attié, B. Giebels, Takuya Kotaka, Paul Colas, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), 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 AIM, and Université Paris Diderot - Paris 7 ( UPD7 ) -Centre d'Etudes de Saclay

Subjects
Pair production, Physics - Instrumentation and Detectors, Gamma ray, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, law.invention, Telescope, High Energy Physics - Experiment (hep-ex), polarization: asymmetry, Optics, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], law, Polarimetry, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], gamma ray: detector, Angular resolution, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], [ PHYS.PHYS.PHYS-INS-DET ] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Instrumentation and Methods for Astrophysics (astro-ph.IM), 010303 astronomy & astrophysics, Physics, Gamma-ray astronomy, beam: polarization, Time projection chamber, 010308 nuclear & particles physics, business.industry, Detector, Astronomy and Astrophysics, Polarimeter, Instrumentation and Detectors (physics.ins-det), time projection chamber, angular resolution, Linear polarisation, TPC, Astrophysics - Instrumentation and Methods for Astrophysics, numerical calculations: Monte Carlo, business, performance, Beam (structure), Fermi Gamma-ray Space Telescope
Abstract

We analyse the performance of a gas time projection chamber (TPC) as a high-performance gamma-ray telescope and polarimeter in the e$^+$e$^-$ pair creation regime. We use data collected at a gamma-ray beam of known polarisation. The TPC provides two orthogonal projections $(x,z)$ and $(y,z)$ of the tracks induced by each conversion in the gas volume. We use a simple vertex finder in which vertices and pseudo-tracks exiting from them are identified. We study the various contributions to the single-photon angular resolution using Monte Carlo simulations and compare them with the experimental data and find that they are in excellent agreement. The distribution of the azimutal angle of pair conversions shows a bias due to the non-cylindrical-symmetric structure of the detector. This bias would average out for a long duration exposure on a space mission, but for this pencil-beam characterisation we have ensured its accurate simulation by a double systematics control scheme, data taking with the detector rotated at several angles with respect to the beam polarisation direction and systematics control with a non-polarised beam. We measure, for the first time, the polarisation asymmetry of a linearly polarised gamma-ray beam in the low energy pair creation regime. This sub-GeV energy range is critical for cosmic sources as their spectra are power laws which fall quickly as a function of increasing energy. This work could pave the way to extending polarised gamma-ray astronomy beyond the MeV energy regime., Comment: Submitted to Astroparticle Physics

Published
2018

2. Probing CP nature of a mediator in associated production of dark matter with single top quark

Author

Belanger, Genevieve, Godbole, Rohini M., Khosa, Charanjit K., Rindani, Saurabh D., Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), and Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)

Subjects
Quantitative Biology::Subcellular Processes, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), polarization: asymmetry, dark matter: associated production, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], FOS: Physical sciences, mediation, top: polarization, pseudoscalar, Computer Science::Computers and Society
Abstract

We consider associated production of dark matter with single top quark, in a simplified dark matter model with spin-0 mediators. The produced top quark is polarized and the polarization depends on the CP of the mediator. We calculate both the cross-section and top polarization for these processes. We compute angular asymmetries which demonstrate the difference between the polarization expected for the scalar or pseudoscalar mediator. Both the cross section and top polarization are sensitive to the CP property of the mediator, depending on the mediator mass. We find that these polarization asymmetries add value to the determination of the CP property of the mediator particularly in the case of a state with indeterminate CP., Comment: 5 pages, 5 figures, proceedings for the 11^\mathrm{th}$ International Workshop on Top Quark Physics, Bad Neuenahr, Germany, September 16--21, 2018

Published
2018

3. Methods for a measurement of $\tau$ polarization asymmetry in the decay $Z\rightarrow \tau\tau$ at LHC and determination of the effective weak mixing angle

Author

Cherepanov, Vladimir, Lohmann, Wolfgang, Institut Pluridisciplinaire Hubert Curien ( IPHC ), Centre National de la Recherche Scientifique ( CNRS ) -Université de Strasbourg ( UNISTRA ), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and HEP, INSPIRE

Subjects
lepton, polarization: longitudinal, tau: decay modes, decay modes, polarization: measured, +tau+tau%22">Z0 --> tau tau, polarization: asymmetry, +Z0%22">p p --> Z0, electroweak interaction, tau: polarization: asymmetry, CMS, High Energy Physics::Phenomenology, Weinberg angle, CERN LEP Stor, ATLAS, sensitivity, helicity, [PHYS.HPHE] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], Automatic Keywords, High Energy Physics - Phenomenology, CERN LHC Coll, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], correlation, analyzing power, [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, spin: longitudinal, parton: density, tau: helicity
Abstract

In this paper a general method to measure the longitudinal polarization of $\tau$ lepton in the process $pp \rightarrow Z^{0} \rightarrow \tau\tau$ is described. The method of optimal observable allows to distinguish between the $\tau$ lepton helicity states with maximum possible sensitivity. The optimal observable for the main $\tau$ decay modes ($e/\mu\nu\nu$, $\pi\nu$, $\rho\nu$, $a_{1}\nu$) that can be identified by CMS or ATLAS detectors is described. The analyzing power for $\tau$ polarization can be further gained by taking into account a correlation between longitudinal spin states of $\tau^{+}$ and $\tau^{-}$. The theoretical systematic uncertainty on the $\tau$ polarization measured using the $\tau \rightarrow 3\pi\nu$ decays is estimated to be $(\Delta P_{\tau})_{model} = (1.41 \pm 1.37)\times 10^{-4}$. This value is approximately 50 times smaller than the best uncertainty on $\tau$ polarization measurement given by combination of all LEP results. An approach to propagate the measured $\tau$ polarization averaged over the $Z^{0}$ lineshape and parton density functions to the electroweak parameters is also discussed.

Published
2018

4. Future DUNE constraints on EFT

Author

Zahra Tabrizi, Adam Falkowski, Giovanni Grilli di Cortona, Laboratoire de Physique Théorique d'Orsay [Orsay] (LPT), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique d'Orsay [Orsay] ( LPT ), and Université Paris-Sud - Paris 11 ( UP11 ) -Centre National de la Recherche Scientifique ( CNRS )

Subjects
Nuclear and High Energy Physics, Particle physics, scale: TeV, media_common.quotation_subject, FOS: Physical sciences, Electron, Computer Science::Digital Libraries, 01 natural sciences, Asymmetry, neutrino: flux, High Energy Physics - Phenomenology (hep-ph), polarization: asymmetry, effective field theory, near detector, parity: violation, 0103 physical sciences, Effective field theory, neutrino: scattering, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, Neutrino Physics, 010306 general physics, media_common, energy: low, Physics, operator: suppression, 010308 nuclear & particles physics, nucleus, Parity (physics), Effective Field Theories, Polarization (waves), sensitivity, Fundamental interaction, High Energy Physics - Phenomenology, operator: higher-dimensional, electron: scattering, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], Beyond Standard Model, Computer Science::Mathematical Software, lcsh:QC770-798, [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], Neutrino, Electron scattering
Abstract

In the near future, fundamental interactions at high-energy scales may be most efficiently studied via precision measurements at low energies. A universal language to assemble and interpret precision measurements is the so-called SMEFT, which is an effective field theory (EFT) where the Standard Model (SM) Lagrangian is extended by higher-dimensional operators. In this paper we investigate the possible impact of the DUNE neutrino experiment on constraining the SMEFT. The unprecedented neutrino flux offers an opportunity to greatly improve the current limits via precision measurements of the trident production and neutrino scattering off electrons and nuclei in the DUNE near detector. We quantify the DUNE sensitivity to dimension-6 operators in the SMEFT Lagrangian, and find that in some cases operators suppressed by an O(30) TeV scale can be probed. We also compare the DUNE reach to that of future experiments involving atomic parity violation and polarization asymmetry in electron scattering, which are sensitive to an overlapping set of SMEFT parameters., 23 pages, 4 figures; v2, agrees the version published in JHEP

Published
2018

5. Lepton polarization asymmetries in rare semi-tauonic $ b \rightarrow s $ exclusive decays at FCC-$ee$

Author

Kamenik, J.F., Monteil, S., Semkiv, A., Silva, L.Vale, Laboratoire de Physique de Clermont ( LPC ), Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Clermont Auvergne ( UCA ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de Physique de Clermont (LPC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Clermont Auvergne (UCA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
B: semileptonic decay, new physics, High Energy Physics::Phenomenology, FOS: Physical sciences, FCC-ee, electron positron: colliding beams, sensitivity, High Energy Physics - Phenomenology, polarization: asymmetry, lepton: flavor: universality, High Energy Physics - Phenomenology (hep-ph), kinematics, statistics, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], lepton: polarization: asymmetry, [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, tau: polarization, lepton: polarization, numerical calculations
Abstract

International audience; We consider measurements of exclusive rare semi-tauonic b-hadron decays, mediated by the $b \rightarrow s \tau ^+ \tau ^-$ transition, at a future high-energy circular electron–positron collider (FCC-ee). We argue that the high boosts of b-hadrons originating from on-shell Z boson decays allow for a full reconstruction of the decay kinematics in hadronic $\tau $ decay modes (up to discrete ambiguities). This, together with the potentially large statistics of $Z\rightarrow b\bar{b}$ , opens the door for the experimental determination of $\tau $ polarizations in these rare b-hadron decays. In the light of the current experimental situation on lepton flavor universality in rare semileptonic B decays, we discuss the complementary short-distance physics information carried by the $\tau $ polarizations and suggest suitable theoretically clean observables in the form of single- and double- $\tau $ polarization asymmetries.

Published
2017

6. $\gamma$-ray polarimetry with conversions to $e^+e^-$ pairs: polarization asymmetry and the way to measure it

Author

Gros, Philippe, Bernard, Denis, 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 ), HARPO, Laboratoire Leprince-Ringuet (LLR), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)

Subjects
electron, Linear polarization, Pair production, Physics - Instrumentation and Detectors, nucleus, Gamma ray, energy spectrum, Azimuthal angle, polarization: monitoring, polarization: asymmetry, statistics, Polarimetry, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Astrophysics - Instrumentation and Methods for Astrophysics, [ PHYS.PHYS.PHYS-INS-DET ] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], positron: momentum
Abstract

We revisit the measurement of the polarization fraction, $P$, and the measurement of the polarization angle of partially linearly-polarized gamma rays using their conversion to $e^+e^-$ pairs in the field of a nucleus. We show that an inappropriate definition of the azimuthal angle, $\varphi$, used to reference the orientation of the final state degrades the precision of the measurement of $P$, by comparison to the optimal case where the bisector angle of the electron and of the positron momenta is used. We then focus on the lowest part of the energy spectrum, below $\approx 10\,$MeV, where a large part of the statistics lie for a cosmic source. We obtain the value of the polarization asymmetry, $A$, of pair conversion at threshold and we show that in the case where the correct expression is used for $\varphi$, the measured value of $A$ tends to the limit., Comment: Published to Astroparticle Physics (2016)

Published
2017

7. Testing physical models for dipolar asymmetry with CMB polarization

Author

K. M. Górski, D. Contreras, J. P. Zibin, Douglas Scott, A. J. Banday, Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Institut de recherche en astrophysique et planétologie ( IRAP ), and Université Paul Sabatier - Toulouse 3 ( UPS ) -Observatoire Midi-Pyrénées ( OMP ) -Centre National de la Recherche Scientifique ( CNRS )

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), satellite: Planck, Primordial fluctuations, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], media_common.quotation_subject, Cosmic microwave background, FOS: Physical sciences, cosmic background radiation: polarization, Astrophysics, 01 natural sciences, Asymmetry, symbols.namesake, polarization: asymmetry, 0103 physical sciences, Planck, 010303 astronomy & astrophysics, media_common, Physics, 010308 nuclear & particles physics, fluctuation: primordial, Planck temperature, Cosmic variance, Polarization (waves), Computational physics, modulation, Amplitude, symbols, fluctuation: statistical, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics, temperature: anisotropy
Abstract

The cosmic microwave background (CMB) temperature anisotropies exhibit a large-scale dipolar power asymmetry. To determine whether this is due to a real, physical modulation or is simply a large statistical fluctuation requires the measurement of new modes. Here we forecast how well CMB polarization data from \Planck\ and future experiments will be able to confirm or constrain physical models for modulation. Fitting several such models to the \Planck\ temperature data allows us to provide predictions for polarization asymmetry. While for some models and parameters \Planck\ polarization will decrease error bars on the modulation amplitude by only a small percentage, we show, importantly, that cosmic-variance-limited (and in some cases even \Planck) polarization data can decrease the errors by considerably better than the expectation of $\sqrt 2$ based on simple $\ell$-space arguments. We project that if the primordial fluctuations are truly modulated (with parameters as indicated by \Planck\ temperature data) then \Planck\ will be able to make a 2$\sigma$ detection of the modulation model with 20--75\% probability, increasing to 45--99\% when cosmic-variance-limited polarization is considered. We stress that these results are quite model dependent. Cosmic variance in temperature is important: combining statistically isotropic polarization with temperature data will spuriously increase the significance of the temperature signal with 30\% probability for \Planck., Comment: 18 pages, 11 figures, 2 tables. Version updated to match PRD version

Published
2017

8. Final COMPASS results on the deuteron spin-dependent structure function gd1 and the Bjorken sum rule

Author

Adolph, C., Aghasyan, M., Augustyniak, W., Kolosov, V. N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V. F., Kotzinian, A. M., Kouznetsov, O. M., Krämer, M., Kremser, P., Krinner, F., Austregesilo, A., Kroumchtein, Z. V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R. P., Lednev, A. A., Lehmann, A., Levillain, M., Levorato, S., Lian, Y.-S., Azevedo, C. D. R., Lichtenstadt, J., Longo, R., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, Gerhard K., Marianski, B., Martin, A., Marzec, J., Badelek, B., Matoušek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G. V., Meyer, M., Meyer, W., Mikhailov, Yu. V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Balestra, F., Miyachi, Y., Nagaytsev, A., Nerling, F., Neyret, D., Nový, J., Nowak, W.-D., Nukazuka, G., Nunes, A. S., Olshevsky, A. G., Orlov, I., Ball, M., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J.-C., Pereira, F., Pešek, M., Peshekhonov, D. V., Pierre, N., Platchkov, S., Barth, J., Pochodzalla, J., Polyakov, V. A., Pretz, Jörg, Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Roskot, M., Beck, R., Rossiyskaya, N. S., Ryabchikov, D. I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V. D., Sandacz, A., Santos, C., Sarkar, S., Savin, I. A., Bedfer, Y., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schönning, K., Seder, E., Selyunin, A., Silva, L., Sinha, L., Bernhard, J., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Akhunzyanov, R., Bicker, K., Szameitat, T., Sznajder, P., Takekawa, S., Tasevsky, M., Tessaro, S., Tessarotto, F., Thibaud, F., Thiel, A., Tosello, F., Tskhay, V., Bielert, E. R., Uhl, S., Vauth, A., Veloso, J., Virius, M., Vondra, J., Wallner, S., Weisrock, T., Wilfert, Malte Christian, Windmolders, R., Wolbeek, J. ter, Birsa, R., Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., Ziembicki, M., Zink, A., COMPASS Collaboration, Bodlak, M., Bordalo, P., Bradamante, F., Braun, C., Bressan, A., Büchele, M., Chang, W.-C., Alexeev, M. G., Chatterjee, C., Chiosso, M., Choi, I., Chung, S.-U., Cicuttin, A., Crespo, M. L., Curiel, Q., Dalla Torre, S., Dasgupta, S. S., Dasgupta, S., Alexeev, G. D., Denisov, Oleg Yu., Dhara, L., Donskov, S. V., Doshita, N., Dreisbach, Ch., Duic, V., Dünnweber, W., Dziewiecki, M., Efremov, A., Eversheim, P. D., Amoroso, A., Eyrich, W., Faessler, M., Ferrero, A., Finger, M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J. M., Frolov, V., Fuchey, E., Andrieux, V., Gautheron, F., Gavrichtchouk, O. P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grabmüller, S., Grasso, A., Grosse-Perdekamp, M., Anfimov, N. V., Grube, B., Grussenmeyer, T., Guskov, A., Haas, F., Hahne, D., Hamar, G., von Harrach, D., Heinsius, F. H., Heitz, R., Herrmann, F., Anosov, V., Horikawa, N., d'Hose, N., Hsieh, C.-Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jary, V., Joosten, R., Augsten, K., Jörg, P., Kabuß, E., Kerbizi, A., Ketzer, B., Khaustov, G. V., Khokhlov, Yu. A., Kisselev, Yu., Klein, F., Klimaszewski, K., and Koivuniemi, J. H.

Subjects
perturbation theory [quantum chromodynamics], deep inelastic scattering [muon deuteron], cross section: ratio, sum rule: Bjorken, polarized target, muon deuteron: deep inelastic scattering, structure function: spin, momentum transfer dependence, COMPASS, energy [beam], beam: energy, scaling: Bjorken, hadronic [final state], renormalization, x-dependence, p: spin, polarization: asymmetry, axial [charge], helicity [quark], strong coupling, quark: helicity, ddc:530, quantum chromodynamics: perturbation theory, charge: axial, Bjorken [sum rule], structure function [deuteron], deuteron: structure function, coupling constant, CERN SPS, spin [p], Bjorken [scaling], kinematics, final state: hadronic, asymmetry [polarization], nucleon: spin, spin [nucleon], muon: polarized beam, ratio [cross section], spin [structure function], polarized beam [muon], statistical, experimental results
Abstract

Physics letters / B 769, 34-41 (2017). doi:10.1016/j.physletb.2017.03.018, Published by North-Holland Publ., Amsterdam

Published
2017

9. Final COMPASS results on the deuteron spin-dependent structure function $g_1^{\rm d}$ and the Bjorken sum rule

Author

Adolph, C., Aghasyan, M., Akhunzyanov, R., Alexeev, M.G., Alexeev, G.D., Amoroso, A., Andrieux, V., Anfimov, N.V., Anosov, V., Augsten, K., Augustyniak, W., Austregesilo, A., Azevedo, C.D.R., Badełek, B., Balestra, F., Ball, M., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bicker, K., Bielert, E. R., Birsa, R., Bodlak, M., Bordalo, P., Bradamante, F., Braun, C., Bressan, A., Büchele, M., Chang, W.-C., Chatterjee, C., Chiosso, M., Choi, I., Chung, S.-U., Cicuttin, A., Crespo, M.L., Curiel, Q., Dalla Torre, S., Dasgupta, S.S., Dasgupta, S., Denisov, O.Yu., Dhara, L., Donskov, S.V., Doshita, N., Dreisbach, Ch., Duic, V., Dünnweber, W., Dziewiecki, M., Efremov, A., Eversheim, P.D., Eyrich, W., Faessler, M., Ferrero, A., Finger, M., Finger Jr., M., Fischer, H., Franco, C., du Fresne von Hohenesche, N., Friedrich, J.M., Frolov, V., Fuchey, E., Gautheron, F., Gavrichtchouk, O.P., Gerassimov, S., Giarra, J., Giordano, F., Gnesi, I., Gorzellik, M., Grabmüller, S., Grasso, A., Grosse Perdekamp, M., Grube, B., Grussenmeyer, T., Guskov, A., Haas, F., Hahne, D., Hamar, G., von Harrach, D., Heinsius, F.H., Heitz, R., Herrmann, F., Horikawa, N., d'Hose, N., Hsieh, C.-Y., Huber, S., Ishimoto, S., Ivanov, A., Ivanshin, Yu., Iwata, T., Jary, V., Joosten, R., Jörg, P., Kabuß, E., Kerbizi, A., Ketzer, B., Khaustov, G.V., Khokhlov, Yu.A., Kisselev, Yu., Klein, F., Klimaszewski, K., Koivuniemi, J.H., Kolosov, V.N., Kondo, K., Königsmann, K., Konorov, I., Konstantinov, V.F., Kotzinian, A.M., Kouznetsov, O.M., Krämer, M., Kremser, P., Krinner, F., Kroumchtein, Z.V., Kulinich, Y., Kunne, F., Kurek, K., Kurjata, R.P., Lednev, A.A., Lehmann, A., Levillain, M., Levorato, S., Lian, Y.-S., Lichtenstadt, J., Longo, R., Maggiora, A., Magnon, A., Makins, N., Makke, N., Mallot, G.K., Marianski, B., Martin, A., Marzec, J., Matoušek, J., Matsuda, H., Matsuda, T., Meshcheryakov, G.V., Meyer, M., Meyer, W., Mikhailov, Yu.V., Mikhasenko, M., Mitrofanov, E., Mitrofanov, N., Miyachi, Y., Nagaytsev, A., Nerling, F., Neyret, D., Nový, J., Nowak, W.-D., Nukazuka, G., Nunes, A.S., Olshevsky, A.G., Orlov, I., Ostrick, M., Panzieri, D., Parsamyan, B., Paul, S., Peng, J.-C., Pereira, F., Pešek, M., Peshekhonov, D.V., Pierre, N., Platchkov, S., Pochodzalla, J., Polyakov, V.A., Pretz, J., Quaresma, M., Quintans, C., Ramos, S., Regali, C., Reicherz, G., Riedl, C., Roskot, M., Rossiyskaya, N.S., Ryabchikov, D.I., Rybnikov, A., Rychter, A., Salac, R., Samoylenko, V.D., Sandacz, A., Santos, C., Sarkar, S., Savin, I.A., Sawada, T., Sbrizzai, G., Schiavon, P., Schmidt, K., Schmieden, H., Schönning, K., Seder, E., Selyunin, A., Silva, L., Sinha, L., Sirtl, S., Slunecka, M., Smolik, J., Srnka, A., Steffen, D., Stolarski, M., Subrt, O., Sulc, M., Suzuki, H., Szabelski, A., Szameitat, T., Sznajder, P., Takekawa, S., Tasevsky, M., Tessaro, S., Tessarotto, F., Thibaud, F., Thiel, A., Tosello, F., Tskhay, V., Uhl, S., Vauth, A., Veloso, J., Virius, M., Vondra, J., Wallner, S., Weisrock, T., Wilfert, M., Windmolders, R., Wolbeek, J. ter, Zaremba, K., Zavada, P., Zavertyaev, M., Zemlyanichkina, E., Zhuravlev, N., Ziembicki, M., Zink, A., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, COMPASS, Institut de Recherches sur les lois Fondamentales de l'Univers ( IRFU ), and Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay

Subjects
cross section: ratio, sum rule: Bjorken, polarized target, FOS: Physical sciences, muon deuteron: deep inelastic scattering, structure function: spin, momentum transfer dependence, COMPASS, beam: energy, High Energy Physics - Experiment, x-dependence, renormalization, scaling: Bjorken, p: spin, High Energy Physics - Experiment (hep-ex), polarization: asymmetry, Spin, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], strong coupling, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], quark: helicity, quantum chromodynamics: perturbation theory, Nuclear Experiment, charge: axial, Parton helicity distributions, hep-ex, High Energy Physics::Phenomenology, coupling constant, deuteron: structure function, CERN SPS, Structure function, kinematics, final state: hadronic, nucleon: spin, High Energy Physics::Experiment, muon: polarized beam, statistical, Particle Physics - Experiment, Deep inelastic scattering, experimental results
Abstract

Final results are presented from the inclusive measurement of deep-inelastic polarised-muon scattering on longitudinally polarised deuterons using a $^6$LiD target. The data were taken at $160~{\rm GeV}$ beam energy and the results are shown for the kinematic range $1~({\rm GeV}/c)^2 < Q^2 < 100~({\rm GeV}/c)^2$ in photon virtuality, $0.004 4~{\rm GeV}/c^2$ in the mass of the hadronic final state. The deuteron double-spin asymmetry $A_1^{\rm d}$ and the deuteron longitudinal-spin structure function $g_1^{\rm d}$ are presented in bins of $x$ and $Q^2$. Towards lowest accessible values of $x$, $g_1^{\rm d}$ decreases and becomes consistent with zero within uncertainties. The presented final $g_1^{\rm d}$ values together with the recently published final $g_1^{\rm p}$ values of COMPASS are used to again evaluate the Bjorken sum rule and perform the QCD fit to the $g_1$ world data at next-to-leading order of the strong coupling constant. In both cases, changes in central values of the resulting numbers are well within statistical uncertainties. The flavour-singlet axial charge $a_0$, {which is identified in the $\overline{\rm MS}$ renormalisation scheme with the total contribution of quark helicities to the nucleon spin}, is extracted from only the COMPASS deuteron data with negligible extrapolation uncertainty: $a_0 (Q^2 = 3~({\rm GeV}/c)^2) = 0.32 \pm 0.02_{\rm stat} \pm0.04_{\rm syst} \pm 0.05_{\rm evol}$. Together with the recent results on the proton spin structure function $g_1^{\rm p}$, the results on $g_1^{\rm d}$ constitute the COMPASS legacy on the measurements of $g_1$ through inclusive spin-dependent deep inelastic scattering., Comment: 16 pages, 6 figures

Published
2016
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10. Some aspects of Compton polarimetry for the ILC at the low beam energy around 5-GeV

Author

Alexander, Gideon and Starovoitov, Pavel

Subjects
positron: polarized beam, polarization: measurement methods, polarization: asymmetry, cross section, asymmetry [polarization], measurement methods [polarization], luminosity, polarized beam [positron], Compton scattering, ILC Coll
Abstract

14 pp. (2007).

Published
2007

11. Precision measurements of the spin-dependent structure functions g$^p_1$ and g$^d_1$ of the proton and the deuteron and extraction of the neutron spin structure function g$^n_1$ at HERMES

Author

Ehrenfried, Markus

Subjects
electron p: deep inelastic scattering, cross section, electron: polarized beam, 27.6 GeV, n: structure function, thesis, deuteron: structure function, structure function: ratio, HERMES, structure function: spin, electron deuteron: deep inelastic scattering, momentum transfer dependence, x-dependence, DESY HERA Stor, polarization: asymmetry, polarized target: internal, p: structure function, experimental results
Abstract

Friedrich-Alexander-Universität Erlangen-Nürnberg, Diss., 2005; 127 pp., (2005). doi:10.3204/DESY-THESIS-2005-041, Published by Deutsches Elektronen-Synchrotron, DESY, Hamburg

Published
2005
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12. The first measurement of the tensor structure function $\mathrm{b^d_1}$ of the deuteron with the HERMES-experiment

Author

Riedl, Caroline

Subjects
positron: polarized beam, Born approximation, deuteron: polarized target, sea [quark], deep inelastic scattering [positron deuteron], tensor [polarization], HERMES, momentum transfer dependence, tensor [structure function], x-dependence, polarization: asymmetry, structure function: tensor, structure function: moment, quark: sea, structure function [deuteron], polarization: tensor, 27.6 GeV, deuteron: structure function, thesis, bibliography, polarization [quark], multiple scattering, sum rule, DESY HERA Stor, positron deuteron: deep inelastic scattering, asymmetry [polarization], shadowing, polarized beam [positron], moment [structure function], quark: polarization, polarized target [deuteron], experimental results
Abstract

Friedrich-Alexander-Universität Erlangen-Nürnberg, Diss., 2005; 158 pp., (2005). doi:10.3204/DESY-THESIS-2005-027, Published by Deutsches Elektronen-Synchrotron, DESY, Hamburg

Published
2005

13. First measurement of the tensor structure function $b_1$ of the deuteron

Author

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

Subjects
deuteron: polarized target, DESY HERA Stor, positron deuteron: deep inelastic scattering, polarization: asymmetry, 27.6 GeV/c, polarization: tensor, deuteron: structure function, HERMES, structure function: moment, momentum transfer dependence, x-dependence, experimental results
Abstract

Physical review letters 95(24), 242001 (2005). doi:10.1103/PhysRevLett.95.242001, Published by APS, College Park, Md.

Published
2005
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14. The gain to polarimetry and $A_{LR}$ measurements from a polarised positron beam in TESLA

Author

Alexander, G. and Reinherz-Aronis, E.

Subjects
positron: polarized beam, longitudinal [polarization], polarized beam [electron], electron: polarized beam, polarization: longitudinal, numerical calculations: DESY TESLA Linac, electron positron: colliding beams, cross section: polarization, DESY TESLA Linac [numerical calculations], polarization: asymmetry, polarization: measurement, 500 GeV-cms [92], asymmetry [polarization], colliding beams [electron positron], polarization [cross section], measurement [polarization], polarized beam [positron], 92: 500 GeV-cms
Abstract

17 pp. (2003)., A thorough analysis is presented on the benefits gained for the left-right asymmetry $A_{LR}$ and beam polarisation measurements by adding a longitudinal polarised positron beam to the $e^+e^−$ linear collider TESLA. Two centre of mass energies were considered, 91 and 500 GeV, where it is assumed that data was collected with a total luminosity of 30 $fb^{−1}$ and 500 $fb^{−1}$ respectively. In the analysis we consider 4-bunch spin-spin configurations setups according to the Blondel scheme and an alternative scheme. The results of these operating modes are compared to the case where the beam polarisations are measured by polarimeters which have a precision of 0.5% and to the situation where only the electron beam is polarised. Whereas a dramatic improvement in the statistical error of ALR is achieved at 91 GeV by the application of the alternative Blondel four-spin configuration scheme, the gain at 500 GeV is rather moderate and is in the range 50 to 70 % for $A_{LR}$=0.15 and about 300% for $A_{LR}$=0.5.

Published
2003

15. Polarized beams and the top threshold

Author

Kuhn, Johann H.

Subjects
top [quark], positron: polarized beam, polarized beam [electron], electron: polarized beam, quark: decay, polarization [quark], annihilation [electron positron], electron positron: annihilation, quark: pair production, polarization: asymmetry, statistical analysis, pair production [quark], asymmetry [polarization], threshold, polarized beam [positron], decay [quark], quark: polarization, numerical calculations, quark: top
Abstract

7 pp. (2001).

Published
2001
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16. Possible test of the GUT relation between $M(1)$ and $M(2)$ in electron photon scattering

Author

Blochinger, Claus and Fraas, Hans

Subjects
polarized beam [electron], associated production [sparticle], gaugino: mass, electron: polarized beam, neutralino: electroproduction, exclusive reaction [photon electron], electroproduction [neutralino], channel cross section: mass, selectron: mass, mass [selectron], mass [LSP], polarization: asymmetry, selectron: electroproduction, numerical calculations, mass [gaugino], electron positron: interaction, +neutralino+selectron%22">photon electron --> neutralino selectron, sparticle: associated production, polarized beam [photon], photon: polarized beam, mass [channel cross section], backscatter: laser, electroproduction [selectron], photon electron: exclusive reaction, asymmetry [polarization], interaction [electron positron], supersymmetry, laser [backscatter], LSP: mass, 500 GeV-cms (electron positron)
Abstract

10 pp. (2000)., We investigate associated production of selectrons and the lightest neutralino (LSP) in the process $e^- + \gamma -->\tilde \chi^0_1 + \tilde e^-_{L/R}$ with the selectron subsequently decaying into an electron and the LSP. Total cross sections and various polarization asymmetries are calculated for photons produced by Compton backscattering of a polarized laser beam at an $e^+e^-$ linear collider with CMS energy $\sqrt{s_{ee}}=500$ GeV and with polarized beams. The total cross section and in particular the polarization asymmetries show a characteristic dependence on the gaugino mass parameter $M_1$. Therefore this process is suitable for testing the GUT relation $M_1=M_2\cdot{5/3}\tan^2\theta_W $.

Published
2000
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17. Phenomenology of stops, sbottoms, $\tau$ sneutrinos, and staus at an $e+ e-$ linear collider

Author

Bartl, A., Eberl, H., Kraml, S., Majerotto, W., and Porod, W.

Subjects
positron: polarized beam, polarized beam [electron], electron: polarized beam, width [sparticle], branching ratio [sparticle], 500-1000 GeV-cms, top [squark], mixing angle, annihilation [electron positron], electron positron: annihilation, p p: inclusive reaction, anti-p p: annihilation, polarization: asymmetry, bottom [squark], squark: top, radiative correction, ddc:530, channel cross section: energy dependence, numerical calculations, Obernai 1999/10/16 [talk], talk: Obernai 1999/10/16, annihilation [anti-p p], sparticle: electroproduction, slepton, sneutrino/tau, bibliography, sparticle: hadroproduction, energy dependence [channel cross section], sparticle: decay modes, electroproduction [sparticle], squark: bottom, asymmetry [polarization], sparticle: width, sparticle: branching ratio, decay modes [sparticle], polarized beam [positron], supersymmetry, hadroproduction [sparticle], inclusive reaction [p p]
Abstract

Berlin : Springer (2000). doi:10.1007/s1010500c0006, We discuss production and decays of stops, sbottoms, tau-sneutrinos, and staus in $e^+e^-$ annihilation in the energy range $\sqrt{s} = 0.5-1$ TeV. We present numerical predictions within the Minimal Supersymmetric Standard Model for cross sections and decay rates, including one-loop radiative corrections as well as initial state radiation. We also study the importance of beam polarization for the determination of the underlying SUSY parameters. Moreover, we make a comparison of the potential to study squarks and sleptons of the 3rd generation between Tevatron, LHC, and Linear Collider., Published by Springer, Berlin

Published
2000

18. Radiative corrections to chargino production in electron positron collisions

Author

Blank, T. and Hollik, W.

Subjects
angular distribution: asymmetry, Feynman graph: higher-order, on-shell [renormalization], polarized beam, annihilation [electron positron], electron positron: annihilation, chargino: pair production, polarization: asymmetry, renormalization: on-shell, asymmetry [angular distribution], pair production [chargino], 500 GeV-cms, asymmetry [polarization], radiative correction, higher-order [Feynman graph], supersymmetry, numerical calculations
Abstract

12 pp. (2000)., The results of a complete one-loop calculation for the production of chargino pairs in electron-positron collisions, including the option of polarized beams, are presented. The calculation has been performed in the on-shell renormalization scheme. Applications to the integrated cross section, to the forward-backward asymmetry for unpolarized beams, and to the left-right asymmetry show that the higher-order effects have a sizeable influence on the theoretical predictions and therefore should be properly taken into account for detailed studies in the MSSM.

Published
2000

19. Measurement of the spin asymmetry in the photoproduction of pairs of high $\mathrm{p_T}$ hadrons at HERMES

Author

Airapetian, A., Akopov, N., Amarian, M., Aschenauer, E. C., Avakian, H., Avakian, R., Avetissian, A., Bains, B., Baumgarten, C., Beckmann, M., Belostotski, S., Belz, J. E., Benisch, Th., Bernreuther, S., Bianchi, N., Blouw, J., Bottcher, H., Borissov, A., Brack, J., Brauksiepe, S., Braun, B., Bruckner, W., Brull, A., Bulten, H. J., Capitani, G. P., Carter, P., Chumney, P., Cisbani, E., Court, G. R., Dalpiaz, P. F., De Sanctis, E., De Schepper, D., Devitsin, E., De Witt Huberts, P. K. A., Di Nezza, P., Duren, M., Dvoredsky, A., Elbakian, G., Ely, J., Fantoni, A., Ferstl, M., Fiedler, K., Filippone, B. W., Fischer, H., Fox, B., Franz, J., Frullani, S., Funk, M.-A., Garber, Y., Garibaldi, F., Gavrilov, G., Geiger, P., Gharibyan, V., Golendukhin, A., Graw, G., Grebeniouk, O., Green, P. W., Greeniaus, L. G., Grosshauser, C., Guidal, M., Gute, A., Haeberli, W., Hansen, J.-O., Hasch, D., Hausser, O., Heinsius, F. H., Henderson, R., Henoch, M., Hertenberger, R., Holler, Y., Holt, R. J., Hoprich, W., Ihssen, H., Iodice, M., Izotov, A., Jackson, H. E., Jgoun, A., Kaiser, R., Kinney, E., Kisselev, A., Kitching, P., Kobayashi, H., Koch, N., Konigsmann, K., Kolstein, M., Kolster, H., Korotkov, V., Korsch, W., Kozlov, V., Kramer, L. H., Kurisuno, M., Kyle, G., Lachnit, W., Lorenzon, W., Makins, N. C. R., Martens, F. K., Martin, J. W., Masoli, F., Mateos, A., McAndrew, M., McIlhany, K., McKeown, R. D., Meissner, F., Menden, F. M., Metz, A., Meyners, N., Mikloukho, O., Miller, C. A., Miller, M. A., Milner, R., Most, A., Muccifora, V., Naryshkin, Y., Nathan, A. M., Neunreither, F., Niczyporuk, M., Nowak, W.-D., O'Neill, T. G., Openshaw, R., Ouyang, J., Owen, B. R., Pate, S. F., Potashov, S., Potterveld, D. H., Rakness, G., Redwine, R., Reolon, A. R., Ristinen, R., Rith, K., Rossi, P., Rudnitsky, S., Ruh, M., Ryckbosch, D., Sakemi, Y., Scarlett, C., Schafer, A., Schmidt, F., Schmitt, H., Schnell, G., Schuler, K. P., Schwind, A., Seibert, J., Shibata, T.-A., Shibatani, K., Shin, T., Shutov, V., Simani, C., Simon, A., Sinram, K., Slavich, P., Spengos, M., Steffens, E., Stenger, J., Stewart, J., Stoesslein, U., Sutter, M., Tallini, H., Taroian, S., Terkulov, A., Tipton, B., Tytgat, M., Uriuoli, G. M., Van De Vyver, R., Van Den Brand, J. F. J., Van Der Steenhoven, G., Van Hunen, J. J., Vetterli, M. C., Vikhrov, V., Vincter, M. G., Visser, J., Volk, E., Wander, W., Wendland, J., Williamson, S. E., Wise, T., Woller, K., Yoneyama, S., and Zohrabian, H.

Subjects
positron: polarized beam, DESY HERA Stor, 27.5 GeV, polarization: asymmetry, positron p: deep inelastic scattering, +hadron%2B+hadron-+positron+anything%22">positron p --> hadron+ hadron- positron anything, polarization: longitudinal, polarized target: internal, HERMES, gluon: polarization, hadron: pair production, experimental results
Abstract

Physical review letters 84(12), 2584 - 2588 (2000). doi:10.1103/PhysRevLett.84.2584, We present a measurement of the longitudinal spin asymmetry A_|| in photoproduction of pairs of hadrons with high transverse momentum p_T. Data were accumulated by the HERMES experiment using a 27.5 GeV polarized positron beam and a polarized hydrogen target internal to the HERA storage ring. For h+h- pairs with p_T^h_1 > 1.5 GeV/c and p_T^h_2 > 1.0 GeV/c, the measured asymmetry is A_|| = -0.28 +/- 0.12 (stat.) +/- 0.02 (syst.). This negative value is in contrast to the positive asymmetries typically measured in deep inelastic scattering from protons, and is interpreted to arise from a positive gluon polarization., Published by APS, College Park, Md.

Published
2000
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20. The Use of positron polarization for precision measurements

Author

Moenig, Klaus

Subjects
positron: polarized beam, channel cross section, polarized beam [electron], electron: polarized beam, annihilation [electron positron], electron positron: annihilation, fermion: pair production, W: pair production, polarization: asymmetry, 340: 500 GeV-cms, pair production [W], asymmetry [polarization], polarized beam [positron], numerical calculations, pair production [fermion], 500 GeV-cms [340]
Abstract

7 pp. (2000).

Published
2000

21. Electroweak studies at a linear collider Z factory

Author

Moenig, Klaus

Subjects
positron: polarized beam, angular distribution: asymmetry, polarized beam [electron], electroproduction [Z0], electron: polarized beam, hadronic decay [Z0], bottom: pair production, annihilation [electron positron], mass [Higgs particle], electron positron: annihilation, approx. 91 GeV-cms, validity test [electroweak interaction], pair production [bottom], width [Z0], polarization: asymmetry, Higgs particle: mass, asymmetry [angular distribution], asymmetry [polarization], electroweak interaction: validity test, polarized beam [positron], Z0: width, numerical calculations, Z0: hadronic decay, Z0: electroproduction
Abstract

13 pp. (1999).

Published
1999

22. Constraints on couplings of extra gauge bosons from $e^+ e^- \to \nu \bar\nu \gamma$

Author

Godfrey, Stephen, Kalyniak, Pat, Kamal, Basim, and Leike, Arnd

Subjects
channel cross section, +neutrino+antineutrino+photon%22">electron positron --> neutrino antineutrino photon, polarized beam [electron], neutrino: pair production, electron: polarized beam, vertex function: (W' neutrino antineutrino), pair production [neutrino], (Z' neutrino antineutrino) [vertex function], annihilation [electron positron], electron positron: annihilation, (W' neutrino antineutrino) [vertex function], photon: associated production, electroweak interaction: model, polarization: asymmetry, Z', 500 GeV-cms, associated production [photon], vertex function: (Z' neutrino antineutrino), asymmetry [polarization], model [electroweak interaction], W', numerical calculations, talk
Abstract

9 pp. (1999)., If extra gauge bosons are observed at the LHC or at a linear $e^+e^-$ collider, the reaction $e^+e^- \to \nu \bar\nu \gamma$ can give information on the couplings ($W' \nu l$) and ($Z' \nu \bar\nu$). The total cross section and polarization asymmetries are the most sensitive observables for such a measurement. Small systematic errors are crucial to obtain reasonable coupling constraints, especially for a high luminosity collider.

Published
1999

23. Resonant production of heavy MSSM Higgs bosons at the Photon Collider

Author

José Ignacio Illana Calero

Subjects
talk: Oxford 1999/03/20, pseudoscalar particle [Higgs particle], photon electron: Compton scattering, channel cross section: mass, decay modes [Higgs particle], FOS: Physical sciences, energy spectrum [photon], interaction [photon photon], photon photon: interaction, polarization: asymmetry, High Energy Physics - Phenomenology (hep-ph), luminosity, 500: 800 GeV-cms (electron positron), Compton scattering [photon electron], numerical calculations, background, High Energy Physics::Phenomenology, electron positron: colliding beams, backscatter: laser, mass [Higgs particle], mass [channel cross section], photon: energy spectrum, helicity, photon: polarization, Oxford 1999/03/20 [talk], High Energy Physics - Phenomenology, 800 GeV-cms (electron positron) [500], Higgs particle: scalar particle, Higgs particle: mass, photoproduction [Higgs particle], asymmetry [polarization], Higgs particle: photoproduction, colliding beams [electron positron], Physics::Accelerator Physics, High Energy Physics::Experiment, supersymmetry, Higgs particle: decay modes, laser [backscatter], scalar particle [Higgs particle], Higgs particle: pseudoscalar particle, polarization [photon]
Abstract

22 pp. (1999)., Assuming a light Higgs boson is discovered, its nature may remain unknown in case that no supersymmetric particles are found. The detection and study of heavier Higgs particles is then of great interest. For this purpose the Compton-collider option of a high energy e+e- linear collider is optimal both to produce Higgs bosons and to reveal their CP-parity. Assuming realistic photon luminosities for various configurations of laser and linac polarizations, we study the heavy, neutral MSSM Higgs signals for the most relevant decay modes as well as their corresponding backgrounds. The MSSM H and A Higgs bosons with masses up to a ~80% of the linac c.m.s. energy may be observed and their CP-parity tested for Higgs masses ~450 GeV, at the $\gamma\gamma$ mode of a ~1 TeV linear collider.

Published
1999
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24. Four-Fermi Effective Operators in Top-Quark Production and Decay

Author

Zenrō Hioki, Michał Szafrański, and Bohdan Grzadkowski

Subjects
Nuclear and High Energy Physics, Particle physics, Top quark, polarization: longitudinal, FOS: Physical sciences, top, annihilation [electron positron], electron positron: annihilation, quark: semileptonic decay, High Energy Physics - Experiment, bottom, Nuclear physics, High Energy Physics - Experiment (hep-ex), polarization: asymmetry, High Energy Physics - Phenomenology (hep-ph), model [electroweak interaction], ddc:530, semileptonic decay [quark], angular distribution, numerical calculations, energy spectrum: (lepton), Physics, longitudinal [polarization], effective Lagrangian, 500: 750: 1000 GeV-cms, 750: 1000 GeV-cms [500], (lepton) [energy spectrum], electroweak interaction: model, quark: pair production, High Energy Physics - Phenomenology, Pair production, pair production [quark], differential cross section, asymmetry [polarization], Physics::Accelerator Physics, Production (computer science), High Energy Physics::Experiment, four-fermion interaction, Beam (structure), Fermi Gamma-ray Space Telescope
Abstract

2nd Workshop of the 2nd Joint ECFA / DESY Study on Physics and Detectors for a Linear Electron Positron Collider, Lund, Sweden, 28 Jun 1998 - 30 Jun 1998; Physical review / D 58(3), 035002 (1998). doi:10.1103/PhysRevD.58.035002, Effects of four-Fermi-type new interactions are studied in top-quark pair production and their subsequent decays at future $e^+e^-$ colliders. Secondary-lepton-energy distributions are calculated for arbitrary longitudinal beam polarizations. An optimal-observables procedure is applied for the determination of new parameters., Published by Inst., Woodbury, NY

Published
1997
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25. The Bethe-Heitler process in polarized photon - nucleon interactions

Author

Gehrmann, T. and Stratmann, M.

Subjects
lepton: massive, nucleon: polarized target, polarization: asymmetry, lepton: pair production, Feynman graph, polarization: longitudinal, approximation: Bethe-Heitler, target: mass, photon nucleon: inclusive reaction
Abstract

Physical review / D 56(9), 5839 - 5843 (1997). doi:10.1103/PhysRevD.56.5839, We calculate the Bethe-Heitler cross section for the production of lepton pairs in the field of a longitudinally polarized nucleon, taking into account the lepton masses and the target mass. This process is a dominant background to the detection of open charm from semi-leptonic decay modes, which is a potential probe of the polarized gluon distribution in the nucleon., Published by Inst., Woodbury, NY

Published
1997
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26. A Novel approach to confront electroweak data and theory

Author

Hagiwara, Kaoru, Matsumoto, S., Haidt, D., and Kim, C. S.

Subjects
annihilation: electron positron, mass: top, interaction [neutrino electron], interaction [neutrino nucleon], annihilation [electron positron], W [hadroproduction], Higgs particle [mass], neutrino nucleon: interaction, validity test [electroweak interaction], II-e-4 [inspirereview], charged current, top [mass], polarization: asymmetry, strong interaction: coupling constant, parity: atomic physics, validity test: electroweak interaction, interaction: neutrino electron, pair production: fermion, electroweak interaction [validity test], form factor, inspirereview:II-e-4, gauge boson [mass], interaction: neutrino nucleon, mass [gauge boson], hadroproduction [W], neutrino nucleon [interaction], mass [W], Higgs particle: mass, mass [top], asymmetry [polarization], atomic physics [parity], electroweak interaction: validity test, W: mass, gauge boson: mass, S-matrix, coupling constant [strong interaction], pair production [fermion], SU(2) x U(1) [gauge field theory], neutral current, strong interaction [coupling constant], review, top: mass, neutrino electron: interaction, electron positron: annihilation, polarization [asymmetry], W: hadroproduction, asymmetry: polarization, numerical calculations: interpretation of experiments, interpretation of experiments [numerical calculations], W [mass], ddc:530, parity [atomic physics], correction: higher-order, mass: Higgs particle, gauge boson: propagator, electron positron [annihilation], fermion [pair production], higher-order [correction], mass: gauge boson, parametrization, bibliography, neutrino electron [interaction], atomic physics: parity, mass [Higgs particle], fermion: pair production, hadroproduction: W, gauge field theory: SU(2) x U(1), propagator [gauge boson], coupling constant: strong interaction, mass: W
Abstract

152 pp. (1995)., A novel approach to study electroweak physics at one-loop level in generic ${\rm SU(2)_L \times U(1)_Y}$ theories is introduced. It separates the 1-loop corrections into two pieces: process specific ones from vertex and box contributions, and universal ones from contributions to the gauge boson propagators. The latter are parametrized in terms of four effective form factors $\bar{e}^2(q^2)$, $\bar{s}^2(q^2)$, $\bar{g}_Z^2(q^2)$ and $\bar{g}_W^2 (q^2)$ corresponding to the $\gamma\gamma$, $\gamma Z$, $ZZ$ and $WW$ propagators. Under the assumption that only the Standard Model contributes to the process specific corrections, the magnitudes of the four form factors are determined at $q~2=0$ and at $q^2=m^2_Z$ by fitting to all available precision experiments. These values are then compared systematically with predictions of ${\rm SU(2)_L \times U(1)_Y}$ theories. In all fits $\alpha_s(m_Z)$ and $\bar{\alpha}(m_Z^2)$ are treated as external parameters in order to keep the interpretation as flexible as possible. The treatment of the electroweak data is presented in detail together with the relevant theoretical formulae used to interpret the data. No deviation from the Standard Model has been identified. Ranges of the top quark and Higgs boson masses are derived as functions of $\alpha_s(m_Z)$ and $\bar{\alpha}(m^2_Z)$. Also discussed are consequences of the recent precision measurement of the left-right asymmetry at SLC as well as the impact of a top quark mass and an improved $W$ mass measurement.

Published
1995
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27. Bounds on radii and anomalous magnetic dipole moments of quarks and leptons from LEP, SLC and HERA

Author

Köpp, G., Schaile, D., Spira, M., and Zerwas, P. M.

Subjects
annihilation: electron positron, interaction: electron quark, electron p: interaction, annihilation [electron positron], charged current, polarization: asymmetry, quark [magnetic moment], pair production: fermion, quark: magnetic moment, magnetic moment [quark], Z0: decay modes, electron quark [interaction], lepton: magnetic moment, interaction [electron p], electron quark: interaction, asymmetry [angular distribution], asymmetry [polarization], decay modes: Z0, lepton: form factor, interaction: electron p, upper limit, pair production [fermion], asymmetry: angular distribution, angular distribution: asymmetry, neutral current, electron positron: annihilation, form factor [lepton], lepton [magnetic moment], polarization [asymmetry], asymmetry: polarization, numerical calculations: interpretation of experiments, interaction [electron quark], magnetic moment: lepton, magnetic moment [lepton], interpretation of experiments [numerical calculations], quark: form factor, ddc:530, Z0: width, lepton [form factor], electron positron [annihilation], electron p [interaction], fermion [pair production], fermion: pair production, decay modes [Z0], form factor [quark], Z0 [decay modes], form factor: quark, form factor: lepton, width [Z0], quark [form factor], magnetic moment: quark, angular distribution [asymmetry]
Abstract

10 pp. (1995)., Leptons, quarks and gauge bosons are assumed to be pointlike particles in the Standard Model. Stringent bounds on the radii of quarks and leptons and their weak anomalous magnetic moments can be derived from the high-precision measurements at LEP and SLC. We find a model-independent bound ofR≲10−17 cm for quark and lepton radii. HERA will provide complementary information on the electromagnetic static properties of the quarks and the parameters of the charged quark currents.

Published
1995

28. Prospects of measuring the parity of Higgs particles

Author

Krämer, M., Kühn, J., Stong, M. L., and Zerwas, Peter

Subjects
annihilation: electron positron, Higgs particle: width, parity [Higgs particle], Higgs particle: parity, pair production [gauge boson], decay modes [Higgs particle], Higgs particle [production], branching ratio [Higgs particle], gauge boson [pair production], annihilation [electron positron], electron positron: annihilation, polarization [asymmetry], width [Higgs particle], neutral particle [Higgs particle], interaction [photon photon], photon photon: interaction, asymmetry: polarization, parity: Higgs particle, polarization: asymmetry, ddc:530, Higgs particle [parity], pair production: fermion, gauge boson: pair production, electron positron [annihilation], production: Higgs particle, fermion [pair production], photon photon [interaction], electroweak interaction, Higgs particle: neutral particle, pair production: gauge boson, polarized beam [photon], photon: polarized beam, polarized beam: photon, Monte Carlo [numerical calculations], fermion: pair production, decay modes: Higgs particle, Higgs particle: branching ratio, interaction: photon photon, production [Higgs particle], Higgs particle: production, Higgs particle [decay modes], asymmetry [polarization], supersymmetry, numerical calculations: Monte Carlo, Higgs particle: decay modes, pair production [fermion], photon [polarized beam]
Abstract

37 pp. (1994)., We analyze the prospects of measuring the parity of Higgs particles in the Standard Model and its supersymmetric extensions. Higgs decays are discussed in this context as well as production processes including, in particular, the fusion of Higgs particles in linearly polarized photon--photon collisions.

Published
1994

29. Precise measurement of the left-right cross-section asymmetry in Z boson production by $e^+ e^-$ collisions

Author

Abe, K., Abt, I., Ash, W. W., Aston, D., Bacchetta, N., Baird, K. G., Baltay, C., Band, H. R., Barakat, M. B., Baranko, G. J., Bardon, O., Barklow, T., Bazarko, A. O., Ben-David, R., Benvenuti, A. C., Bienz, T., Bilei, G. M., Bisello, D., Blaylock, G., Bogart, J. R., Bolton, T., Bower, G. R., Brau, J., Breidenbach, M., Bugg, W. M., Burke, D., Burnett, T. H., Burrows, P. N., Busza, W., Calcaterra, A., Caldwell, David O., Calloway, D., Camanzi, B., Carpinelli, M., Cassell, R., Castaldi, R., Castro, A., Cavalli-Sforza, M., Church, E., Cohn, H. O., Coller, J. A., Cook, V., Cotton, R., Cowan, R. F., Coyne, D. G., D'Oliveira, A., Damerell, C. J. S., Dasu, S., Decker, F. J., De Sangro, R., De Simone, P., Dell'Orso, R., Du, P. Y. C., Dubois, R., Duboscq, J. E., Eisenstein, Bob I., Elia, R. D., Emma, P., Fan, C., Fero, M. J., Frey, R., Furuno, K., Garwin, Edward L., Gillman, T., Gladding, G., Gonzalez, S., Hallewell, G. D., Hart, E. L., Hasegawa, Y., Hedges, S., Hertzbach, Stanley S., Hildreth, M. D., Hitlin, D. G., Huber, Jennifer S., Huffer, M. E., Hughes, E. W., Hwang, H., Iwasaki, Y., Izen, J. M., Jacques, P., Jaros, J., Johnson, A. S., Johnson, J. R., Johnson, R. A., Junk, T., Kajikawa, R., Kalelkar, M., Karliner, I., Kawahara, H., Kelsey, M. H., Kendall, H. W., King, M. E., King, R., Kofler, R. R., Krishna, N. M., Kroeger, R. S., Kwon, Y., Labs, J. F., Langston, M., Lath, A., Lauber, J. A., Leith, David W. G. S., Limberg, T., Liu, X., Loreti, M., Lu, A., Lynch, H. L., Ma, J., Mancinelli, G., Manly, S., Mantovani, G., Markiewicz, Thomas W., Maruyama, T., Masuda, H., Mazzucato, E., McGowan, J. F., McKemey, A. K., Meadows, B. T., Messner, R., Mockett, P. M., Moffeit, K. C., Mours, B., Muller, G., Muller, D., Nagamine, T., Nauenberg, U., Neal, H., Nussbaum, M., Osborne, L. S., Panvini, R. S., Park, H., Pavel, T. J., Peruzzi, I., Pescara, L., Piccolo, M., Piemontese, L., Pieroni, E., Pitts, K. T., Plano, R. J., Prepost, R., Prescott, C. Y., Punkar, G. D., Quigley, J., Ratcliff, B. N., Reeves, T. W., Rensing, P. E., Rochester, L. S., Rothberg, J. E., Rowson, P. C., Russell, J. J., Saxton, O., Schalk, T., Schindler, R. H., Schneekloth, U., Schultz, D., Schumm, B., Seiden, A., Sen, S., Shaevitz, M. H., Shank, J. T., Shapiro, G., Shapiro, S. L., Sherden, D. J., Simopoulos, C., Smith, S. R., Snyder, J. A., Sokoloff, M. D., Stamer, P., Steiner, H., Steiner, R., Strauss, Michael G., Su, D., Suekane, F., Sugiyama, A., Suzuki, S., Swartz, M., Szumilo, A., Takahashi, T., Taylor, F. E., Torrence, E., Turk, J. D., Usher, T., Va'vra, Jaroslav, Vannini, C., Vella, E., Venuti, J. P., Verdini, P. G., Wagner, S., Waite, A. P., Watts, S. J., Weidemann, A. W., Whitaker, John Scott, White, S. L., Wickens, F. J., Williams, D. A., Williams, D. C., Williams, S. H., Willocq, Stephane, Wilson, R. J., Wisniewski, William J., Woods, M., Word, G. B., Wyss, J., Yamamoto, R. K., Yamartino, J. M., Yellin, S. J., Young, C. C., Yuta, H., Zapalac, G., Zdarko, R. W., Zeitlin, C., and Zhou, J.

Subjects
tau: pair production, electron: polarized beam, polarization: longitudinal, SLD, Weinberg angle, electron positron: colliding beams, electron positron: annihilation, SLAC SLC Linac, Z0: nonleptonic decay, polarization: asymmetry, Z0: leptonic decay, 91.28 GeV-cms, Z0: electroproduction, experimental results
Abstract

Physical review letters 73(1), 25 - 29 (1994). doi:10.1103/PhysRevLett.73.25, Published by APS, College Park, Md.

Published
1994
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30. Exclusive non-leptonic charm baryon decays

Author

Körner, J. G. and Krämer, M.

Subjects
wave function [ground state], amplitude analysis [helicity], polarization [asymmetry], invariance: Lorentz, spin, W: exchange, width [charmed baryon], asymmetry: polarization, polarization: asymmetry, factorization, ddc:530, symmetry: SU(4), angular distribution, spectator [model], Lorentz [invariance], numerical calculations, nonleptonic decay [charmed baryon], charmed baryon: width, charmed baryon: nonleptonic decay, helicity: amplitude analysis, exchange: W, charmed baryon [nonleptonic decay], quark: flavor, bibliography, SU(4) [symmetry], W [exchange], ground state: wave function, nonleptonic decay: charmed baryon, asymmetry [polarization], current algebra, flavor [quark], model: spectator, exchange [W]
Abstract

29 pp. (1992)., We present a spectator quark model calculation of the Cabibbo-enhanced non-leptonic decays of the lowest lying charm baryons $Λ_c, Ξc$ and $Ω_c$ decaying into non-charm ground state baryons and mesons. We employ covariant quark model wave functions to describe the ground state baryons and mesons. They are obtained by boosting rest frame wave functions to equal velocity frames. The non-leptonic decay amplitudes are then obtained in terms of two wave function overlap parameters which we fit to the experimental data. We discuss general features of the flavour and helicity composition of the final states in the quark model approach. We emphasize thatW-exchange contributions are of crucial importance for the description of non-leptonic charm baryon decay data. We calculate rates and polarization asymmetry parameters and compare them to existing data as well as to soft-meson plus current algebra calculations.

Published
1992
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31. STANDARD AND NONSTANDARD HIGGS BOSONS IN ELECTROWEAK RADIATIVE CORRECTIONS

Author

Hollik, Wolfgang

Subjects
SU(2) x U(1) [gauge field theory], Yukawa [coupling], lepton: pair production, PAIR PRODUCTION [LEPTON], annihilation [electron positron], RATIO [CHANNEL CROSS SECTION], electron positron: annihilation, Z0: mass, effect [Higgs particle], mass [Z0], polarization: asymmetry, CHANNEL CROSS SECTION: RATIO, NUMERICAL CALCULATIONS, elastic scattering [neutrino electron], radiative correction, PAIR PRODUCTION: LEPTON, Higgs particle: effect, LEPTON [PAIR PRODUCTION], perturbation theory: higher-order, Weinberg angle, neutrino electron: elastic scattering, ANNIHILATION: ELECTRON POSITRON, higher-order [perturbation theory], mass [W], ELECTRON POSITRON [ANNIHILATION], gauge field theory: SU(2) x U(1), asymmetry [polarization], W: mass, talk, coupling: Yukawa
Abstract

15 pp. (1986).

Published
1986

32. Physics Interest in Polarized $e^+ e^-$ Reactions at {PETRA} / {PEP} Energies

Author

Bienlein, J. K.

Subjects
LECTURES, INTERFERENCE: ELECTROWEAK, POLARIZED BEAM: ELECTRON, ELECTRON [POLARIZED BEAM], POSITRON [POLARIZED BEAM], SPIN [EFFECT], LONGITUDINAL [POLARIZATION], POLARIZED BEAM: POSITRON, ELECTRON: POLARIZED BEAM, POLARIZATION [ASYMMETRY], ELECTROWEAK [INTERFERENCE], POLARIZED BEAM [ELECTRON], POLARIZATION: ASYMMETRY, COLLIDING BEAMS: ELECTRON POSITRON, ASYMMETRY: POLARIZATION, Salam-Weinberg model, QUANTUM CHROMODYNAMICS, EFFECT: SPIN, LONGITUDINAL: POLARIZATION, COLLIDING BEAMS [ELECTRON POSITRON], ANNIHILATION: ELECTRON POSITRON, ELECTRON POSITRON [COLLIDING BEAMS], EFFECT [SPIN], POSITRON: POLARIZED BEAM, ASYMMETRY [POLARIZATION], ELECTRON POSITRON: COLLIDING BEAMS, ELECTRON POSITRON [ANNIHILATION], SPIN: EFFECT, POLARIZED BEAM [POSITRON], ANNIHILATION [ELECTRON POSITRON], COUPLING CONSTANT, POLARIZATION [LONGITUDINAL], ELECTRON POSITRON: ANNIHILATION, POLARIZATION: LONGITUDINAL
Abstract

10 pp. (1980).

Published
1980
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33. ELECTROWEAK RADIATIVE CORRECTIONS IN THE $SU(2) \times U(1)$ STANDARD MODEL

Author

Hollik, Wolfgang

Subjects
SU(2) x U(1) [gauge field theory], angular distribution: asymmetry, radiative correction [electroweak interaction], electroweak interaction: radiative correction, ASYMMETRY: ANGULAR DISTRIBUTION, annihilation [electron positron], electron positron: annihilation, ANGULAR DISTRIBUTION [ASYMMETRY], renormalization, polarization: asymmetry, elastic scattering [neutrino electron], POLARIZATION [ASYMMETRY], pair production [muon], numerical calculations, ASYMMETRY: POLARIZATION, muon: leptonic decay, Weinberg angle, PAIR PRODUCTION: MUON, neutrino electron: elastic scattering, leptonic decay [muon], ((3, ASYMMETRY [POLARIZATION], muon: pair production, asymmetry [angular distribution], MUON [PAIR PRODUCTION], gauge field theory: SU(2) x U(1), talk
Abstract

19 pp. (1986).

Published
1986
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34. NEW GAUGE BOSONS AT COLLIDERS

Author

Ruckl, R.

Subjects
POSTULATED PARTICLE [GAUGE BOSON], GAUGE BOSON [MASS], GAUGE BOSON: HADROPRODUCTION, ASYMMETRY: ANGULAR DISTRIBUTION, HADROPRODUCTION [GAUGE BOSON], ANGULAR DISTRIBUTION: ASYMMETRY, SU(3) X SU(2) X U(1) X U(1) [GAUGE FIELD THEORY], MASS: GAUGE BOSON, TALK, ANGULAR DISTRIBUTION [ASYMMETRY], GAUGE BOSON: MIXING ANGLE, MASS [GAUGE BOSON], GAUGE BOSON: ELECTROPRODUCTION, NUMERICAL CALCULATIONS, ELECTROWEAK INTERACTION [WEINBERG ANGLE], HADROPRODUCTION: GAUGE BOSON, ASYMMETRY [ANGULAR DISTRIBUTION], GAUGE BOSON: WIDTH, POLARIZATION [ASYMMETRY], ELECTROWEAK INTERACTION: WEINBERG ANGLE, GAUGE BOSON: POSTULATED PARTICLE, POLARIZATION: ASYMMETRY, ASYMMETRY: POLARIZATION, GAUGE BOSON [ELECTROPRODUCTION], GAUGE BOSON: MASS, WEINBERG ANGLE [ELECTROWEAK INTERACTION], GAUGE BOSON [HADROPRODUCTION], MIXING ANGLE [GAUGE BOSON], ASYMMETRY [POLARIZATION], ELECTROPRODUCTION: GAUGE BOSON, ELECTROPRODUCTION [GAUGE BOSON], WEINBERG ANGLE: ELECTROWEAK INTERACTION, WIDTH [GAUGE BOSON], GAUGE FIELD THEORY: SU(3) X SU(2) X U(1) X U(1)
Abstract

22 pp. (1986).

Published
1986
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