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Your search keyword '"semileptonic decay [tau]"' showing total 11 results
Start Over Descriptor "semileptonic decay [tau]" Topic colliding beams [electron positron]
11 results on '"semileptonic decay [tau]"'

1. Search for lepton-number- and baryon-number-violating tau decays at Belle

Author

Sahoo, D., Mohanty, G. B., Aziz, T., Kroeger, R., Krokovny, P., Kuhr, T., Kumar, M., Kumar, R., Kumara, K., Kuzmin, A., Kwon, Y.-J., Lalwani, K., Lee, I. S., Babu, Varghese, Lee, S. C., Li, C. H., Li, J., Li, L. K., Li, Y. B., Libby, J., Lieret, K., Liventsev, D., Luo, T., MacNaughton, J., Bahinipati, S., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Metzner, F., Miyabayashi, K., Mizuk, R., Mohanty, S., Moon, T. J., Mussa, R., Behera, P., Nakano, E., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, S., Bennett, J., Ono, H., Onuki, Y., Oskin, P., Pakhlov, P., Pakhlova, G., Pang, T., Pardi, S., Park, C. W., Park, H., Patra, S., Bessner, M., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Ritter, M., Roehrken, Markus, Bhardwaj, V., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sakai, Y., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Bilka, T., Schueler, J., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Sharma, C., Shen, C. P., Shiu, J.-G., Biswal, J., Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Strube, J. F., Sumiyoshi, T., Takizawa, M., Bonvicini, G., Tamponi, U., Tanida, K., Tenchini, Francesco, Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Trabelsi, K., Bozek, A., Vahsen, S. E., Van Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Waheed, E., Wang, C. H., Wang, E., Wang, M.-Z., Wang, P., Bračko, M., Watanabe, M., Watanuki, S., Wehle, S., Won, E., Xu, X., Yabsley, B. D., Yan, W., Yang, S. B., Ye, H., Yelton, J., Browder, T. E., Yin, J. H., Yusa, Y., Zhilich, V., Zhukova, V., Zhulanov, V., Belle Collaboration, Campajola, M., Cao, L., Červenkov, D., Chang, M.-C., Chang, P., Chekelian, V., Chen, A., Adachi, I., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, S.-K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Das, S., Adamczyk, K., Dash, N., De Nardo, G., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Dubey, S., Eidelman, S., Epifanov, D., Ferber, T., Aihara, H., Ferlewicz, D., Frey, A., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Guan, Y., Al Said, S., Gudkova, K., Hadjivasiliou, C., Halder, S., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., Hernandez Villanueva, M., Hou, W.-S., Asner, D. M., Hsu, C.-L., Huang, K., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Aushev, T., Jeon, H. B., Jia, S., Jin, Y., Joo, C. W., Joo, K. K., Kaliyar, A. B., Kang, K. H., Karyan, G., Kawasaki, T., Kichimi, H., Ayad, R., Kiesling, C., Kim, D. Y., Kim, S. H., Kim, Y.-K., Kinoshita, K., Kodyš, P., Konno, T., Korpar, S., Kotchetkov, D., Križan, P., Université Paris-Sud - Paris 11 (UP11), Belle, Belle, Collaboration, Campajola, M., De Nardo, G., Di Capua, F., Merola, M., Pardi, S., Russo, G., and Et, Al.

Subjects
+anti-p+electron+muon%2B%22">tau- --> anti-p electron muon+, +p+2electron%22">tau- --> p 2electron, tau: rare decay, annihilation [electron positron], 01 natural sciences, High Energy Physics - Experiment, electron: pair production, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics, rare decay [tau], tau: pair production, tau: branching ratio: upper limit, semileptonic decay [tau], electron positron: colliding beams, 3. Good health, +anti-p+positron+muon%22">tau- --> anti-p positron muon, muon: pair production, High Energy Physics - Phenomenology, pair production [tau], colliding beams [electron positron], Particle physics, FOS: Physical sciences, BELLE, electron positron: annihilation, KEKB, KEK-B, violation [baryon number], 0103 physical sciences, ddc:530, violation [lepton number], pair production [electron], pair production [muon], 010306 general physics, baryon number: violation, lepton number: violation, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Lepton number, +anti-p+electron+positron%22">tau- --> anti-p electron positron, +p+2muon%22">tau- --> p 2muon, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, Baryon number, +anti-p+muon%2B+muon%22">tau- --> anti-p muon+ muon, branching ratio: upper limit [tau], experimental results, tau: semileptonic decay
Abstract

We search for lepton-number- and baryon-number-violating decays $\tau^{-}\to\overline{p}e^{+}e^{-}$, $pe^{-}e^{-}$, $\overline{p}e^{+}\mu^{-}$, $\overline{p}e^{-}\mu^{+}$, $\overline{p}\mu^{+}\mu^{-}$, and $p\mu^{-}\mu^{-}$ using 921 fb$^{-1}$ of data, equivalent to $(841\pm12)\times 10^6$ $\tau^{+}\tau^{-}$ events, recorded with the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. In the absence of a signal, $90\%$ confidence-level upper limits are set on the branching fractions of these decays in the range $(1.8$-$4.0)\times 10^{-8}$. We set the world's first limits on the first four channels and improve the existing limits by an order of magnitude for the last two channels., Comment: 8 pages, 5 figures, 1 table

Published
2020
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2. Observation of $τ^ − → π^ − ν_ τ e^ + e^ −$ and search for $τ ^− → π^ − ν_ τ μ ^+ μ^ −$

Author

Jin, Yifan, Aihara, H., Badhrees, I., Liptak, Z., Liventsev, D., Lu, P.-C., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Bahinipati, S., Miyata, H., Mizuk, R., Mori, T., Mussa, R., Nakano, E., Nakao, M., Nath, K. J., Natkaniec, Z., Nayak, M., Niiyama, M., Bansal, V., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Park, H., Behera, P., Park, S.-H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Purohit, M. V., Rostomyan, A., Berger, M., Russo, G., Sahoo, D., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Bhardwaj, V., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Seon, O., Sevior, M. E., Shebalin, V., Shen, C. P., Shiu, J.-G., Shwartz, B., Bilka, T., Simon, F., Singh, J. B., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Strube, J. F., Sumiyoshi, T., Takizawa, M., Biswal, J., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Bobrov, A., Van Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Vossen, A., Wang, B., Wang, C. H., Wang, M.-Z., Wang, P., Watanuki, S., Bonvicini, G., Won, E., Yang, S. B., Ye, H., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., Belle Collaboration, Epifanov, D., Bozek, A., Bračko, M., Campajola, M., Cao, L., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Adachi, I., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Di Carlo, S., Doležal, Z., Dong, T. V., Dossett, D., Eidelman, S., Al Said, S., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Asner, D. M., Greenwald, D., Grzymkowska, O., Haba, J., Hayasaka, K., Hayashii, H., Hedges, M. T., Hou, W.-S., Huang, K., Iijima, T., Inami, K., Aulchenko, V., Inguglia, G., Ishikawa, A., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jeon, H. B., Jia, S., Joffe, D., Joo, K. K., Kahn, J., Aushev, T., Kaliyar, A. B., Karyan, G., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, D. Y., Kim, H. J., Kim, K. T., Kim, S. H., Kinoshita, K., Ayad, R., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kulasiri, R., Kumar, R., Kuzmin, A., Kwon, Y.-J., Babu, V., Lalwani, K., Lange, J. S., Lee, J. Y., Lee, S. C., Li, C. H., Li, L. K., Li, Y. B., Li Gioi, L., Libby, J., and Lieret, K.

Subjects
rare decay [tau], branching ratio: measured [tau], (pi electron positron) [mass spectrum], BELLE, +pi-+neutrino%2Ftau+electron+positron%22">tau- --> pi- neutrino/tau electron positron, annihilation [electron positron], semileptonic decay [tau], +pi-+neutrino%2Ftau+muon%2B+muon%22">tau- --> pi- neutrino/tau muon+ muon, phase space, KEK-B, axial-vector [current], efficiency, colliding beams [electron positron], ddc:530, mediation, pair production [electron], pair production [muon], branching ratio: upper limit [tau], statistical, experimental results
Abstract

We present the first measurements of branching fractions of rare tau-lepton decays, τ-→π-ντℓ+ℓ- (ℓ=e or μ), using a data sample corresponding to 562 fb-1 collected at a center-of-mass energy of 10.58 GeV with the Belle detector at the KEKB asymmetric-energy e+e- collider. The τ-→π-ντe+e- decay is observed for the first time with 7.0σ significance. The partial branching fraction determined by the structure-dependent mechanisms mediated by either a vector or an axial-vector current for the mass region Mπee>1.05 GeV/c2 is measured to be B(τ-→π-ντe+e-)[Mπ-e+e->1.05 GeV/c2]=(5.90±0.53±0.85±0.11)×10-6, where the first uncertainty is statistical, the second is systematic, and the third is due to model dependence. In the full phase space, due to the different detection efficiencies for the structure-dependent mechanisms mediated by axial-vector and vector currents, the branching fraction varies from BA(τ-→π-ντe+e-)=(1.46±0.13±0.21)×10-5 to BV(τ-→π-ντe+e-)=(3.01±0.27±0.43)×10-5, respectively. An upper limit is set on the branching fraction of the τ-→π-ντμ+μ- decay, B(τ-→π-ντμ+μ-)

Published
2019
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3. Impact of hadronic backgrounds on selected Higgs physics analyses at a linear collider

Author

Desch, K., Imhof, A., Meyer, Niels T., and Raspereza, A.

Subjects
pair production [neutrino/e], 1000 GeV-cms [500], +2beauty%22">Higgs particle --> 2beauty, +Higgs+particle+Z0%22">electron positron --> Higgs particle Z0, beam: radiation, photoproduction [hadron], +rho%28770%29+neutrino%2Ftau%22">tau --> rho(770) neutrino/tau, Higgs particle: search for, W W: fusion, mass [rho(770)], hadronic [background], 500: 1000 GeV-cms, associated production [Z0], Z0: hadronic decay, +%28n%29hadron%22">photon photon --> (n)hadron, hadronic decay [Z0], semileptonic decay [tau], Monte Carlo [numerical calculations], electron positron: colliding beams, radiation [beam], hadron: photoproduction, background: hadronic, Higgs particle: mass, +Higgs+particle+neutrino%2Fe+antineutrino%2Fe%22">electron positron --> Higgs particle neutrino/e antineutrino/e, colliding beams [electron positron], Higgs particle: electroproduction, +tau%2B+tau%22">Higgs particle --> tau+ tau, numerical calculations: Monte Carlo, (4jet) [final state], interaction [photon photon], photon photon: interaction, fusion [W W], Higgs particle: leptonic decay, rho(770): mass, search for [Higgs particle], neutrino/e: pair production, leptonic decay [Higgs particle], mass [Higgs particle], final state: (4jet), Z0: associated production, electroproduction [Higgs particle], hadronic decay [Higgs particle], Higgs particle: hadronic decay, tau: semileptonic decay
Abstract

20 pp. (2004).

Published
2004
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4. A Measurement of the tau lepton lifetime at ARGUS

Author

Saull, Patrick Richard Behrendt

Subjects
approx. 10.5 GeV-cms, Thesis, ARGUS, DESY DORIS Stor, lifetime [tau], bibliography, annihilation [electron positron], semileptonic decay [tau], (3charged particle) [final state], vertex [track data analysis], pair production [tau], colliding beams [electron positron], impact parameter [track data analysis], experimental results
Published
1997
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5. A measurement of the Michel parameters and $\nu_{\tau}$ helicity in $\tau$ lepton decays with the L3 detector at LEP

Author

Kapinos, Pavel Anatolevich

Subjects
electron positron [annihilation], electroproduction [Z0], Z0 [electroproduction], model [weak interaction], tau [pair production], thesis, Michel parameter, bibliography, CERN LEP Stor, annihilation [electron positron], leptonic decay [tau], semileptonic decay [tau], helicity [neutrino/tau], (muon electron) [universality], pair production [tau], L3, tau [semileptonic decay], colliding beams [electron positron], weak interaction [model], electron positron [colliding beams], 88.5-93.7 GeV-cms, Detectors and Experimental Techniques, tau [leptonic decay], experimental results
Published
1996

6. Upper limits for the decay of $\tau$-leptons into $\eta$-mesons

Author

Albrecht, H., Böckmann, P., Schulz, H. D., Sefkow, F., Spengler, J., Wurth, R., Yagil, A., Appuhn, R. D., Drescher, A., Hast, C., Kamp, D., Kolanoski, H., Gläser, R., Lindner, A., Mankel, R., Matthiesen, U., Scheck, H., Schweda, G., Spaan, B., Walther, A., Wegener, D., Funk, W., Gabriel, J. C., Harder, G., Stiewe, J., Werner, S., Edwards, K. W., Frisken, W. R., Kapitza, H., Kutschke, R., MacFarlane, D. B., McLean, K. W., Nilsson, A. W., Orr, R. S., Krüger, A., Parsons, J. A., Patel, P. M., Prentice, J. D., Seidel, S. C., Swain, J. D., Tsipolitis, G., Yoon, T. -S., Ammar, R., Ball, S., Coppage, D., Nippe, A., Davis, R., Kanekal, S., Kwak, N., Ruf, T., Schael, S., Schubert, K. R., Strahl, K., Waldi, R., Boštjančič, B., Kernel, G., Reidenbach, M., Križan, P., Križnič, E., Pleško, M., Cronström, H. I., Jönsson, L., Babaev, A., Danilov, M., Fominykh, B., Golutvin, A., Gorelov, I., Schäfer, M., Lubimov, V., Rostovtsev, A., Semenov, A., Semenov, S., Shevchenko, V., Soloshenko, V., Tchistilin, V., Tichomirov, I., Zaitsev, Yu., Childers, R., Schmidt-Parzefall, W., Darden, C. W., Fernholz, R. C., ARGUS Collaboration, and Schröder, H.

Subjects
+2ETA+PI-+PI0+NEUTRINO%2FTAU%22">TAU- --> 2ETA PI- PI0 NEUTRINO/TAU, ARGUS, TAU [ELECTROPRODUCTION], UPPER LIMIT, MASS SPECTRUM [(PI+ PI-)], (ETA) [FINAL STATE], +2ETA+PI-+NEUTRINO%2FTAU%22">TAU- --> 2ETA PI- NEUTRINO/TAU, +ETA+PI-+NEUTRINO%2FTAU%22">TAU- --> ETA PI- NEUTRINO/TAU, 9.4-10.6 GEV-CMS, (PI+ PI-): MASS SPECTRUM, TAU: BRANCHING RATIO, DESY DORIS II STOR, SEMILEPTONIC DECAY: TAU, S035.71, COLLIDING BEAMS [ELECTRON POSITRON], ANNIHILATION: ELECTRON POSITRON, S035.295, ELECTRON POSITRON: COLLIDING BEAMS, ELECTRON POSITRON [ANNIHILATION], TAU: SEMILEPTONIC DECAY, (ETA): FINAL STATE, ANNIHILATION [ELECTRON POSITRON], S035.339, BRANCHING RATIO [TAU], (PI+ PI-) [MASS SPECTRUM], +ETA+PI-+%28N%29PI0+NEUTRINO%2FTAU%22">TAU- --> ETA PI- (N)PI0 NEUTRINO/TAU, TAU: ELECTROPRODUCTION, FINAL STATE: (ETA), S035.69, S035.68, TAU [SEMILEPTONIC DECAY], MASS SPECTRUM: (PI+ PI-), S035.70, ddc:530, ELECTROPRODUCTION: TAU, FINAL STATE [(ETA)], ELECTROPRODUCTION [TAU], COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, SEMILEPTONIC DECAY [TAU], S035.113, ELECTRON POSITRON [COLLIDING BEAMS], S035.14, S035.58, ELECTRON POSITRON: ANNIHILATION
Abstract

15 pp. (1988)., The production of η-mesons in τ-decays has been studied with the ARGUS detector at the DORIS II storage ring. τ+τ− events were selected by their characteristic 1-versus-3 charged particle topology. The π+π− invariant mass distribution was used to search for evidence of η production in τ-decays. No signal was observed, leading to upper limits at 95% CL of Br(τ−→ηπ−π0vτ)

Published
1988
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7. RECENT RESULTS FROM ARGUS ON PRODUCTION AND DECAY OF HEAVY PARTICLES

Author

MacFarlane, David B., Schroder, Henning, and ARGUS Collaboration

Subjects
NONLEPTONIC DECAY [UPSILON(9460)], ELECTROPRODUCTION: LAMBDA, ELECTROPRODUCTION: OMEGA, ARGUS, ELECTROPRODUCTION: XI, TALK, B [DECAY MODES], +OMEGA%28783%29+PI+NEUTRINO%22">TAU --> OMEGA(783) PI NEUTRINO, OMEGA-: ELECTROPRODUCTION, ELECTROPRODUCTION [HYPERON], UPSILON MESONS, OMEGA, HYPERON [ELECTROPRODUCTION], SIGMA(1385): ELECTROPRODUCTION, ELECTROPRODUCTION [LAMBDA], ELECTROPRODUCTION: HYPERON, DESY DORIS II STOR, UPSILON(9460) [NONLEPTONIC DECAY], HYPERON: ELECTROPRODUCTION, ELECTROPRODUCTION [SIGMA(1385)], SEMILEPTONIC DECAY: TAU, +PHI%281020%29+ANTI-K0%22">D0 --> PHI(1020) ANTI-K0, COLLIDING BEAMS [ELECTRON POSITRON], ELECTROPRODUCTION: SIGMA(1385), ELECTROPRODUCTION [XI-], ANNIHILATION: ELECTRON POSITRON, SIGMA0 [ELECTROPRODUCTION], DECAY MODES: B, ELECTRON POSITRON: COLLIDING BEAMS, LAMBDA, ELECTRON POSITRON [ANNIHILATION], TAU: SEMILEPTONIC DECAY, ANNIHILATION [ELECTRON POSITRON], XI-: ELECTROPRODUCTION, APPROX. 10 GEV-CMS, ELECTROPRODUCTION [XI(1530)], XI(1530) [ELECTROPRODUCTION], XI- [ELECTROPRODUCTION], OMEGA- [ELECTROPRODUCTION], SIGMA0, TAU [SEMILEPTONIC DECAY], LAMBDA [ELECTROPRODUCTION], XI, XI(1530), DECAY MODES [B], SIGMA(1385), COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, ELECTROPRODUCTION: XI(1530), D0: NONLEPTONIC DECAY, ELECTROPRODUCTION: SIGMA0, NONLEPTONIC DECAY: D0, SEMILEPTONIC DECAY [TAU], B: DECAY MODES, XI(1530): ELECTROPRODUCTION, NONLEPTONIC DECAY: UPSILON(9460), SIGMA0: ELECTROPRODUCTION, ELECTRON POSITRON [COLLIDING BEAMS], SIGMA(1385) [ELECTROPRODUCTION], UPSILON(9460): NONLEPTONIC DECAY, NONLEPTONIC DECAY [D0], LAMBDA: ELECTROPRODUCTION, ELECTROPRODUCTION [OMEGA-], D0 [NONLEPTONIC DECAY], ELECTRON POSITRON: ANNIHILATION, ELECTROPRODUCTION [SIGMA0]
Abstract

26 pp. (1986).

Published
1986
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8. ELECTROWEAK INTERFERENCE EFFECTS IN $e^+ e^-$ INTERACTIONS AND SELECTED RESULTS ON TAU DECAYS

Author

Naroska, Beate

Subjects
PAIR PRODUCTION [MUON], MUON [ELECTROPRODUCTION], AXIAL-VECTOR: COUPLING CONSTANT, ASYMMETRY: ANGULAR DISTRIBUTION, TAU [ELECTROPRODUCTION], EXPERIMENTAL RESULTS [REVIEW], ENERGY DEPENDENCE, ANGULAR DISTRIBUTION: ASYMMETRY, BIBLIOGRAPHY, DESY PETRA STOR, UPPER LIMIT, HADRON: ELECTROPRODUCTION, COUPLING CONSTANT: VECTOR, MULTIPLE PRODUCTION: HADRON, ANGULAR DISTRIBUTION [ASYMMETRY], ELECTROPRODUCTION [HADRON], ASYMMETRY [ANGULAR DISTRIBUTION], ELECTROWEAK INTERACTION: INTERFERENCE, COUPLING CONSTANT [AXIAL-VECTOR], MUON: ELECTROPRODUCTION, TAU: PAIR PRODUCTION, ELECTROPRODUCTION: HADRON, TAU: BRANCHING RATIO, TAU [LEPTONIC DECAY], TAU: MASS, Z0: MASS, LEPTONIC DECAY: TAU, SEMILEPTONIC DECAY: TAU, HADRON [ELECTROPRODUCTION], VECTOR [COUPLING CONSTANT], QUARK: FRACTIONALLY CHARGED, PAIR PRODUCTION: TAU, COLLIDING BEAMS [ELECTRON POSITRON], HADRON [MULTIPLE PRODUCTION], UNIVERSALITY: (TAU MUON), ANNIHILATION: ELECTRON POSITRON, PAIR PRODUCTION [TAU], ELECTRON POSITRON: COLLIDING BEAMS, REVIEW: EXPERIMENTAL RESULTS, TAU: SEMILEPTONIC DECAY, ELECTRON POSITRON [ANNIHILATION], INTERFERENCE: ELECTROWEAK INTERACTION, ANNIHILATION [ELECTRON POSITRON], (TAU MUON) [UNIVERSALITY], LEPTONIC DECAY [TAU], BRANCHING RATIO [TAU], CROSS SECTION: HADRONIC, MULTIPLE PRODUCTION [HADRON], AXIAL-VECTOR [COUPLING CONSTANT], BOTTOM, ELECTROPRODUCTION: MUON, TAU: ELECTROPRODUCTION, COUPLING CONSTANT: WEAK INTERACTION, INTERFERENCE [ELECTROWEAK INTERACTION], VECTOR: COUPLING CONSTANT, HADRONIC [CROSS SECTION], top, MUON: PAIR PRODUCTION, SLAC PEP STOR, TAU [SEMILEPTONIC DECAY], TAU [PAIR PRODUCTION], MASS [TAU], WEAK INTERACTION: COUPLING CONSTANT, MASS: Z0, ELECTROWEAK INTERACTION [INTERFERENCE], ELECTROPRODUCTION [MUON], ELECTROPRODUCTION: TAU, COLLIDING BEAMS: ELECTRON POSITRON, ELECTROPRODUCTION [TAU], MASS [Z0], SEMILEPTONIC DECAY [TAU], Z0 [MASS], PAIR PRODUCTION: MUON, HADRON: MULTIPLE PRODUCTION, TAU [MASS], COUPLING CONSTANT: AXIAL-VECTOR, TAU: LEPTONIC DECAY, ELECTRON POSITRON [COLLIDING BEAMS], COUPLING CONSTANT [WEAK INTERACTION], COUPLING CONSTANT [VECTOR], MUON [PAIR PRODUCTION], MASS: TAU, 29.0-43.3 GEV-CMS, WEAK INTERACTION [COUPLING CONSTANT], FRACTIONALLY CHARGED [QUARK], ELECTRON POSITRON: ANNIHILATION
Abstract

20 pp. (1985).

Published
1985
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9. HEAVY FLAVORS IN $e^+ e^-$ INTERACTIONS

Author

Eisenberg, Yehuda

Subjects
electroproduction: charmed meson, annihilation: electron positron, electroproduction: psi mesons, D: nonleptonic decay, B: semileptonic decay, B: nonleptonic decay, lifetime [tau], annihilation [electron positron], semileptonic decay: D, W: exchange, semileptonic decay: B, nonleptonic decay [B], electroproduction [charmed meson], electron positron [colliding beams], electroproduction [upsilon mesons], psi mesons: electroproduction, quark: fragmentation function, Iizuka-Okubo-Zweig rule, electroproduction: bottom meson, B0 anti-B0: mixing, charmed meson [electroproduction], electroproduction: upsilon mesons, semileptonic decay [tau], electron positron: colliding beams, B [semileptonic decay], electroproduction [bottom meson], interpretation of experiments, D [nonleptonic decay], colliding beams [electron positron], flavor changing [neutral current], bottom meson [electroproduction], semileptonic decay [D], electroproduction [psi mesons], bottom meson: electroproduction, review, top, electron positron: annihilation, tau: lifetime, quark: lifetime, fragmentation function [quark], D: semileptonic decay, bottom, nonleptonic decay [D], tau [semileptonic decay], lifetime [quark], psi mesons [electroproduction], exchange: W, electron positron [annihilation], D [semileptonic decay], upsilon mesons: electroproduction, semileptonic decay: tau, CKM matrix matrix, neutral current: flavor changing, upsilon mesons [electroproduction], bibliography, W [exchange], nonleptonic decay: D, nonleptonic decay: B, colliding beams: electron positron, semileptonic decay [B], B [nonleptonic decay], branching ratio [top], mixing [B0 anti-B0], top: branching ratio, charmed meson: electroproduction, exchange [W], tau: semileptonic decay
Abstract

52 pp. (1985).

Published
1985
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10. Recent results from the PLUTO and DASP detectors at DORIS

Author

U. Timm

Subjects
QUARK: SUM RULE, +F%281260%29+PHOTON%22">J/PSI(3100) --> F(1260) PHOTON, PSI(4100) STRUCTURE: WIDTH, WIDTH [PSI(4100) STRUCTURE], (RHO(765) PI) [PARTIAL WAVE], FINAL STATE [PHOTON], LEPTONIC DECAY [PSI(4100) STRUCTURE], (3PI) [MASS SPECTRUM], F(1260): PRODUCTION, PSI(4100) STRUCTURE: LEPTONIC DECAY, BOUNDARY CONDITION [LIFETIME], PRODUCTION [F(1260)], PSI(4400): WIDTH, ANNIHILATION: ELECTRON POSITRON, DALITZ PLOT [MULTIDIMENSIONAL ANALYSIS], TAU: SEMILEPTONIC DECAY, ELECTRON POSITRON [ANNIHILATION], ELECTROPRODUCTION [PSI(3700)], +RHO%28765%29+PI+NEUTRINO%22">TAU --> RHO(765) PI NEUTRINO, ANNIHILATION [ELECTRON POSITRON], GLUON [EXCHANGE], LEPTONIC DECAY: PSI(4100) STRUCTURE, Quark, PHOTON [FINAL STATE], TAU: ELECTROPRODUCTION, Nuclear physics, TAU: LIFETIME, PSI(4100) STRUCTURE [WIDTH], MASS SPECTRUM: (PI+ PI-), PHOTON: FINAL STATE, F(1260) [PRODUCTION], COLLIDING BEAMS: ELECTRON POSITRON, ELECTROPRODUCTION [TAU], EXPERIMENTAL RESULTS, Pseudovector, PSI(4400) [LEPTONIC DECAY], PSI(4400) [WIDTH], FINAL STATE: PHOTON, Branching fraction, NEUTRINO: FINAL STATE, PSI(4400): LEPTONIC DECAY, ELECTRON POSITRON [COLLIDING BEAMS], PI: FINAL STATE, +2TAU%22">ELECTRON POSITRON --> 2TAU, MOMENTUM SPECTRUM [ELECTRON], PSI(3700) [ELECTROPRODUCTION], MAGNETIC DETECTOR: DASP, ENERGY DEPENDENCE [CHANNEL CROSS SECTION], ELECTRON POSITRON: ANNIHILATION, TAU [ELECTROPRODUCTION], Hadron, 3.5-5.2 GEV-CM, PARTIAL WAVE: (RHO(765) PI), J/PSI(3100): BRANCHING RATIO, PLUTO, MASS SPECTRUM: (3PI), TAU: BRANCHING RATIO, GLUON: EXCHANGE, EXCHANGE: GLUON, BRANCHING RATIO [J/PSI(3100)], Physics, Quantum chromodynamics, WIDTH [PSI(4400)], COLLIDING BEAMS [ELECTRON POSITRON], RADIATIVE DECAY [J/PSI(3100)], ELECTRON POSITRON: COLLIDING BEAMS, FINAL STATE [NEUTRINO], SUM RULE [QUARK], LEPTONIC DECAY: PSI(4400), NEUTRINO [FINAL STATE], MULTIDIMENSIONAL ANALYSIS: DALITZ PLOT, Sum rule in quantum mechanics, EXCHANGE [GLUON], WIDTH: PSI(4400), BRANCHING RATIO [TAU], J/PSI(3100): RADIATIVE DECAY, ELECTRON: MOMENTUM SPECTRUM, Particle physics, (PI+ PI-) [MASS SPECTRUM], PI [FINAL STATE], PSI(3700): ELECTROPRODUCTION, LIFETIME: BOUNDARY CONDITION, LIFETIME [TAU], CHANNEL CROSS SECTION: ENERGY DEPENDENCE, PRODUCTION: F(1260), FINAL STATE: PI, DASP [MAGNETIC DETECTOR], ELECTROPRODUCTION: TAU, PSI(4100) STRUCTURE [LEPTONIC DECAY], ANGULAR DISTRIBUTION: (F(1260) PHOTON), DESY DORIS STOR, ELECTROPRODUCTION: PSI(3700), SEMILEPTONIC DECAY [TAU], High Energy Physics::Phenomenology, LEPTONIC DECAY [PSI(4400)], Gluon, FINAL STATE: NEUTRINO, (F(1260) PHOTON) [ANGULAR DISTRIBUTION], FINAL STATE [PI], WIDTH: PSI(4100) STRUCTURE, High Energy Physics::Experiment, Lepton
Abstract

21 pp. (1978)., Decays of the heavy lepton τ have now been observed in e+e− ‐ collisions at the energy of the ψ′‐resonace, which results in an improved mass determination Mτ=1.807±0.020 GeV. For the τ‐life‐time a new upper limit of ττ?3.5⋅10−12 sec. is given. The evidence for the decay τ→νπρ has been strengthened, and the πρ‐system is found to be in an S‐wave state with JP=1+, proving the axial vector component in the leptonic coupling of the τ to hadrons. The branching ratio is given with BR(τ−→νπ−ρ0) =0.050±0.015. The total hadronic cross section agrees within errors with the quarksum rule including QCD‐corrections. The production and decay distributions of the decay J/ψ→f0γ have been measured and found to agree well with a QCD calculation based on the exchange of two gluons.

Published
1978
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11. WEAK INTERACTIONS: PETRA RESULTS

Author

Hans-Ulrich Martyn

Subjects
NEUTRAL CURRENT: COUPLING, MUON [ELECTROPRODUCTION], ASYMMETRY: ANGULAR DISTRIBUTION, TAU [ELECTROPRODUCTION], PAIR PRODUCTION [LEPTON], ANGULAR DISTRIBUTION: ASYMMETRY, DESY PETRA STOR, CHARGED CURRENT, ANGULAR DISTRIBUTION [ASYMMETRY], ASYMMETRY [ANGULAR DISTRIBUTION], ELECTROWEAK INTERACTION: INTERFERENCE, LEPTON [DIRECT PRODUCTION], MUON: ELECTROPRODUCTION, TAU: BRANCHING RATIO, Charged current, Quantum chromodynamics, Physics, SEMILEPTONIC DECAY: TAU, QUARK [SEMILEPTONIC DECAY], DECAY [D*(2010)], COLLIDING BEAMS [ELECTRON POSITRON], Weinberg angle, ANNIHILATION: ELECTRON POSITRON, ELECTRON POSITRON: COLLIDING BEAMS, ELECTRON POSITRON [ELASTIC SCATTERING], DIRECT PRODUCTION [LEPTON], TAU: SEMILEPTONIC DECAY, ELECTRON POSITRON [ANNIHILATION], NEUTRAL CURRENT [COUPLING], INTERFERENCE: ELECTROWEAK INTERACTION, COUPLING [NEUTRAL CURRENT], ELASTIC SCATTERING: ELECTRON POSITRON, ELASTIC SCATTERING [ELECTRON POSITRON], ANNIHILATION [ELECTRON POSITRON], QUARK [PAIR PRODUCTION], 34.5: 42.3 GEV-CMS, DIRECT PRODUCTION: LEPTON, QUARK: PAIR PRODUCTION, BRANCHING RATIO [TAU], Quark, Semileptonic decay, Particle physics, RADIATIVE CORRECTION, PAIR PRODUCTION [QUARK], ELECTROPRODUCTION: MUON, QUARK: SEMILEPTONIC DECAY, TAU: ELECTROPRODUCTION, DECAY: D*(2010), review, INTERFERENCE [ELECTROWEAK INTERACTION], LIFETIME [TAU], ELECTRON POSITRON: ELASTIC SCATTERING, Nuclear physics, bottom, TAU [SEMILEPTONIC DECAY], TAU: LIFETIME, SEMILEPTONIC DECAY: QUARK, ELECTROWEAK INTERACTION [INTERFERENCE], ELECTROPRODUCTION [MUON], ELECTROPRODUCTION: TAU, COLLIDING BEAMS: ELECTRON POSITRON, ELECTROPRODUCTION [TAU], D*(2010): DECAY, PAIR PRODUCTION: LEPTON, Muon, Branching fraction, D*(2010) [DECAY], LEPTON: PAIR PRODUCTION, High Energy Physics::Phenomenology, LEPTON [PAIR PRODUCTION], SEMILEPTONIC DECAY [TAU], PAIR PRODUCTION: QUARK, ELECTRON POSITRON [COLLIDING BEAMS], SEMILEPTONIC DECAY [QUARK], 42.3 GEV-CMS [34.5], LEPTON: DIRECT PRODUCTION, Pair production, COUPLING: NEUTRAL CURRENT, High Energy Physics::Experiment, charm, ELECTRON POSITRON: ANNIHILATION, Lepton
Abstract

Bottom quarks 18 pp. (1984)., Recent results on weak interactions from experiments at the PETRA e+e− storage ring are presented. They include the determination of the weak neutral couplings in the purely leptonic reactions e+e−→e+e−, e+e−→μ+μ− and e+e− →τ+τ− and in the production of heavy charm and bottom quarks e+e−→cc̄ and e+e−→bb̄. The weak charged current is tested in τ decays, where new data on semihadronic branching ratis and a new lifetime measurement is reported, and in semileptonic decays of charm and bottom quarks.

Published
1984
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