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    Study of inclusive strange-baryon production and search for pentaquarks in two-photon collisions at LEP (English)

    In: The European Physical Journal C ; 49 , 2 ; 395-410 ; 2006
    • ISSN:
      1434-6044
    • Article (Journal)  /  Print

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    Abstract Measurements of inclusive production of the Λ, $ Ξ^{-} $ and $ Ξ^{*} $(1530) baryons in two-photon collisions with the L3 detector at LEP are presented. The inclusive differential cross sections for Λ and $ Ξ^{-} $ are measured as a function of the baryon transverse momentum, $ p_{t} $, and pseudo-rapidity, η. The mean number of Λ, $ Ξ^{-} $ and $ Ξ^{*} $(1530) baryons per hadronic two-photon event is determined in the kinematic range 0.4 GeV<$ p_{t} $<2.5 GeV, |η|<1.2. Overall agreement with the theoretical models and Monte Carlo predictions is observed. A search for inclusive production of the pentaquark $ θ^{+} $(1540) in two-photon collisions through the decay $ θ^{+} $→$ pK^{0} $S is also presented. No evidence for production of this state is found.

    Table of contents – Volume 49, Issue 2

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    393
    Editorial
    Bartels, J. et al. | 2007
    395
    Study of inclusive strange-baryon production and search for pentaquarks in two-photon collisions at LEP
    Achard, P. / Adriani, O. / Aguilar-Benitez, M. / Alcaraz, J. / Alemanni, G. / Allaby, J. / Aloisio, A. / Alviggi, M.G. / Anderhub, H. / Andreev, V.P. et al. | 2006
    411
    Fermion pair production in e+e- collisions at 189–209 GeV and constraints on physics beyond the standard model
    Schael, S. / Barate, R. / Brunelière, R. / De Bonis, I. / Decamp, D. / Goy, C. / Jézéquel, S. / Lees, J.-P. / Martin, F. / Merle, E. et al. | 2006
    439
    Search for Higgs bosons decaying to WW in e+e- collisions at LEP
    Schael, S. / Barate, R. / Brunelière, R. / De Bonis, I. / Decamp, D. / Goy, C. / Jézéquel, S. / Lees, J.-P. / Martin, F. / Merle, E. et al. | 2006
    457
    Search for invisibly decaying Higgs bosons with large decay width using the OPAL detector at LEP
    Abbiendi, G. / Ainsley, C. / Åkesson, P.F. / Alexander, G. / Anagnostou, G. / Anderson, K.J. / Asai, S. / Axen, D. / Bailey, I. / Barberio, E. et al. | 2006
    473
    Dalitz plot analysis of e(+) e(-) to pi(0) pi(0) gamma events at square root of s greater than or similar M(Phi) with the KLOE detector
    Ambrosino, F. / Antonelli, A. / Antonelli, M. / Bacci, C. / Beltrame, P. / Bencivenni, G. / Bertolucci, S. / Bini, C. / Bloise, C. / Bocchetta, S. et al. | 2007
    473
    Dalitz plot analysis of e+e-→π0π0γ events at Formula Not Shown with the KLOE detector
    Ambrosino, F. / Antonelli, A. / Antonelli, M. / Bacci, C. / Beltrame, P. / Bencivenni, G. / Bertolucci, S. / Bini, C. / Bloise, C. / Bocchetta, S. et al. | 2007
    473
    Dalitz plot analysis of e+e-→π0π0γ events at $\sqrt{s} \simeq{M}_{\phi}$ with the KLOE detector
    Ambrosino, F. / Antonelli, A. / Antonelli, M. / Bacci, C. / Beltrame, P. / Bencivenni, G. / Bertolucci, S. / Bini, C. / Bloise, C. / Bocchetta, S. et al. | 2006
    489
    Measurement of the top-Higgs Yukawa coupling at a linear e+e- collider
    Gay, A. et al. | 2006
    499
    Search for the exotic Θ+ resonance in the NOMAD experiment
    Samoylov, O. / Naumov, D. / Cavasinni, V. / Astier, P. / Autiero, D. / Baldisseri, A. / Baldo-Ceolin, M. / Banner, M. / Bassompierre, G. / Benslama, K. et al. | 2006
    499
    Search for the exotic Theta(+) resonance in the NOMAD experiment
    Samoylov, O. / Naumov, D. / Cavasinni, V. / Astier, P. / Autiero, D. / Baldisseri, A. / Baldo-Ceolin, M. / Banner, M. / Bassompierre, G. / Benslama, K. et al. | 2007
    511
    Measurement of prompt photons with associated jets in photoproduction at HERA
    Chekanov, S. / Derrick, M. / Magill, S. / Miglioranzi, S. / Musgrave, B. / Nicholass, D. / Repond, J. / Yoshida, R. / Mattingly, M.C.K. / Pavel, N. et al. | 2006
    523
    Measurement of neutral current cross sections at high Bjorken-x with the ZEUS detector at HERA
    Chekanov, S. / Derrick, M. / Magill, S. / Miglioranzi, S. / Musgrave, B. / Nicholass, D. / Repond, J. / Yoshida, R. / Mattingly, M.C.K. / Pavel, N. et al. | 2006
    545
    A measurement of the psi' to J/psi production ratio in 920 GeV proton-nucleus interactions
    Abt, I. / Adams, M. / Agari, M. / Albrecht, H. / Aleksandrov, A. / Amaral, V. / Amorim, A. / Aplin, S.J. / Aushev, V. / Bagaturia, Y. et al. | 2007
    545
    A Measurement of the ψ′ to J/ψ production ratio in 920 GeV proton-nucleus interactions
    Abt, I. / Adams, M. / Agari, M. / Albrecht, H. / Aleksandrov, A. / Amaral, V. / Amorim, A. / Aplin, S.J. / Aushev, V. / Bagaturia, Y. et al. | 2006
    559
    ψ′ production in Pb–Pb collisions at 158 GeV/nucleon
    Alessandro, B. / Alexa, C. / Arnaldi, R. / Atayan, M. / Beolè, S. / Boldea, V. / Bordalo, P. / Borges, G. / Castor, J. / Chaurand, B. et al. | 2006
    559
    Psi' production in Pb-Pb collisions at 158 GeV/nucleon
    Alessandro, B. / Alexa, C. / Arnaldi, R. / Atayan, M. / Beole, S. / oldea, V. / Bordalo, P. / Borges, G. / Castor, J. / Chaurand, B. et al. | 2007
    569
    UCLA space-time area law model: A persuasive foundation for hadronization
    Abachi, S. / Buchanan, C. / Chien, A. / Chun, S. / Hartfiel, B. et al. | 2007
    581
    How can the odderon be detected at RHIC and LHC?
    Avila, R.F. / Gauron, P. / Nicolescu, B. et al. | 2006
    593
    The correction of the littlest Higgs model to the Higgs production process e+e-→e+e-H at the ILC
    Wang, Xuelei / Liu, Yaobei / Chen, Jihong / Yang, Hua et al. | 2006
    599
    PDF and scale uncertainties of various DY distributions in ADD and RS models at hadron colliders
    Kumar, M.C. / Mathews, Prakash / Ravindran, V. et al. | 2006
    613
    Prospects to search for E6 isosinglet quarks in ATLAS
    Mehdiyev, R. / Sultansoy, S. / Unel, G. / Yilmaz, M. et al. | 2006
    623
    Discovery potential of R-hadrons with the ATLAS detector
    Kraan, A.C. / Hansen, J.B. / Nevski, P. et al. | 2006
    641
    Investigation of gf0ργ and ga0ργ coupling constants in light cone sum rules
    Aydın, C. / Bayar, M. / Yılmaz, A.H. et al. | 2006

    How to get this title?

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    Electronic version available

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