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Measurement of the D-s(+/-) lifetime

Author:
Iori, M  Alkhazov, G  Atamantchouk, AG  Balatz, MY  Bondar, NF  Cooper, PS  Dauwe, LJ  Davidenko, GV  Dersch, U  Dolgolenko, AG  Dzyubenko, GB  Edelstein, R  Emediato, L  Endler, AMF  Engelfried, J  Eschrich, I  Escobar, CO  Evdokimov, AV  Filimonov, IS  Garcia, FG  Gaspero, M  Giller, I  Golovtsov, VL  Gouffon, P  Gulmez, E  Kangling, H  Jun, SY  Kaya, M  Kilmer, J  Kim, VT  Kochenda, LM  Konorov, I  Kozhevnikov, AP  Krivshich, AG  Kruger, H  Kubantsev, MA  Kubarovsky, VP  Kulyavtsev, AI  Kuropatkin, NP  Kurshetsov, VF  Kushnirenko, A  Kwan, S  Lach, J  Lamberto, A  Landsberg, LG  Larin, I  Leikin, EM  Li, Y  Luksys, M  Lungov, T  Maleev, VP  Mao, D  Mao, C  Mao, Z  Mathew, P  Mattson, M  Matveev, V  McCliment, E  Moinester, MA  Molchanov, VV  Morelos, A  Nelson, KD  Nemitkin, AV  Neoustroev, PV  Newsom, C  Nilov, AP  Nurushev, SB  Ocherashvili, A  Onel, Y  Ozel, E  Ozkorucuklu, S  Penzo, A  Petrenko, SV  Pogodin, P  Procario, M  Prutskoi, VA  Ramberg, E  Rappazzo, GF  Razmyslovich, BV  Rud, VI  Russ, J  Schiavon, P  Simon, J  Sitnikov, AI  Skow, D  Smith, VJ  Srivastava, M  Steiner, V  Stepanov, V  Stutte, L  Svoiski, M  Terentyev, NK  Thomas, GP  Uvarov, LN  Vasiliev, AN  Vavilov, DV  Verebryusov, VS  Victorov, VA  Vishnyakov, VE  Vorobyov, AA  Vorwalter, K  You, J  Zhaog, W  Zheng, S  Zukanovich-Funchal, R  


Journal:
PHYSICS LETTERS B


Issue Date:
2001


Abstract(summary):

We report a precise measurement of the D-s(+/-) meson lifetime. The data were taken by the SELEX experiment (E781) spectrometer using 600 GeV/c Sigma (-), pi (-) and p beams. The measurement has been done using 918 reconstructed D-s(+/-). The lifetime of the D-s(+/-) s is measured to be 472.5 +/- 17.2 +/- 6.6 fs, using K*(892)K-0(+/-) and phi pi (+/-) decay modes. The lifetime ratio of D-s(+/-) to D-0 is 1.145 +/- 0.049. (C) 2001 Elsevier Science B.V. All rights reserved.


Page:
22---28


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