CERN Accelerating science

CERN Document Server 2,051 εγγραφές βρέθηκαν  1 - 10επόμενοτέλος  μετάβαση στην εγγραφή: Η έρευνα πήρε 2.30 δευτερόλεπτα. 
1.
Search for the $B_c$ meson / DELPHI Collaboration
constant over the range of predicted $B_c\upm$ lifetimes..
CERN-PPE-96-194.- Geneva : CERN, 1997 - 18 p. - Published in : Phys. Lett. B 398 (1997) 207-222 Fulltext: PDF; - CERN library copies
2.
Study of radiative leptonic events with hard photons and search for excited charged leptons at $\sqrt{s}$ = 130-136 GeV / DELPHI Collaboration
During the last 1995 data acquisition period at LEP, the DELPHI experiment collected an integrated luminosity of $5.9$ pb$^{-1}$ at centre-of-mass energies of 130 GeV and 136 GeV. Radiative leptonic events ($e, \mu, \tau$) with high energy photons were studied and compared to Standard Model predictions. [...]
CERN-PPE-96-060.- Geneva : CERN, 1996 - 15 p. - Published in : Phys. Lett. B 380 (1996) 480-490 Fulltext: PDF; - CERN library copies
3.
Measurement and interpretation of the W-pair cross-section in $e^+ e^-$ interactions at 161 GeV / DELPHI Collaboration
In 1996 LEP ran at a centre-of-mass energy of 161~GeV, just above the threshold of W-pair production. DELPHI accumulated data corresponding to an integrated luminosity of $9.93 {\mathrm{~pb^{-1}}}$, and observed 29 events that are considered as candidates for W-pair production. [...]
CERN-PPE-97-009.- Geneva : CERN, 1997 - 16 p. - Published in : Phys. Lett. B 397 (1997) 158-170 Fulltext: PDF; - CERN library copies
4.
Search for anomalous production of single photons at $\sqrt{s}$ = 130 and 136 GeV / DELPHI Collaboration
This letter reports the results of the measurement of single photon production in the reaction $e^+e^- \rightarrow \gamma +$ invisible particles at centre-of-mass energies $\sqrt{s}=$~130 and 136 GeV and an integrated luminosity of 5.83~pb$
CERN-PPE-96-061.- Geneva : CERN, 1996 - 14 p. - Published in : Phys. Lett. B 380 (1996) 471-479 Fulltext: PDF; - CERN library copies
5.
A precise measurement of the $B^{0}_{d}$ meson lifetime using a new technique / DELPHI Collaboration
From data recorded by DELPHI between 1991 and 1994, which correspond to 3.2 million hadronic $\mbox{Z}^0$ decays, a measurement of the $\Bdb$ meson lifetime has been performed based on the inclusive reconstruction of $3520 \pm 150$ semileptonic decays of the type \bc $\Bdb \rightarrow \Dstarp ~X~\ell^-~ \overline{\nu_{\ell}}, $ \ec The result is: \bc $\tau(\Bdb) = 1.537~\pm 0.041 (stat.) \pm 0.039 (syst.) ~\mathrm{ps}$. \ec \noindent The contribution to the systematic uncertainty which depends on external errors is $\pm 0.014~\mathrm{ps}$..
CERN-PPE-96-139.- Geneva : CERN, 1997 - 25 p. - Published in : Z. Phys. C 74 (1997) 19-32
- Published in : Z. Phys. C 75 (1997) 579 (Erratum) - CERN library copies
6.
Search for Lepton Flavour Number violating $Z^0$-Decays / DELPHI Collaboration
A search for lepton flavour number violating $Z^0$ decays in the channels \begin{center} $Z^0\rightarrow \mu\tau$,\\ $Z^0\rightarrow e\tau$, \\ $Z^0\rightarrow e\mu$, \\ \end{center} using the DELPHI detector with data collected during the 1991--94 LEP runs, is described. No signal was found. [...]
CERN-PPE-96-129.- Geneva : CERN, 1997 - 21 p. - Published in : Z. Phys. C 73 (1997) 243-251 Fulltext: PDF; - CERN library copies
7.
Search for excited leptons in $e^+ e^-$ collisions at $\sqrt{s}$ =161 GeV / DELPHI Collaboration
A search with the DELPHI detector at LEP for excited leptons ($e^*$, $\mu^*$, $\tau^*$ and $\nu^*$) decaying through $\gamma$, W or Z transitions is reported. The data used correspond to an integrated luminosity of 10 pb$^{-1}$ at an $e^+e^-$ centre-of-mass energy of 161 GeV. [...]
CERN-PPE-96-169.- Geneva : CERN, 1997 - 22 p. - Published in : Phys. Lett. B 393 (1997) 245-260 Fulltext: PDF; - CERN library copies
8.
Measurement of the transverse spin correlation in $Z \to \tau^+\tau^-$ decays / DELPHI Collaboration
The measurement of the correlation between the transverse spin components of $\tau^+\tau^-$ pairs collected during 1992 to 1994 with the DELPHI detector at LEP1 is presented. A value \begin{center} $C_{TT}$~=~0.87~$\pm$~0.20~(stat.)~$^{+~0.10}_{-~0.12}$~(syst.) \end{center} was obtained for the correlation parameter, in agreement with the St1AU LYi,
CERN-PPE-97-034.- Geneva : CERN, 1997 - 19 p. - Published in : Phys. Lett. B 404 (1997) 194-206 Fulltext: PDF; - CERN library copies
9.
Measurement of Correlations between Pions from Different W's in $e^+ e^- \rightarrow W^+ W^-$ Events / DELPHI Collaboration
Correlations between pions from different Ws in $e^+e^-
CERN-PPE-97-030.- Geneva : CERN, 1997 - 15 p. - Published in : Phys. Lett. B 401 (1997) 181-191 Fulltext: PDF; - CERN library copies
10.
Search for neutralinos, scalar leptons and scalar quarks in $e^+ e^-$ interactions at $\sqrt{s}$=130 GeV and 136 GeV / DELPHI Collaboration
Using data accumulated by DELPHI during the November 1995 LEP run at 130~GeV -- 136~GeV, searches have been made for events with jets or leptons in conjunction with missing momentum. The results are interpreted in terms of limits on the production of neutralinos, scalar leptons, and scalar quarks..
CERN-PPE-96-110; BERGEN-1996-02.- Geneva : CERN, 1996 - 19 p. - Published in : Phys. Lett. B 387 (1996) 651-666 Fulltext: PDF; - CERN library copies

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