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CERN Document Server 2,037 record trovati  1 - 10successivofine  salta al record: La ricerca ha impiegato 0.80 secondi. 
1.
(100)
Evidence for $\nu_\mu \to \nu_\tau$ appearance in the CNGS neutrino beam with the OPERA experiment / OPERA Collaboration
The OPERA experiment is designed to search for $\nu_{\mu} \rightarrow \nu_{\tau}$ oscillations in appearance mode i.e. through the direct observation of the $\tau$ lepton in $\nu_{\tau}$ charged current interactions. [...]
arXiv:1401.2079.- 2014-03-05 - 6 p. - Published in : Phys. Rev. D 89 (2014) 051102 Fulltext: PDF; External link: Preprint
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2.
(91)
First Axion Results from the XENON100 Experiment / XENON100 Collaboration
We present the first results of searches for axions and axion-like-particles with the XENON100 experiment. The axion-electron coupling constant, $g_{Ae}$, has been tested by exploiting the axio-electric effect in liquid xenon. [...]
arXiv:1404.1455.- 2014-09-09 - 7 p. - Published in : Phys. Rev. D Fulltext: PDF; External link: Preprint
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3.
(73)
Measurement of the Charged-Pion Polarizability / COMPASS Collaboration
The COMPASS collaboration at CERN has investigated pion Compton scattering, $\pi^-\gamma\rightarrow \pi^-\gamma$, at centre-of-mass energy below 3.5 pion masses. The process is embedded in the reaction $\pi^-\mathrm{Ni}\rightarrow\pi^-\gamma\;\mathrm{Ni}$, which is initiated by 190 GeV pions impinging on a nickel target. [...]
arXiv:1405.6377; CERN-PH-EP-2014-109; CERN-PH-EP-2014-109.- Geneva : CERN, 2015-02-10 - 6 p. - Published in : Phys. Rev. Lett. 114 (2015) 062002 APS Open Access article: PDF; Draft (restricted): PDF; Fulltext: arXiv:1405.6377 - PDF; CERN-PH-EP-2014-109 - PDF; External link: Interactions.org article
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4.
(64)
Measurement of the $\bar{B}_s^0\to D_s^-D_s^+$ and $\bar{B}_s^0\to D^-D_s^+$ effective lifetimes / LHCb collaboration
The first measurement of the effective lifetime of the $\bar{B}_s^0$ meson in the decay $\bar{B}_s^0\to D_s^-D_s^+$ is reported using a proton-proton collision dataset, corresponding to an integrated luminosity of 3 fb$^{-1}$, collected by the LHCb experiment. The measured value of the $\bar{B}_s^0\to D_s^-D_s^+$ effective lifetime is $1.379\pm0.026\pm0.017$ ps, where the uncertainties are statistical and systematic, respectively. [...]
arXiv:1312.1217; LHCB-PAPER-2013-060; CERN-PH-EP-2013-218; LHCB-PAPER-2013-060; CERN-PH-EP-2013-218.- Geneva : CERN, 2014-03-19 - 9 p. - Published in : Phys. Rev. Lett. 112 (2014) 111802 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; Supplementary related data file(s): ZIP; External link: Preprint
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5.
(64)
Precision measurement of the mass and lifetime of the $\Xi_b^0$ baryon / LHCb collaboration
Using a proton-proton collision data sample corresponding to an integrated luminosity of 3 fb$^{-1}$ collected by LHCb at center-of-mass energies of 7 and 8 TeV, about 3800 $\Xi_b^0\to\Xi_c^+\pi^-$, $\Xi_c^+\to pK^-\pi^+$ signal decays are reconstructed. From this sample, the first measurement of the $\Xi_b^0$ baryon lifetime is made, relative to that of the $\Lambda_b^0$ baryon. [...]
arXiv:1405.7223; CERN-PH-EP-2014-107; LHCB-PAPER-2014-021; LHCB-PAPER-2014-021; CERN-PH-EP-2014-107.- Geneva : CERN, 2014-07-15 - 10 p. - Published in : Phys. Rev. Lett. 113 (2014) 032001 APS Open Access article: PDF; Fulltext: PDF; Related data file(s): ZIP; Related supplementary data file(s): ZIP.ZIP; External link: Preprint
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6.
(61)
Study of orbitally excited $B$ mesons and evidence for a new $B\pi$ resonance / Aaltonen, Timo Antero (Helsinki U. ; Helsinki Inst. of Phys.) ; Amerio, Silvia (INFN, Padua ; Padua U.) ; Amidei, Dante E (Michigan U.) ; Anastassov, Anton Iankov (Fermilab ; Northwestern U.) ; Annovi, Alberto (Frascati) ; Antos, Jaroslav (Comenius U. ; Kosice, IEF) ; Apollinari, Giorgio (Fermilab) ; Appel, Jeffrey A (Fermilab) ; Arisawa, Tetsuo (Waseda U.) ; Artikov, Akram Muzafarovich (Dubna, JINR) et al. /R. C. Group
Using the full CDF Run II data sample, we report evidence for a new resonance, which we refer to as B(5970), found simultaneously in the $B^0\pi^+$ and $B^+\pi^-$ mass distributions with a significance of 4.4 standard deviations. We further report the first study of resonances consistent with orbitally excited $B^{+}$ mesons and an updated measurement of the properties of orbitally excited $B^0$ and $B_s^0$ mesons. [...]
arXiv:1309.5961; FERMILAB-PUB-13-393-E; PUB-13-393-E-(FERMILAB); PUB-13-393-E (FERMILAB).- 2014-07-28 - 14 p. - Published in : Phys. Rev. D 90 (2014) 012013 Fulltext: fermilab-pub-13-393-e - PDF; arXiv:1309.5961 - PDF; External links: Fermilab Today Result of the Week; Fermilab Library Server (fulltext available)
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7.
(60)
Transverse momentum distribution and nuclear modification factor of forward neutral pion in proton–lead collisions at $\sqrt{s_{NN}}$= 5.02 TeV / LHCf Collaboration
The transverse momentum ($p_\text{T}$) distribution for inclusive neutral pions in the very forward rapidity region has been measured, with the Large Hadron Collider forward detector (LHCf), in proton--lead collisions at nucleon-nucleon center-of-mass energies of $\sqrt{s_{NN}} = 5.02$TeV at the LHC. The $p_\text{T}$ spectra obtained in the rapidity range $-11.0 < y_\text{lab} < -8.9$ and $0 < p_\text{T} < 0.6$GeV (in the detector reference frame) show a strong suppression of the production of neutral pions after taking into account ultra-peripheral collisions. [...]
arXiv:1403.7845; CERN-PH-EP-2014-059; CERN-PH-EP-2014-059.- Geneva : CERN, 2014-06-23 - 12 p. - Published in : Phys. Rev. C 89 (2014) 065209 APS Open Access article: PDF; Draft (restricted): PDF; Fulltext: CERN-PH-EP-2014-059 - PDF; arXiv:1403.7845 - PDF; External link: Preprint
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8.
(59)
B_{s,d} -> l+ l- in the Standard Model / Bobeth, Christoph (Munich, Tech. U.) ; Gorbahn, Martin (Liverpool U., Dept. Math. ; Munich, Tech. U.) ; Hermann, Thomas (KIT, Karlsruhe, TTP) ; Misiak, Mikolaj (Warsaw U. ; CERN) ; Stamou, Emmanuel (Munich, Tech. U. ; Weizmann Inst.) ; Steinhauser, Matthias (KIT, Karlsruhe, TTP)
We combine our new results for the O(alpha_em) and O(alpha_s^2) corrections to B_{s,d} -> l^+ l^-, and present updated branching ratio predictions for these decays in the standard model. Inclusion of the new corrections removes major theoretical uncertainties of perturbative origin that have just begun to dominate over the parametric ones. [...]
arXiv:1311.0903; FLAVOUR(267104)-ERC-53; LTH-990; SFB-CPP-13-82; TTP13-033; FLAVOUR(267104)-ERC-53; LTH 990; SFB-CPP-13-82; TTP13-033.- 2014-03-11 - 4 p. - Published in : Phys. Rev. Lett. 112 (2014) 101801 Fulltext: PDF; External link: Preprint
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9.
(59)
Froissart Bound on Total Cross-section without Unknown Constants / Martin, André (CERN) ; Roy, S.M. (Tata Inst.)
We determine the scale of the logarithm in the Froissart bound on total cross-sections using absolute bounds on the D-wave below threshold for $\pi\pi$ scattering. E.g. [...]
arXiv:1306.5210; CERN-PH-TH-2013-113; CERN-PH-TH-2013-113.- 2014-02-25 - 7 p. - Published in : Phys. Rev. D 89 (2014) 045015 APS published version, local copy: PDF; Fulltext: PDF; External link: Preprint
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10.
(58)
String Resonances at Hadron Colliders / Anchordoqui, Luis A. (Lehman Coll.) ; Antoniadis, Ignatios (CERN) ; Dai, De-Chang (Shanghai Jiaotong U.) ; Feng, Wan-Zhe (Munich, Max Planck Inst.) ; Goldberg, Haim (Northeastern U.) ; Huang, Xing (Taiwan, Natl. Normal U.) ; Lust, Dieter (Munich, Max Planck Inst. ; Munich U., ASC) ; Stojkovic, Dejan (SUNY, Buffalo ; Perimeter Inst. Theor. Phys.) ; Taylor, Tomasz R. (Northeastern U.)
[Abridged] We consider extensions of the standard model based on open strings ending on D-branes. Assuming that the fundamental string mass scale M_s is in the TeV range and that the theory is weakly coupled, we discuss possible signals of string physics at the upcoming HL-LHC run (3000 fb^{-1}) with \sqrt{s} = 14 TeV, and at potential future pp colliders, HE-LHC and VLHC, operating at \sqrt{s} = 33 and 100 TeV, respectively. [...]
arXiv:1407.8120; MPP-2014-314; LMU-ASC-48-14; CERN-PH-TH-2014-143; MPP--2014--314; MPP--2014--314; LMU-ASC 48-14; CERN-PH-TH-2014-143.- 2014-09-26 - 47 p. - Published in : Phys. Rev. D 90 (2014) 066013 APS published version, local copy: PDF; Fulltext: PDF; External link: Preprint
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