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CERN Accelerating science

CERN Preprints

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2021-05-06
15:34
Angular analysis of $B^0 \to D^{*-}D_s^{*+}$ with $D_s^{*+} \to D_s^+ \gamma$ decays
The first full angular analysis of the $B^0 \to D^{*-} D_s^{*+}$ decay is performed using 6 fb$^{-1}$ of $pp$ collision data collected with the LHCb experiment at a centre-of-mass energy of 13 TeV. [...]
CERN-EP-2021-056 ; LHCB-PAPER-2021-006.
- 2021.
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2021-05-06
04:14
Searches for supersymmetry in CMS / Sarkar, Uttiya
The results from the CMS search for supersymmetric particles based on Run-2 data recorded at a center-of-mass energy of 13 TeV are summarized. [...]
arXiv:2105.01629.
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2021-05-06
04:13
Axion Dark Matter: What is it and Why Now? / Chadha-Day, Francesca (Durham U., IPPP) ; Ellis, John (King's Coll. London ; CERN ; NICPB, Tallinn) ; Marsh, David J.E. (King's Coll. London)
The axion has emerged in recent years as a leading particle candidate to provide the mysterious dark matter in the cosmos, as we review here for a general scientific audience. [...]
arXiv:2105.01406 ; KCL-PH-TH/2021-20 ; CERN-TH-2021-045 ; IPPP/20/91.
- 23 p.
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2021-05-05
12:30
Measurement of $CP$ asymmetry in $D^0 \to K^0_S K^0_S$ decays / LHCb Collaboration
A measurement of the $CP$ asymmetry in $D^0 \to K^0_S K^0_S$ decays is reported, based on a data sample of proton-proton collisions collected by the LHCb experiment from 2015 to 2018, corresponding to an integrated luminosity of 6 fb$^{-1}$. [...]
arXiv:2105.01565 ; LHCb-PAPER-2020-047 ; CERN-EP-2021-058 ; LHCB-PAPER-2020-047.
- 2021.
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2021-05-05
04:01
Covariant density and velocity perturbations of the quasi-Newtonian cosmological model in $f(T)$ gravity / Sami, Heba (UCT-CERN Res. Ctr.) ; Sahlu, Shambel (Vainu Bappu Observ. ; Addis Ababa U.) ; Abebe, Amare (UCT-CERN Res. Ctr.) ; Dunsby, Peter K.S. (Cape Town U., Dept. Math.)
We investigate classes of shear-free cosmological dust models with irrotational fluid flows within the framework of $f(T)$ gravity. [...]
arXiv:2105.00646.
- 30 p.
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2021-05-05
04:01
From Veltman's conditions to Finite Unification / Mondragón, Myriam (Mexico U.) ; Patellis, Gregory (Natl. Tech. U., Athens) ; Zoupanos, George (Natl. Tech. U., Athens ; Munich, Max Planck Inst. ; CERN)
First we review Veltman's suggestion to attack the naturalness problem in the Standard model by requiring absence of quadratic divergences and the resulting mass formula. [...]
arXiv:2105.00235.
- 27 p.
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2021-05-05
04:00
Storage Rings and Gravitational Waves: Summary and Outlook / Berlin, A. (New York U.) ; Brüggen, M. (Hamburg U.) ; Buchmueller, O. (Imperial Coll., London) ; Chen, P. (Taiwan, Natl. Taiwan U.) ; D'Agnolo, R.T. (IMCCE, Paris) ; Deng, R. (CAS, SARI, Shanghai) ; Ellis, J.R. (King's Coll. London) ; Ellis, S. (IMCCE, Paris) ; Franchetti, G. (Darmstadt, GSI) ; Ivanov, A. (Vienna U.) et al.
We report some highlights from the ARIES APEC workshop on ``Storage Rings and Gravitational Waves'' (SRGW2021), held in virtual space from 2 February to 18 March 2021, and sketch a tentative landscape for using accelerators and associated technologies for the detection or generation of gravitational waves..
arXiv:2105.00992 ; KCL-PH-TH/2021-28 ; CERN-TH-2021-068.
- 17 p.
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2021-05-05
04:00
Comparative evaluation of analogue front-end designs for the CMS Inner Tracker at the High Luminosity LHC / Emriskova, Natalia (CERN ; Strasbourg, IPHC)
The CMS Inner Tracker, made of silicon pixel modules, will be entirely replaced for the operation at the High Luminosity LHC. [...]
arXiv:2105.00070.
- 31 p.
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2021-05-05
04:00
The TopFlavor scheme in the context of $W'$ searches at LHC / Calabrese, Roberta (Naples U. ; INFN, Naples) ; De Iorio, Agostino (Naples U. ; INFN, Naples) ; Fiorillo, Damiano F.G. (Naples U. ; INFN, Naples) ; Iorio, Alberto Orso Maria (Naples U. ; INFN, Naples) ; Morisi, Stefano (Naples U. ; INFN, Naples) ; Miele, Gennaro (Naples U. ; INFN, Naples)
Many extensions of the Standard Model predict the existence of new charged or neutral gauge bosons, with a wide variety of phenomenological implications depending on the model adopted. [...]
arXiv:2104.06720.
- 11 p.
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2021-05-04
06:00
20-ps resolution Clock Distribution Network for a fast-timing single photon detector / Egidos, N (CERN) ; Ballabriga, R (CERN) ; Bandi, F (Seville U.) ; Campbell, M (CERN) ; Gascon, D (ICC, Barcelona U.) ; Gomez, S (ICC, Barcelona U.) ; Fernandez-Tenllado, J M (CERN) ; Llopart, X (CERN) ; Manera, R (ICC, Barcelona U.) ; Mauricio, J (ICC, Barcelona U.) et al.
The time resolution of active pixel sensors whose timestamp mechanism is based on Time-to-Digital Converters is critically linked to the accuracy in the distribution of the master clock signal that latches the timestamp values across the detector. [...]
2021. - 13 p.
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