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NNLO QCD$\times$EW corrections to Z production in the $q\bar{q}$ channel
/ Bonciani, Roberto (Rome U. ; INFN, Rome) ; Buccioni, Federico (Oxford U.) ; Rana, Narayan (INFN, Milan) ; Triscari, Ilario (Milan U.) ; Vicini, Alessandro (CERN ; Milan U. ; INFN, Milan)
We present the first results for the ${\cal O}(\alpha\alpha_s)$ corrections to the total partonic cross section of the process $q\bar q\to Z+X$, with the complete set of contributions, that include photonic and massive weak gauge boson effects. The results are relevant for the precise determination of the hadronic $Z$ boson production cross section. [...]
arXiv:1911.06200; CERN-TH-2019-154; OUTP-19-13P; TIF-UNIMI-2019-17.-
2020-02-29 - 7 p.
- Published in : Phys. Rev. D 101 (2020) 031301
Article from SCOAP3: PDF; Fulltext: PDF;
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Mixed QCD-EW corrections to the neutral-current Drell-Yan process
/ Armadillo, Tommaso (Milan U. ; INFN, Milan) ; Bonciani, Roberto (Florence U. ; INFN, Rome ; Rome U.) ; Buonocore, Luca (CERN) ; Devoto, Simone (Gent U.) ; Grazzini, Massimiliano (Zurich U.) ; Kallweit, Stefan (Zurich U.) ; Rana, Narayan (NISER, Jatni) ; Vicini, Alessandro (Milan U. ; INFN, Milan)
We report on the complete computation of the mixed QCD-electroweak corrections to the neutral-current Drell-Yan process. [...]
CERN-TH-2024-199 ; ZU-TH 56/24 ; TIF-UNIMI-2024-18 ; arXiv:2412.16095.
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MariX, an advanced MHz-class repetition rate X-ray source for linear regime time-resolved spectroscopy and photon scattering
/ Serafini, L (INFN, Milan ; LASA, Segrate) ; Bacci, A (INFN, Milan ; LASA, Segrate) ; Bellandi, A (DESY) ; Bertucci, M (INFN, Milan ; LASA, Segrate) ; Bolognesi, M (Milan U.) ; Bosotti, A (INFN, Milan ; LASA, Segrate) ; Broggi, F (INFN, Milan ; LASA, Segrate) ; Calandrino, R (Milan U., Inst. San Raffaele) ; Camera, F (Milan U. ; INFN, Milan ; LASA, Segrate) ; Canella, F (Milan U.) et al.
The need of a fs-scale pulsed, high repetition rate, X-ray source for time-resolved fine analysis of matter (spectroscopy and photon scattering) in the linear response regime is addressed by the conceptual design of a facility called MariX (Multi-disciplinary Advanced Research Infrastructure for the generation and application of X-rays) outperforming current X-ray sources for the declared scope. MariX is based on the original design of a two-pass two-way superconducting linear electron accelerator, equipped with an arc compressor, to be operated in CW mode (1 MHz). [...]
2019 - 6 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 930 (2019) 167-172
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Efficient $2^3S$ positronium production by stimulated decay from the $3^3P$ level
/ AEgIS Collaboration
We investigate experimentally the possibility of enhancing the production of $2^3S$ positronium atoms by driving the $1^3S$-$3^3P$ and $3^3P$-$2^3S$ transitions, overcoming the natural branching ratio limitation of spontaneous decay from $3^3P$ to $2^3S$. The decay of $3^3P$ positronium atoms towards the $2^3S$ level has been effciently stimulated by a 1312.2nm broadband IR laser pulse. [...]
arXiv:1904.09004.-
2019-12-09 - 6 p.
- Published in : Phys. Rev. A 100 (2019) 063414
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Calibration and Equalisation of Plastic Scintillator Detectors for Antiproton Annihilation Identification Over Positron/Positronium Background
/ Zurlo, Nicola (U. Brescia ; INFN, Pavia) ; Amsler, C (Stefan Meyer Inst. Subatomare Phys.) ; Antonello, M (INFN, Milan ; Insubria U., Como) ; Belov, A (Moscow, INR) ; Bonomi, G (INFN, Pavia ; Brescia U.) ; Brusah, R S (TIFPA-INFN, Trento) ; Caccia, M (INFN, Milan ; Insubria U., Como) ; Camper, A (CERN) ; Caravita, R (CERN) ; Castelli, F (INFN, Milan ; Milan U.) et al.
In this contribution, the system of the external plastic scintillator slabs of the AEgIS experiment is presented. These slabs, surrounding the superconducting magnet and operating at room temperature, are read out by photomultiplier tubes (PMTs) that are calibrated and equalised to be exploited as a whole detector with useful segmentation and redundancy to effectively detect single antiparticle annihilations. [...]
2020 - 11 p.
- Published in : Acta Phys. Pol. B 51 (2020) 213-223
Fulltext: PDF;
In : 3rd Jagiellonian Symposium on Fundamental and Applied Subatomic Physics, Kraków, Poland, 24 - 28 Jun 2019, pp.213-223
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Experiments with low-energy antimatter
/ Consolati, G (Milan Polytechnic ; INFN, Milan) ; Aghion, S (Milan Polytechnic ; INFN, Milan) ; Amsler, C (Bern U., LHEP) ; Ariga, A (Bern U., LHEP) ; Ariga, T (Bern U., LHEP) ; Belov, A (Moscow, INR) ; Bonomi, G (INFM, Brescia ; INFN, Pavia) ; Bräunig, P (Kirchhoff Inst. Phys.) ; Bremer, J (CERN) ; Brusa, R S (INFN, Padua ; Trento U. ; INFN, Trento) et al.
Investigations on antimatter allow us to shed light on fundamental issues of contemporary physics. The only antiatom presently available, antihydrogen, is produced making use of the Antiproton Decelerator (AD) facility at CERN. [...]
2015 - 7 p.
- Published in : EPJ Web Conf. 96 (2015) 01007
EDP Sciences Open Access article: PDF;
In : Dark Matter, Hadron Physics and Fusion Physics, Messina, Italy, 24 - 26 Sep 2014, pp.01007
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Protocol for pulsed antihydrogen production in the AE$\overline{g}$IS apparatus
/ Tietje, I C (CERN ; Berlin, Tech. U.) ; Amsler, C (Stefan Meyer Inst. Subatomare Phys.) ; Antonello, M (Insubria U., Como ; INFN, Milan) ; Belov, A (Moscow, INR) ; Bonomi, G (INFM, Brescia ; INFN, Pavia) ; Brusa, R S (Trento U. ; TIFPA-INFN, Trento) ; Caccia, M (Insubria U., Como ; INFN, Milan) ; Camper, A (CERN) ; Caravita, R (TIFPA-INFN, Trento) ; Castelli, F (INFN, Milan ; Milan U.) et al.
The AEḡIS collaboration’s main goal is to measure the acceleration of antihydrogen it ($\textit{H}$) due to gravity. The experimental scheme is to form a pulsed beam whose vertical deflection is then measured by means of a moiré deflectometer [1]. [...]
2020 - 12 p.
- Published in : J. Phys.: Conf. Ser. 1612 (2020) 012025
Fulltext: PDF;
In : 18th Symmetries in Science, Bregenz, Austria, 4 - 9 Aug 2019, pp.012025
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