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Optical Transmission Characterization of Fused Silica Materials Irradiated at the CERN Large Hadron Collider
/ Yang, S. (Illinois U., Urbana) ; Tate, A. (Illinois U., Urbana) ; Longo, R. (Illinois U., Urbana) ; Gilarte, M. Sabate (CERN) ; Cerutti, F. (CERN) ; Mazzoni, S. (CERN) ; Grosse Perdekamp, M. (Illinois U., Urbana) ; Bravin, E. (CERN) ; Citron, Z. (Ben Gurion U. of Negev) ; Kühn, B. (Bitfabrik, Rodgau) et al.
The Target Absorbers for Neutrals (TANs) represent one of the most radioactive regions in the Large Hadron Collider (LHC). Seven 40 cm long fused silica rods with different dopant specifications, manufactured by Heraeus, were irradiated in one of the TANs located around the ATLAS experiment by the Beam RAte of Neutrals (BRAN) detector group. [...]
arXiv:2212.03392; FERMILAB-PUB-22-916-AD.-
2023-07-07 - 29 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1055 (2023) 168523
Fulltext: 2212.03392 - PDF; FERMILAB-PUB-22-916-AD - PDF; External link: Fermilab Library Server
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$^{22}$Na activation level measurements of fused silica rods in the LHC target absorber for neutrals compared to simulations
/ Yang, S. (Illinois U., Urbana ; Illinois U., Urbana (main)) ; Gilarte, M. Sabate (CERN) ; Tate, A. (Illinois U., Urbana ; Illinois U., Urbana (main)) ; Santiago, N. (Illinois U., Urbana ; Illinois U., Urbana (main)) ; Longo, R. (Illinois U., Urbana) ; Mazzoni, S. (CERN) ; Cerutti, F. (CERN) ; Bravin, E. (CERN) ; Grosse Perdekamp, M. (Illinois U., Urbana) ; Lerner, G. (CERN) et al.
The Target Absorbers for Neutrals (TANs) are located in a high-intensity radiation environment inside the tunnel of the Large Hadron Collider (LHC). TANs are positioned about $140$ m downstream from the beam interaction points. [...]
arXiv:2204.01937.-
2022-09-01 - 11 p.
- Published in : Phys. Rev. Accel. Beams 25 (2022) 091001
Fulltext: 2204.01937 - PDF; Publication - PDF;
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Proposed Lunar Measurements of $r$-Process Radioisotopes to Distinguish Origin of Deep-sea $^{244}$Pu
/ Wang, Xilu (Beijing, Inst. High Energy Phys. ; UC, Berkeley ; Notre Dame U.) ; Clark, Adam M. (Notre Dame U.) ; Ellis, John (King's Coll. London ; NICPB, Tallinn ; CERN) ; Ertel, Adrienne F. (Illinois U., Urbana) ; Fields, Brian D. (Illinois U., Urbana) ; Fry, Brian J. (AFIT, Ohio) ; Liu, Zhenghai (Illinois U., Urbana) ; Miller, Jesse A. (Illinois U., Urbana ; Boston U.) ; Surman, Rebecca (Notre Dame U.)
$^{244}$Pu has recently been discovered in deep-sea deposits spanning the past 10 Myr, a period that includes two $^{60}$Fe pulses from nearby supernovae. $^{244}$Pu is among the heaviest $r$-process products, and we consider whether it was created in the supernovae, which is disfavored by nucleosynthesis simulations, or in an earlier kilonova event that seeded $^{244}$Pu in the nearby interstellar medium that was subsequently swept up by the supernova debris. [...]
arXiv:2112.09607; KCL-PH-TH/2021-91; CERN-TH-2021-208; N3AS-21-017.-
2023-05-12 - 13 p.
- Published in : Astrophysics 948 (2023) 113
Fulltext: 2112.09607 - PDF; Publication - PDF;
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Do we owe our existence to gravitational waves?
/ Ellis, John (King's Coll. London ; CERN) ; Fields, Brian D. (Illinois U., Urbana) ; Surman, Rebecca (Notre Dame U.)
Two heavy elements essential to human biology are thought to have been produced by the astrophysical $r$-process, which occurs in neutron-rich environments: iodine is a constituent of thyroid hormones that affect many physiological processes including growth and development, body temperature and heart rate, and bromine is essential for tissue development and architecture. Collisions of neutron stars (kilonovae) have been identified as sources of $r$-process elements including tellurium, which is adjacent to iodine in the periodic table, and lanthanides. [...]
arXiv:2402.03593.-
2024-09-16 - 5 p.
- Published in : Phys. Lett. B 858 (2024) 139028
Fulltext: 2402.03593 - PDF; Publication - PDF;
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6.
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Complexity Equals Anything?
/ Belin, Alexandre (CERN) ; Myers, Robert C. (Perimeter Inst. Theor. Phys.) ; Ruan, Shan-Ming (Perimeter Inst. Theor. Phys. ; Waterloo U. ; Kyoto U., Yukawa Inst., Kyoto) ; Sárosi, Gábor (CERN) ; Speranza, Antony J. (Perimeter Inst. Theor. Phys. ; Illinois U., Urbana)
We present a new infinite class of gravitational observables in asymptotically anti–de Sitter space living on codimension-one slices of the geometry, the most famous of which is the volume of the maximal slice. We show that these observables display universal features for the thermofield-double state: they grow linearly in time at late times and reproduce the switchback effect in shock wave geometries. [...]
arXiv:2111.02429; CERN-TH-2021-181; YITP-22-02.-
2022-02-23 - 7 p.
- Published in : Phys. Rev. Lett. 128 (2022) 081602
Fulltext: PDF;
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A Run 4 Zero Degree Calorimeter for CMS
/ Bashan, Y (Ben-Gurion University of the Negev, Dept. of Physics, Beer-Sheva 84105, Israel) ; Citron, Z (Ben-Gurion University of the Negev, Dept. of Physics, Beer-Sheva 84105, Israel) ; Cole, B (Columbia University, Dept. of Physics, New York, NY 10027, USA) ; Grosse Perdekamp, M (University of Illinois at Urbana-Champaign, Physics, Urbana, IL 61801) ; Hase, A (University of Kansas, Dept. of Physics, Lawrence, KS 66045, USA) ; Koeth, T (University of Maryland, Dept. of Chemistry, College Park, MD 20742, USA) ; Lantz, C (University of Illinois at Urbana-Champaign, Physics, Urbana, IL 61801) ; Lascio, S (University of Maryland, Dept. of Chemistry, College Park, MD 20742, USA) ; Longo, R (University of Illinois at Urbana-Champaign, Physics, Urbana, IL 61801) ; MacLean, D (University of Illinois at Urbana-Champaign, Physics, Urbana, IL 61801) et al.
The Run 4 Heavy Ion program of the LHC offers great physics opportunities to CMS and ATLAS [...]
CERN-LHCC-2021-025 ; CMS-TDR-024.
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2021.
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Measurement of the cross section for hard exclusive $\pi^0$ leptoproduction
/ COMPASS Collaboration
We report on a measurement of hard exclusive $\pi^0$ muoproduction on the proton by COMPASS using 160 GeV/$c$ polarised $\mu^+$ and $\mu^-$ beams of the CERN SPS impinging on a liquid hydrogen target. From the average of the measured $\mu^+$ and $\mu^-$ cross sections, the virtual-photon proton cross section is determined as a function of the squared four-momentum transfer between initial and final proton in the range $0.08\,(\text{GeV/}c)^2 < |t| < 0.64\,(\text{GeV/}c)^2$. [...]
arXiv:1903.12030; CERN-EP-2019-049.-
2020-06-10 - 9 p.
- Published in : Phys. Lett. B 805 (2020) 135454
Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from publisher: PDF;
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A Triangle Singularity as the Origin of the $a_1(1420)$
/ Alexeev, G.D. (Dubna, JINR) ; Alexeev, M.G. (Turin U. ; INFN, Turin) ; Amoroso, A. (Turin U. ; INFN, Turin) ; Andrieux, V. (CERN ; Illinois U., Urbana) ; Anosov, V. (Dubna, JINR) ; Antoshkin, A. (Dubna, JINR) ; Augsten, K. (Dubna, JINR ; CTU, Prague) ; Augustyniak, W. (NCBJ, Warsaw) ; Azevedo, C.D.R. (Aveiro U.) ; Badełek, B. (Warsaw U.) et al.
The COMPASS experiment recently discovered a new isovector resonance-like signal with axial-vector quantum numbers, the $a_1(1420)$, decaying to $f_0(980)\pi$. With a mass too close to and a width smaller than the axial-vector ground state $a_1(1260)$, it was immediately interpreted as a new light exotic meson, similar to the $X$, $Y$, $Z$ states in the hidden-charm sector. [...]
arXiv:2006.05342; CERN-EP-2020-104.-
Geneva : CERN, 2021-08-18 - 21 p.
- Published in : Phys. Rev. Lett.
Draft (restricted): PDF; Fulltext: CERN-EP-2020-104 - PDF; 2006.05342 - PDF;
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