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2026-06-24
04:02
Counting axions with IAXO / Grinstein, Benjamín (UC, San Diego) ; Miró, Carlos (INFN, Turin) ; Quílez Lasanta, Pablo (UC, San Diego ; CERN)
The existence of multiple axion species is a generic prediction of a number of extensions of the Standard Model. [...]
CERN-TH/2026-118 ; arXiv:2606.20826. - 21.
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2026-06-24
04:01
Angular Analysis of $B \to D^{*}\ell \barν_{\ell}$ from Lattice and Experiment: $|V_{cb}|$ and New Physics Constraints / Bordone, Marzia (U. Mainz, PRISMA) ; Heald, Ollie (Southampton U.) ; Jüttner, Andreas (Southampton U. ; CERN)
We present a combined angular analysis within and beyond the Standard Model (SM) of experimental measurements for the $B \to D^{*}\ell \barν_{\ell}$ angular coefficients provided by the Belle collaboration, together with lattice-calculated hadronic form-factor data from the HPQCD, JLQCD, and FNAL/MILC collaborations. [...]
CERN-TH-2026-126 ; MITP-26-026 ; arXiv:2606.23410. - 52.
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2026-06-24
04:00
Aspects of Witten Diagrams for Holographic Defects / Carmi, Dean (CERN ; Haifa U., Oranim ; Haifa U.) ; Ghosh, Sudip (Haifa U.) ; Sharma, Trakshu (Haifa U.)
In this paper, we study the conformal block decomposition of Witten diagrams for $d$-dimensional holographic CFTs in the presence of a $p$-dimensional conformal defect. [...]
arXiv:2606.17719. - 57.
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2026-06-24
04:00
Asymptotic limits of constrained instantons / Elder, Benjamin (Imperial Coll., London) ; Gawrych, Kinga (Imperial Coll., London) ; Rajantie, Arttu (Imperial Coll., London ; CERN ; Oxford U., Theor. Phys.)
We revisit the topic of false vacuum decay in field theory. [...]
CERN-TH-2026-077 ; Imperial-TP-2026-BE-1 ; arXiv:2606.21561. - 19.
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2026-06-24
04:00
Phenomenology of heavy-flavour jet angularities at hadron colliders / Ghira, Andrea (Munich, Tech. U.) ; Mai, Lorenzo (Genoa U. ; INFN, Genoa) ; Marzani, Simone (Genoa U. ; INFN, Genoa) ; Reichelt, Daniel (CERN) ; Schumann, Steffen (Gottingen U.) ; Stöcker, Leon (Gottingen U.)
We compute resummed and matched predictions for jet angularities in hadronic Z+jet events, where the jet is initiated by a b-quark. [...]
CERN-TH-2026-137 ; MCNET-26-14 ; arXiv:2606.20798. - 50.
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2026-06-24
04:00
Signatures of gravity-mediated dark matter interaction in theories with large extra dimensions / Clarke, A. (Minnesota U.) ; Flambaum, V.V. (New South Wales U.) ; Pospelov, M. (Minnesota U. ; CERN) ; Samsonov, I.B. (New South Wales U.)
Dark matter particles that couple to the Standard Model only through gravity are usually regarded as inaccessible to laboratory detection. [...]
arXiv:2606.23178. - 8.
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2026-06-23
14:26
Differential measurement of the branching fraction and $CP$ asymmetry of the decay $B^+\to \pi^+\mu^+\mu^-$ / LHCb Collaboration
Differential measurements of the branching fraction and $C\!P$ asymmetry of the decay $B^\pm\to \pi^\pm\mu^+\mu^-$ are performed in intervals of the dimuon mass squared, $q^2$, using proton-proton collision data corresponding to an integrated luminosity of 9 fb$^-1$ recorded by the LHCb experiment at centre-of-mass energies of 7 TeV, 8 TeV and 13 TeV. [...]
arXiv:2606.23646 ; CERN-EP-2026-163 ; LHCb-PAPER-2026-016. - 2026 - 27 p, 27.
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2026-06-22
10:19
Centrality dependence of charged-hadron pseudorapidity distributions in oxygen-oxygen collisions at $ \sqrt{\smash[b]{s_{_{\mathrm{NN}}}}} = $ 5.36 TeV
We report the first measurement of charged-hadron pseudorapidity ($ \eta $) distributions in oxygen-oxygen ($ \mathrm{OO} $) collisions at a nucleon-nucleon center-of-mass energy of $ \sqrt{\smash[b]{s_{_{\mathrm{NN}}}}} = $ 5.36 TeV. [...]
CERN-EP-2026-153 ; CMS-HIN-25-010-003. - 2026
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2026-06-20
04:34
Partial-wave unitarity and long-range interactions / Plestid, Ryan (CERN) ; Lasanta, Pablo Quílez (CERN)
Theories with massless particles contain $t$-channel (forward scattering) singularities that cause standard fixed order expressions for partial-wave amplitudes to be ill-defined. [...]
CERN-TH/2026-119 ; arXiv:2606.19432. - 13.
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2026-06-20
04:34
Three-particle di-light-cone distribution amplitudes of the $B$-meson in heavy-quark effective theory / Bartocci, Riccardo (KIT, Karlsruhe, TP ; KIT, Karlsruhe, IAP) ; Böer, Philipp (CERN) ; Feldmann, Thorsten (Siegen U.) ; Ferré, Max (U. Mainz, PRISMA) ; Gubernari, Nico (Bonn U., HISKP) ; Vladimirov, Daniel (Siegen U.)
We present a systematic study of the three-particle di-light-cone distribution amplitudes (DLCDAs) of the $B$-meson. [...]
CERN-TH-2026-144 ; SI-HEP-2026-12 ; P3H-26-044 ; MITP-26-029 ; KA-TP-12-2026 ; arXiv:2606.20267. - 25.
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