Results 81 to 90 of about 4,842 (140)

Small-Field and Scale-Free: Inflation and Ekpyrosis at their Extremes

, 2018
There is increasing evidence from string theory that effective field theories are only reliable over approximately sub-Planckian field excursions.
Lehners, Jean-Luc
core   +1 more source

Collider and CMB complementarity of leptophilic dark matter with light Dirac neutrinos

Journal of High Energy Physics
We study the discovery prospects of leptophilic dark matter (DM) in future lepton colliders by considering the light neutrinos to be of Dirac type. Adopting an effective field theory (EFT) approach, we write down dimension six operators connecting the ...
Debasish Borah, Nayan Das, Sahabub Jahedi, Bhavya Thacker   +3 more
doaj   +1 more source

New Detectors to Explore the Lifetime Frontier

, 2017
Long-lived particles (LLPs) are a common feature in many beyond the Standard Model theories, including supersymmetry, and are generically produced in exotic Higgs decays.
Chou, John Paul, Curtin, David, Lubatti, H. J.   +2 more
core   +2 more sources

Results from PAMELA, ATIC and FERMI : Pulsars or Dark Matter ?

, 2010
It is well known that the dark matter dominates the dynamics of galaxies and clusters of galaxies. Its constituents remain a mystery despite an assiduous search for them over the past three decades.
A Arvanitaki, A Arvanitaki, A Dekel, A Djouadi, A Ibarra, A Katz, A Palazzo, AM Atoian, AW Strong, AW Strong, C Boehm, C Evoli, CHANDA J JOG, D Clowe, D Hooper, D Hooper, D Hooper, D Hooper, D Hooper, D Malyshev, D Pfenniger, DEBTOSH CHOWDHURY, DJH Chung, E Nardi, E Witten, EA Baltz, G Belanger, G Bertone, G Bertone, G Gelmini, G Gelmini, G Jungman, G Servant, G Weidenspointner, H Yuksel, HC Cheng, I Büsching, I Cholis, I Gogoladze, I Gogoladze, IFM Albuquerque, IFM Albuquerque, IV Moskalenko, J Binney, J Chang, J Gil, J Hisano, J Hubisz, J Kopp, J Lavalle, J Lesgourgues, JA Peacock, JD Bekenstein, Je Alam, JF Navarro, L Randall, L Randall, M Drees, M Ibe, M Milgrom, M Valluri, M Viel, MA Acero, N Arkani-Hamed, N Arkani-Hamed, N Arkani-Hamed, N Arkani-Hamed, N Borodatchenkova, O Tiret, P Bhattacharjee, P Fayet, P Gondolo, P Jean, QH Cao, R Barbieri, R Bernabei, RD Peccei, RD Peccei, S Chang, S Coutu, S Dodelson, S Gopalakrishna, S Torii, SUDHIR K VEMPATI, SW Barwick, T Delahaye, T Schwetz, V Rubin, V Trimble, W Buchmuller, W Buchmuller, WJG Blok de, Y Sofue   +92 more
core   +1 more source

Beyond the Standard Model

, 2010
Six major frameworks have emerged attempting to describe particle physics beyond the Standard Model. Despite their different theoretical genera, these frameworks have a number of common phenomenological features and problems.
Lykken, Joseph D.
core   +1 more source

An O(750) GeV Resonance and Inflation

, 2016
We study the possibility of a heavy scalar or pseudoscalar in TeV-scale beyond the Standard Model scenarios being the inflaton of the early universe in light of the recent O(750) GeV diphoton excess at the LHC.
Hamada, Yuta, Noumi, Toshifumi, Shiu, Gary, Sun, Sichun   +3 more
core   +2 more sources

Cosmic millicharge background and reheating probes

Journal of High Energy Physics
We demonstrate that the searches for dark sector particles can provide probes of reheating scenarios, focusing on the cosmic millicharge background produced in the early universe.
Xucheng Gan, Yu-Dai Tsai
doaj   +1 more source

Detection of early-universe gravitational-wave signatures and fundamental physics. [PDF]

Gen Relativ Gravit, 2022
Caldwell R, Cui Y, Guo HK, Mandic V, Mariotti A, No JM, Ramsey-Musolf MJ, Sakellariadou M, Sinha K, Wang LT, White G, Zhao Y, An H, Bian L, Caprini C, Clesse S, Cline JM, Cusin G, Fornal B, Jinno R, Laurent B, Levi N, Lyu KF, Martinez M, Miller AL, Redigolo D, Scarlata C, Sevrin A, Haghi BSE, Shu J, Siemens X, Steer DA, Sundrum R, Tamarit C, Weir DJ, Xie KP, Yang FW, Zhou S.   +37 more
europepmc   +1 more source

Absence of one-loop effects on large scales from small scales in non-slow-roll dynamics

Journal of High Energy Physics
We question the existence of one-loop corrections to the large-scale power spectrum from small-scale modes in non-slow-roll dynamics which are not volume suppressed by the ratio of the short to long distance scales. One-loop contributions proportional to
Jacopo Fumagalli
doaj   +1 more source

The deep space quantum link: prospective fundamental physics experiments using long-baseline quantum optics. [PDF]

EPJ Quantum Technol, 2022
Mohageg M, Mazzarella L, Anastopoulos C, Gallicchio J, Hu BL, Jennewein T, Johnson S, Lin SY, Ling A, Marquardt C, Meister M, Newell R, Roura A, Schleich WP, Schubert C, Strekalov DV, Vallone G, Villoresi P, Wörner L, Yu N, Zhai A, Kwiat P.   +21 more
europepmc   +1 more source