Related papers: Global QCD Analysis and Dark Photons

Evidence for and implications of a dark photon

We performed the first global QCD analysis of electron-nucleon deep-inelastic scattering and related high-energy data by including the contribution from a dark photon. Our results revealed a significant reduction in $\chi^2$ relative to the…

High Energy Physics - Phenomenology · Physics 2025-06-30 X. G. Wang , A. W. Thomas

Constraints on the $U(1)_{B-L}$ model from global QCD analysis

We perform the first global QCD analysis of electron-nucleon deep-inelastic scattering and related high-energy data including the beyond the Standard Model $U(1)_{B-L}$ gauge boson, $Z'$. Contrary to the dark photon case, we find no…

High Energy Physics - Phenomenology · Physics 2025-01-24 X. G. Wang , N. T. Hunt-Smith , W. Melnitchouk , N. Sato , A. W. Thomas

Searching a Dark Photon with HADES

We present a search for the e+e- decay of a hypothetical dark photon, also names U vector boson, in inclusive dielectron spectra measured by HADES in the p (3.5 GeV) + p, Nb reactions, as well as the Ar (1.756 GeV/u) + KCl reaction. An…

High Energy Physics - Experiment · Physics 2013-11-04 HADES Collaboration , G. Agakishiev , A. Balanda , D. Belver , A. Belyaev , J. C. Berger-Chen , A. Blanco , M. Boehmer , J. L. Boyard , P. Cabanelas , S. Chernenko , A. Dybczak , E. Epple , L. Fabbbietti , O. Fateev , P. Finocchiaro , P. Fonte , J. Friese , I. Froehlich , T. Galatyuk , J. A. Garzon , R. Gernhaeuser , K. Goebel , M. Golubeva , D. Gonzalez-Diaz , F. Guber , M. Gumberidze , T. Heinz , T. Hennino , R. Holzmann , A. Ierusalimov , I. Iori , A. Ivashkin , M. Jurkovic , B. Kaempfer , T. Karavicheva , I. Koenig , W. Koenig , B. W. Kolb , G. Kornakov , R. Kotte , A. Krasa , F. Krizek , R. Kruecken , H. Kuc , W. Kuehn , A. Kugler , A. Kurepin , V. Ladygin , R. Lalik , S. Lang , K. Lapidus , A. Lebedev , T. Liu , L. Lopes , M. Lorenz , L. Maier , A. Mangiarotti , J. Markert , V. Metag , B. Michalska , J. Michel , C. Muentz , L. Naumann , Y. C. Pachmayer , M. Palka , Y. Parpottas , V. Pechenov , O. Pechenova , V. Petousis , J. Pietraszko , W. Przygoda , B. Ramstein , A. Reshetin , A. Rustamov , A. Sadovsky , P. Salabura , T. Scheib , H. Schuldes , A. Schmah , E. Schwab , J. Siebenson , Yu. G. Sobolev , S. Spataro , B. Spruck , H. Stroebele , J. Stroth , C. Sturm , A. Tarantola , K. Teilab , P. Tlusty , M. Traxler , R. Trebacz , H. Tsertos , T. Vasiliev , V. Wagner , M. Weber , C. Wendisch , J. Wuestenfeld , S. Yurevich , Y. Zanevsky

Search for dark photons from neutral meson decays in $p$$+$$p$ and $d$$+$Au collisions at $\sqrt{s_{_{NN}}}$=200 GeV

The standard model (SM) of particle physics is spectacularly successful, yet the measured value of the muon anomalous magnetic moment $(g-2)_\mu$ deviates from SM calculations by 3.6$\sigma$. Several theoretical models attribute this to the…

Nuclear Experiment · Physics 2015-03-17 A. Adare , S. Afanasiev , C. Aidala , N. N. Ajitanand , Y. Akiba , R. Akimoto , H. Al-Bataineh , H. Al-Ta'ani , J. Alexander , M. Alfred , K. R. Andrews , A. Angerami , K. Aoki , N. Apadula , L. Aphecetche , E. Appelt , Y. Aramaki , R. Armendariz , J. Asai , H. Asano , E. C. Aschenauer , E. T. Atomssa , R. Averbeck , T. C. Awes , B. Azmoun , V. Babintsev , M. Bai , G. Baksay , L. Baksay , A. Baldisseri , N. S. Bandara , B. Bannier , K. N. Barish , P. D. Barnes , B. Bassalleck , A. T. Basye , S. Bathe , S. Batsouli , V. Baublis , C. Baumann , A. Bazilevsky , M. Beaumier , S. Beckman , S. Belikov , R. Belmont , J. Ben-Benjamin , R. Bennett , A. Berdnikov , Y. Berdnikov , J. H. Bhom , A. A. Bickley , D. Black , D. S. Blau , J. G. Boissevain , J. Bok , J. S. Bok , H. Borel , K. Boyle , M. L. Brooks , D. Broxmeyer , J. Bryslawskyj , H. Buesching , V. Bumazhnov , G. Bunce , S. Butsyk , C. M. Camacho , S. Campbell , A. Caringi , P. Castera , B. S. Chang , W. C. Chang , J. -L. Charvet , C. -H. Chen , S. Chernichenko , C. Y. Chi , M. Chiu , I. J. Choi , J. B. Choi , R. K. Choudhury , P. Christiansen , T. Chujo , P. Chung , A. Churyn , O. Chvala , V. Cianciolo , Z. Citron , B. A. Cole , Z. Conesa del Valle , M. Connors , P. Constantin , M. Csanád , T. Csörgő , T. Dahms , S. Dairaku , I. Danchev , K. Das , A. Datta , M. S. Daugherity , G. David , M. K. Dayananda , K. DeBlasio , K. Dehmelt , A. Denisov , D. d'Enterria , A. Deshpande , E. J. Desmond , K. V. Dharmawardane , O. Dietzsch , L. Ding , A. Dion , J. H. Do , M. Donadelli , O. Drapier , A. Drees , K. A. Drees , A. K. Dubey , J. M. Durham , A. Durum , D. Dutta , V. Dzhordzhadze , L. D'Orazio , S. Edwards , Y. V. Efremenko , F. Ellinghaus , T. Engelmore , A. Enokizono , H. En'yo , S. Esumi , K. O. Eyser , B. Fadem , N. Feege , D. E. Fields , M. Finger , M. Finger , F. Fleuret , S. L. Fokin , Z. Fraenkel , J. E. Frantz , A. Franz , A. D. Frawley , K. Fujiwara , Y. Fukao , T. Fusayasu , C. Gal , P. Gallus , P. Garg , I. Garishvili , H. Ge , F. Giordano , A. Glenn , H. Gong , X. Gong , M. Gonin , J. Gosset , Y. Goto , R. Granier de Cassagnac , N. Grau , S. V. Greene , G. Grim , M. Grosse Perdekamp , Y. Gu , T. Gunji , L. Guo , H. Guragain , H. -Å. Gustafsson , T. Hachiya , A. Hadj Henni , J. S. Haggerty , K. I. Hahn , H. Hamagaki , J. Hamblen , R. Han , S. Y. Han , J. Hanks , C. Harper , E. P. Hartouni , K. Haruna , S. Hasegawa , K. Hashimoto , E. Haslum , R. Hayano , X. He , M. Heffner , T. K. Hemmick , T. Hester , J. C. Hill , M. Hohlmann , R. S. Hollis , W. Holzmann , K. Homma , B. Hong , T. Horaguchi , Y. Hori , D. Hornback , T. Hoshino , J. Huang , S. Huang , T. Ichihara , R. Ichimiya , H. Iinuma , Y. Ikeda , K. Imai , Y. Imazu , J. Imrek , M. Inaba , A. Iordanova , D. Isenhower , M. Ishihara , T. Isobe , M. Issah , A. Isupov , D. Ivanischev , D. Ivanishchev , Y. Iwanaga , B. V. Jacak , S. J. Jeon , M. Jezghani , J. Jia , X. Jiang , J. Jin , D. John , B. M. Johnson , T. Jones , E. Joo , K. S. Joo , D. Jouan , D. S. Jumper , F. Kajihara , S. Kametani , N. Kamihara , J. Kamin , S. Kaneti , B. H. Kang , J. H. Kang , J. S. Kang , J. Kapustinsky , K. Karatsu , M. Kasai , D. Kawall , M. Kawashima , A. V. Kazantsev , T. Kempel , J. A. Key , V. Khachatryan , A. Khanzadeev , K. Kihara , K. M. Kijima , J. Kikuchi , A. Kim , B. I. Kim , C. Kim , D. H. Kim , D. J. Kim , E. Kim , E. -J. Kim , H. -J. Kim , M. Kim , S. H. Kim , Y. -J. Kim , Y. K. Kim , E. Kinney , K. Kiriluk , Á. Kiss , E. Kistenev , J. Klatsky , J. Klay , C. Klein-Boesing , D. Kleinjan , P. Kline , T. Koblesky , L. Kochenda , M. Kofarago , B. Komkov , M. Konno , J. Koster , D. Kotov , A. Kozlov , A. Král , A. Kravitz , G. J. Kunde , K. Kurita , M. Kurosawa , M. J. Kweon , Y. Kwon , G. S. Kyle , R. Lacey , Y. S. Lai , J. G. Lajoie , D. Layton , A. Lebedev , D. M. Lee , J. Lee , K. B. Lee , K. S. Lee , S. H. Lee , S. R. Lee , T. Lee , M. J. Leitch , M. A. L. Leite , M. Leitgab , B. Lenzi , X. Li , P. Lichtenwalner , P. Liebing , S. H. Lim , L. A. Linden Levy , T. Liška , A. Litvinenko , H. Liu , M. X. Liu , B. Love , D. Lynch , C. F. Maguire , Y. I. Makdisi , M. Makek , A. Malakhov , M. D. Malik , A. Manion , V. I. Manko , E. Mannel , Y. Mao , L. Mašek , H. Masui , F. Matathias , M. McCumber , P. L. McGaughey , D. McGlinchey , C. McKinney , N. Means , A. Meles , M. Mendoza , B. Meredith , Y. Miake , T. Mibe , A. C. Mignerey , P. Mikeš , K. Miki , A. J. Miller , A. Milov , D. K. Mishra , M. Mishra , J. T. Mitchell , Y. Miyachi , S. Miyasaka , S. Mizuno , A. K. Mohanty , P. Montuenga , H. J. Moon , T. Moon , Y. Morino , A. Morreale , D. P. Morrison , S. Motschwiller , T. V. Moukhanova , D. Mukhopadhyay , T. Murakami , J. Murata , A. Mwai , S. Nagamiya , J. L. Nagle , M. Naglis , M. I. Nagy , I. Nakagawa , H. Nakagomi , Y. Nakamiya , K. R. Nakamura , T. Nakamura , K. Nakano , S. Nam , C. Nattrass , P. K. Netrakanti , J. Newby , M. Nguyen , M. Nihashi , T. Niida , R. Nouicer , N. Novitzky , A. S. Nyanin , C. Oakley , E. O'Brien , S. X. Oda , C. A. Ogilvie , M. Oka , K. Okada , Y. Onuki , J. D. Orjuela Koop , A. Oskarsson , M. Ouchida , H. Ozaki , K. Ozawa , R. Pak , A. P. T. Palounek , V. Pantuev , V. Papavassiliou , B. H. Park , I. H. Park , J. Park , S. Park , S. K. Park , W. J. Park , S. F. Pate , L. Patel , M. Patel , H. Pei , J. -C. Peng , H. Pereira , D. V. Perepelitsa , G. D. N. Perera , V. Peresedov , D. Yu. Peressounko , J. Perry , R. Petti , C. Pinkenburg , R. Pinson , R. P. Pisani , M. Proissl , M. L. Purschke , A. K. Purwar , H. Qu , J. Rak , A. Rakotozafindrabe , I. Ravinovich , K. F. Read , S. Rembeczki , K. Reygers , D. Reynolds , V. Riabov , Y. Riabov , E. Richardson , N. Riveli , D. Roach , G. Roche , S. D. Rolnick , M. Rosati , C. A. Rosen , S. S. E. Rosendahl , P. Rosnet , Z. Rowan , J. G. Rubin , P. Rukoyatkin , P. Ružička , V. L. Rykov , B. Sahlmueller , N. Saito , T. Sakaguchi , S. Sakai , K. Sakashita , H. Sako , V. Samsonov , S. Sano , M. Sarsour , S. Sato , T. Sato , M. Savastio , S. Sawada , B. Schaefer , B. K. Schmoll , K. Sedgwick , J. Seele , R. Seidl , A. Yu. Semenov , V. Semenov , A. Sen , R. Seto , P. Sett , A. Sexton , D. Sharma , I. Shein , T. -A. Shibata , K. Shigaki , H. H. Shim , M. Shimomura , K. Shoji , P. Shukla , A. Sickles , C. L. Silva , D. Silvermyr , C. Silvestre , K. S. Sim , B. K. Singh , C. P. Singh , V. Singh , M. Slunečka , T. Sodre , A. Soldatov , R. A. Soltz , W. E. Sondheim , S. P. Sorensen , I. V. Sourikova , F. Staley , P. W. Stankus , E. Stenlund , M. Stepanov , A. Ster , S. P. Stoll , T. Sugitate , C. Suire , A. Sukhanov , T. Sumita , J. Sun , J. Sziklai , E. M. Takagui , A. Takahara , A. Taketani , R. Tanabe , Y. Tanaka , S. Taneja , K. Tanida , M. J. Tannenbaum , S. Tarafdar , A. Taranenko , P. Tarján , E. Tennant , H. Themann , D. Thomas , T. L. Thomas , A. Timilsina , T. Todoroki , M. Togawa , A. Toia , L. Tomášek , M. Tomášek , Y. Tomita , H. Torii , M. Towell , R. Towell , R. S. Towell , V-N. Tram , I. Tserruya , Y. Tsuchimoto , K. Utsunomiya , C. Vale , H. Valle , H. W. van Hecke , M. Vargyas , E. Vazquez-Zambrano , A. Veicht , J. Velkovska , R. Vértesi , A. A. Vinogradov , M. Virius , A. Vossen , V. Vrba , E. Vznuzdaev , X. R. Wang , D. Watanabe , K. Watanabe , Y. Watanabe , Y. S. Watanabe , F. Wei , R. Wei , J. Wessels , S. Whitaker , S. N. White , D. Winter , S. Wolin , C. L. Woody , R. M. Wright , M. Wysocki , B. Xia , W. Xie , L. Xue , S. Yalcin , Y. L. Yamaguchi , K. Yamaura , R. Yang , A. Yanovich , J. Ying , S. Yokkaichi , J. S. Yoo , I. Yoon , Z. You , G. R. Young , I. Younus , I. E. Yushmanov , W. A. Zajc , O. Zaudtke , A. Zelenski , C. Zhang , S. Zhou , L. Zolin

Probing the dark photon via polarized DIS scattering at the HERA and EIC

The dark photon is widely predicted in many new physics beyond the Standard Model. In this work, we propose to utilize the polarized lepton cross section in neutral current DIS process at the HERA and upcoming Electron-Ion Collider (EIC) to…

High Energy Physics - Phenomenology · Physics 2022-08-24 Bin Yan

Constraints on Dark Photon from Neutrino-Electron Scattering Experiments

A possible manifestation of an additional light gauge boson $A^\prime$, named as Dark Photon, associated with a group $U(1)_{\rm B-L}$ is studied in neutrino electron scattering experiments. The exclusion plot on the coupling constant…

High Energy Physics - Phenomenology · Physics 2015-08-26 S. Bilmis , I. Turan , T. M. Aliev , M. Deniz , L. Singh , H. T. Wong

Breaking up the Proton: An Affair with Dark Forces

Deep inelastic scattering of $e^{\pm}$ off protons is sensitive to contributions from "dark photon" exchange. Using HERA data fit to HERA's parton distribution functions, we obtain the model-independent bound $\epsilon \lesssim 0.02$ on the…

High Energy Physics - Phenomenology · Physics 2021-01-13 Graham D. Kribs , David McKeen , Nirmal Raj

Higher-order mean-field theory of chiral waveguide QED

Waveguide QED with cold atoms provides a potent platform for the study of non-equilibrium, many-body, and open-system quantum dynamics. Even with weak coupling and strong photon loss, the collective enhancement of light-atom interactions…

Quantum Physics · Physics 2023-07-19 Kasper J. Kusmierek , Sahand Mahmoodian , Martin Cordier , Jakob Hinney , Arno Rauschenbeutel , Max Schemmer , Philipp Schneeweiss , Jürgen Volz , Klemens Hammerer

Searching for dark photon dark matter from terrestrial magnetic fields

We present a novel search for dark photon dark matter (DM) using terrestrial magnetic field measurements at frequencies below 100 Hz. Coherently oscillating dark photon DM can induce a monochromatic magnetic field via kinetic mixing with…

High Energy Physics - Phenomenology · Physics 2026-05-12 Kimihiro Nomura , Atsushi Nishizawa , Atsushi Taruya , Yoshiaki Himemoto

(g-2)_mu and alpha(M_Z^2) re-evaluated using new precise data

We update our Standard Model predictions for g-2 of the muon and for the hadronic contributions to the running of the QED coupling, Delta alpha_had^(5)(M_Z^2). Particular emphasis is put on recent changes in the hadronic contributions from…

High Energy Physics - Phenomenology · Physics 2015-05-28 K. Hagiwara , R. Liao , A. D. Martin , Daisuke Nomura , T. Teubner

New predictions on the mass of the $1^{-+}$ light hybrid meson from QCD sum rules

We calculate the coefficients of the dimension-8 quark and gluon condensates in the current-current correlator of $1^{-+}$ light hybrid current $g\bar{q}(x)\gamma_{\nu}iG_{\mu\nu}(x)q{(x)}$. With inclusion of these higher-power corrections…

High Energy Physics - Phenomenology · Physics 2015-03-26 Zhuo-Ran Huang , Hong-Ying Jin , Zhu-Feng Zhang

Cosmological bounds on dark matter-photon coupling

We investigate an extension of the $\Lambda$CDM model where the dark matter (DM) is coupled to photons, inducing a nonconservation of the numbers of particles for both species, where the DM particles are allowed to dilute throughout the…

Cosmology and Nongalactic Astrophysics · Physics 2018-08-21 Suresh Kumar , Rafael C. Nunes , Santosh Kumar Yadav

Dark Matter implications of DAMA/LIBRA-phase2 results

Recently, the DAMA/LIBRA collaboration released updated results from their search for the annual modulation signal from Dark Matter (DM) scattering in the detector. Besides approximately doubling the exposure of the DAMA/LIBRA data set, the…

Cosmology and Nongalactic Astrophysics · Physics 2019-01-03 Sebastian Baum , Katherine Freese , Chris Kelso

Observational constraints on G-corrected holographic dark energy using a Markov chain Monte Carlo method

We constrain holographic dark energy (HDE) with time varying gravitational coupling constant in the framework of the modified Friedmann equations using cosmological data from type Ia supernovae, baryon acoustic oscillations, cosmic…

Cosmology and Nongalactic Astrophysics · Physics 2014-03-05 Hamzeh Alavirad , Mohammad Malekjani

Combination and QCD analysis of charm and beauty production cross-section measurements in deep inelastic $ep$ scattering at HERA

Measurements of open charm and beauty production cross sections in deep inelastic $ep$ scattering at HERA from the H1 and ZEUS Collaborations are combined. Reduced cross sections are obtained in the kinematic range of negative four-momentum…

High Energy Physics - Experiment · Physics 2018-04-04 H1 , ZEUS collaborations

Semi-visible dark photon in a model with vector-like leptons for the $(g-2)_{e,\mu}$ and $W$-boson mass anomalies

We propose a model realizes that a semi-visible dark photon which can contribute to the anomalous magnetic moment ($g-2$) of both electron and muon. In this model, the electron $g-2$ is deviated from the Standard Model (SM) prediction by…

High Energy Physics - Phenomenology · Physics 2024-02-02 Waleed Abdallah , Mustafa Ashry , Junichiro Kawamura , Ahmad Moursy

Constraints on the dark photon from parity violation and the $W$ mass

We present an analysis of the experimental data for parity-violating electron scattering (PVES) and atomic parity-violation, including the effects of a dark photon. We derive the favored region of dark photon parameter space, which provides…

High Energy Physics - Phenomenology · Physics 2022-09-26 A. W. Thomas , X. G. Wang

Analysis of Electroweak Precision Data and Prospects for Future Improvements

We update our previous work on an analysis of the electroweak data by including new and partly preliminary data available up to the 1996 summer conferences. The new results on the Z partial decay widths into b and c hadrons now offer a…

High Energy Physics - Phenomenology · Physics 2008-11-26 Kaoru Hagiwara , Dieter Haidt , Seiji Matsumoto

Do WMAP5 data favor neutrino mass and a coupling between Cold Dark Matter and Dark Energy?

We fit WMAP5 and related data by allowing for a CDM--DE coupling and non--zero neutrino masses, simultaneously. We find a significant correlation between these parameters, so that simultaneous higher coupling and \nu--masses are allowed.…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 S. A. Bonometto , G. La Vacca , J. R. Kristiansen , R. Mainini , L. P. L. Colombo

New limits on intrinsic charm in the nucleon from global analysis of parton distributions

We present a new global QCD analysis of parton distribution functions, allowing for possible intrinsic charm (IC) contributions in the nucleon inspired by light-front models. The analysis makes use of the full range of available high-energy…

High Energy Physics - Phenomenology · Physics 2015-03-05 P. Jimenez-Delgado , T. J. Hobbs , J. T. Londergan , W. Melnitchouk