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This Letter presents the measurement of differential cross sections of isolated prompt photons produced in association with a b-jet or a c-jet. These final states provide sensitivity to the heavy-flavour content of the proton and aspects…

High Energy Physics - Experiment · Physics 2018-01-24 ATLAS Collaboration

We study the production of hadron pairs in proton-proton collisions, selecting pairs with large total transverse momentum with respect to the beam, and small relative transverse momentum, i.e., belonging to a single jet with large…

High Energy Physics - Phenomenology · Physics 2016-09-06 Alessandro Bacchetta , Marco Radici

We study the production of an isolated large p_T photon as well as the production of an isolated prompt photon plus a jet in e^+e^- collisions. Our results are obtained by a NLO Monte Carlo program of partonic event generator type. We…

High Energy Physics - Phenomenology · Physics 2011-09-13 M. Fontannaz , J. Ph. Guillet , G. Heinrich

Parton distribution functions are crucial to understand the internal kinematics of hadrons. There are currently a large number of distribution functions on the market, and thanks to today's technology, performing computational analysis of…

High Energy Physics - Phenomenology · Physics 2022-01-07 David F. Rentería-Estrada , Roger J. Hernández-Pinto , German F. R. Sborlini

By using the zero-phonon line emission of an individual organic molecule, we realized a source of indistinguishable single photons in the near infrared. A Hong-Ou-Mandel interference experiment is performed and a two-photon coalescence…

Quantum Physics · Physics 2015-05-20 Jean-Baptiste Trebbia , Philippe Tamarat , Brahim Lounis

We discuss fixed target and ISR inclusive photon production and attempt a comparison between theory and experiments. The dependence of the theoretical predictions on the structure functions, and on the renormalization and factorization…

High Energy Physics - Phenomenology · Physics 2011-09-13 P. Aurenche , M. Fontannaz , J. Ph. Guillet , B. Kniehl , E. Pilon , M. Werlen

We develop the analysis of diphoton exclusive photoproduction in the kinematics where a collinear QCD factorization framework applies, namely nearly forward large invariant mass diphoton production. We work at the leading twist level and at…

High Energy Physics - Phenomenology · Physics 2022-06-01 Oskar Grocholski , Bernard Pire , Paweł Sznajder , Lech Szymanowski , Jakub Wagner

We discuss the exclusive photoproduction of a photon-meson pair with large $ p_{T} $ as a channel to probe generalised parton distributions (GPDs). Like other $ 2\to3 $ exclusive processes, this channel allows us to better study the $ x…

High Energy Physics - Phenomenology · Physics 2024-03-15 Goran Duplančić , Saad Nabeebaccus , Kornelija Passek-K. , Bernard Pire , Jakob Schönleber , Lech Szymanowski , Samuel Wallon

We consider the production of prompt-photon pairs at the LHC and we report on a study of QCD radiative corrections up to the next-to-next-to-leading order (NNLO). We present a detailed comparison of next-to-leading order (NLO) results…

High Energy Physics - Phenomenology · Physics 2018-05-23 Stefano Catani , Leandro Cieri , Daniel de Florian , Giancarlo Ferrera , Massimiliano Grazzini

We calculate $O(\alpha_s)$ corrections to inclusive and isolated double prompt photon production, both for the unpolarized case, and for longitudinal polarization of the incoming hadrons. The calculation is performed using purely analytical…

High Energy Physics - Phenomenology · Physics 2014-11-17 Claudio Coriano' , Lionel E. Gordon

Using spontaneous parametric down conversion and a 50:50 beam splitter, we generate coaxial polarization-entangled photon pairs, of which the two photons are far separated from each other. The photons are then sent one by one through one…

Quantum Physics · Physics 2010-05-06 Xian-Min Jin , Cheng-Zhi Peng , Tao Yang , Youjin Deng

Holography exploits the interference of light fields to obtain a systematic reconstruction of the light fields wavefronts. Classical holography techniques have been very successful in diverse areas such as microscopy, manufacturing…

Prompt photons are a powerful tool to study heavy ion collisions. Their production rates provide access to the initial state parton distribution functions and also provide a means to calibrate the expected energy of jets that are produced…

High Energy Physics - Experiment · Physics 2019-08-21 Peter Steinberg

We study the expectations for prompt photon production rates at HERA in a fully consistent next-to-leading order (NLO) QCD analysis, taking into account the effects of experimental isolation requirements. In particular we examine the…

High Energy Physics - Phenomenology · Physics 2007-05-23 L. E. Gordon , W. Vogelsang

We study the nuclear dependences of high-$p_T$ jet cross sections in one photon and one jet production in proton-nucleus collisions. We find that there exist asymmetries between the outgoing jets and photons. A convincing reason responsible…

High Energy Physics - Phenomenology · Physics 2009-10-31 Hong Shen , Ma Luo

We calculate isolated photon production at forward rapidities in proton-nucleus collisions in the Color Glass Condensate framework. Our calculation uses dipole cross sections solved from the running coupling Balitsky-Kovchegov equation with…

High Energy Physics - Phenomenology · Physics 2019-02-20 B. Ducloué , T. Lappi , H. Mäntysaari

The dynamics of isolated-photon plus jet production in pp collisions at a centre-of-mass energy of 7 TeV has been studied with the ATLAS detector at the LHC using an integrated luminosity of 37 pb-1. Measurements of isolated-photon plus jet…

High Energy Physics - Experiment · Physics 2014-05-08 ATLAS Collaboration

High visibility on-chip quantum interference among indistinguishable single-photons from multiples sources is a key prerequisite for integrated linear optical quantum computing. Resonant enhancement in micro-ring resonators naturally…

Quantum Physics · Physics 2018-08-08 Imad I. Faruque , Gary F. Sinclair , Damien Bonneau , John G. Rarity , Mark G. Thompson

Photon statistics in a weakly driven optomechanical photonic crystal cavity, with Kerr-type nonlinearity, is analyzed both analytically and numerically. Single-photon blockade effect is demonstrated via calculations of the zero-time-delay…

Optics · Physics 2016-12-23 Bijita Sarma , Amarendra K. Sarma

Photons are ideal carriers of quantum information, as they can be easily created and can travel long distances without being affected by decoherence. For this reason, they are well suited for quantum communication. However, the interaction…