The Forward Physics Facility: Sites, experiments, and physics potential

Anchordoqui, Luis A.; Ariga, A.; Ariga, T.; Bai, Weidong; Balazs, Kincso; Batell, Brian; Boyd, J.; Bramante, Joseph; Campanelli, M.; Carmona, Adrián; Celiberto, Francesco Giovanni; Chachamis, Grigorios; Citron, M.; Lellis, G. De; Roeck, A. De; Dembinski, H.-P.; Denton, Peter B.; Crecsenzo, Antonia Di; Diwan, M. V.; Dougherty, L.A.; Dreiner, Herbi K.; Du, Yong; Enberg, Rikard; Farzan, Yasaman; Feng, Jonathan L.; Fieg, Max; Foldenauer, Patrick; Foroughi-Abari, Saeid; Friedland, Alexander; Fucilla, Michael; Gall, J.; Garzelli, Maria Vittoria; Giuli, F.; Gonçalves, V. P.; Guzzi, Marco; Halzen, F.; Helo, Juan Carlos; Hill, C.; Ismail, Ahmed; Ismail, Ameen; Jacobsson, R.; Jana, Sudip; Jeong, Yu Seon; Jodłowski, Krzysztof; Kelly, Kevin J.; Kling, Felix; Kumar, Fnu Karan; Liu, Zhen; Maciuła, Rafał; Abraham, Roshan Mammen; Manshanden, Julien; Mcfayden, J. A.; Mohammed, Mohammed; Nadolsky, Pavel; Okada, Nobuchika; Osborne, John A.; Otono, H.; Pandey, V.; Papa, Alessandro; Raut, Digesh; Reno, Mary Hall; Resnati, F.; Ritz, Adam; Rojo, Juan; Sarčević, Ina; Scherb, Christiane; Schulz, H.; Schwaller, Pedro; Sengupta, Dipan; Sjöstrand, Torbjörn; Smith, Tyler B.; Soldin, D.; Staśto, Anna; Szczurek, Antoni; Tabrizi, Zahra; Trojanowski, Sebastian; Tsai, Yu-Dai; Tuckler, Douglas; Winkler, Martin Wolfgang; Xie, Keping; Zhang, Yue

doi:10.1016/j.physrep.2022.04.004

Cited by 100 publications

(77 citation statements)

References 311 publications

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“…The stabilization mechanism is encoded in the peculiar behavior of the heavy-hadron gluon FF, and it comes out as a general feature shared by all the heavyflavored species investigated so far, heavy-light hadrons [63,64], vector quarkonia [67], and now ( * ) mesons. We believe that the favorable statistics of our cross sections motivates further analyses on the high-energy spectrum of QCD via heavy flavor at the (high-luminosity) LHC [82,83] and in ultra-forward directions of rapidity, as the ones accessible at the forthcoming Forward Physics Facility (FPF) [84][85][86]. Our plan for future extensions of studies presented in this Letter is twofold.…”

Section: Discussionmentioning

confidence: 88%

The high-energy spectrum of QCD from inclusive emissions of charmed $B$-mesons

Celiberto

2022

Preprint

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We investigate the high-energy behavior of strong interactions through a study on the inclusive hadroproduction of charmed -mesons ( or * states) accompanied by non-charmed -hadron or light-flavored jet emissions at LHC energies and kinematic configurations. By making use of the hybrid high-energy and collinear factorization, where the standard fixed-order description based on collinear parton densities and fragmentation functions is enhanced via the Balitsky-Fadin-Kuraev-Lipatov (BFKL) resummation of energy logarithms, we perform a full next-to-leading order analysis of distributions differential in rapidities and azimuthal angles calculated by the hands of the JETHAD multi-modular working package. The large observed transverse momenta justify the use of nonrelativistic QCD next-to-leading order fragmentation functions to describe the heavy-flavored meson production mechanism. We come out with the conclusion that the study of this process can be included in forthcoming analyses at the (high-luminosity) LHC as a tool to access the QCD dynamics at high energies and to explore possible common ground between different resummation approaches.

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Section: Discussionmentioning

confidence: 88%

The high-energy spectrum of QCD from inclusive emissions of charmed $B$-mesons

Celiberto

2022

Preprint

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“…The full calculation of the leading-twist f -type T -odd TMDs, such as the Sivers function is underway. They can be used as a useful guidance to unveil the gluon-TMD dynamics at newgeneration colliding facilities, such as the Electron-Ion Collider (EIC) [58], NICA-SPD [59], the High-Luminosity Large Hadron Collider (HL-LHC) [60], and the Forward Physics Facility (FPF) [61,62].…”

Section: Discussionmentioning

confidence: 99%

Unveiling the proton structure via transverse-momentum-dependent gluon distributions

Bacchetta

Celiberto²,

Radici³

2022

Supl. Rev. Mex. Fis.

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We present exploratory studies of the proton content via unpolarized and polarized transverse-momentum-dependent gluon distributions in the proton at leading twist. We make use of an enhanced spectator-model approach to encode in our densities both small- and moderate-$x$ effects. These studies are relevant to the investigation of the inner structure of hadrons via tomographic analyses at new-generation colliding machines.

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“…of hosting a suite of far-forward experiments active during the HL-LHC phase, has been recently raised, gaining increasing attention [11]. First studies in this direction are ongoing, considering the options of either enhancing the dimensions of one of the two aforementioned tunnels by enlarging it with alcoves, or building a new bigger cavern and access tunnel at approximately ∼ 500-600 m from the ATLAS IP [12].…”

Section: Jhep06(2022)148mentioning

confidence: 99%

Parton distribution function uncertainties in theoretical predictions for far-forward tau neutrinos at the Large Hadron Collider

Bai

Diwan

Garzelli

et al. 2022

J. High Energ. Phys.

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New experiments dealing with neutrinos in the far-forward region at the Large Hadron Collider (LHC) are under design or already in preparation. Two of them, FASERν and SND@LHC, are expected to be active during Run 3 and have the potential to detect the interactions of ν and $$ \overline{\nu} $$ ν ¯ that come from high-energy collisions in one of the LHC interaction points, extracted along the direction tangent to the beam line. Tau neutrinos and antineutrinos come predominantly from $$ {D}_s^{\pm } $$ D s ± production in pp collisions, followed by the leptonic decay of these mesons. Neutrino pseudorapidities in the range of η > 6.9 and η > 8.9 are relevant to these future experiments. At such pseudorapidities at high energies, QCD theoretical predictions for the flux of ντ plus $$ \overline{\nu} $$ ν ¯ τ rely on parton distribution functions (PDFs) in a combination of very small and large parton−x values. We evaluate PDF un certainties affecting the flux of ντ + $$ \overline{\nu} $$ ν ¯ τ produced by $$ {D}_s^{\pm } $$ D s ± decay in the far forward region at the LHC. Next-to-leading order (NLO) QCD uncertainties are included in the calculation of $$ {D}_s^{\pm } $$ D s ± production and NLO PDF sets are used for consistency. The theoretical uncertainty associated with the 40 PDF sets of the PROSA19 group amounts to ±(20 − 30)% for the (ντ + $$ \overline{\nu} $$ ν ¯ τ) number of charged-current (CC) events. Scale uncertainties are much larger, resulting in a range of CC event predictions from ~70% lower to ~90% higher than the central prediction. A comparison of the predictions with those obtained using as input the central PDFs from the 3-flavour NLO PDF sets of the CT14, ABMP16 and NNPDF3.1 collaborations show that far-forward neutrino energy distributions vary by as much as a factor of ~2 – 4 relative to the PROSA19 predictions at TeV neutrino energies. The Forward Physics Facility in the high luminosity LHC era will provide data capable of constraining NLO QCD evaluations with these PDF sets.

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The Forward Physics Facility: Sites, experiments, and physics potential

Cited by 100 publications

References 311 publications

The high-energy spectrum of QCD from inclusive emissions of charmed $B$-mesons

The high-energy spectrum of QCD from inclusive emissions of charmed $B$-mesons

Unveiling the proton structure via transverse-momentum-dependent gluon distributions

Parton distribution function uncertainties in theoretical predictions for far-forward tau neutrinos at the Large Hadron Collider

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