Exclusive diffractive bremsstrahlung of one and two photons at forward rapidities: possibilities for experimental studies in pp collisions at the LHC
We evaluate the cross section for diffractive bremsstrahlung of a single photon in the pp→ppγ reaction at high energies and at forward photon rapidities. Several differential distributions, for instance, in y, k⊥ and ω, the rapidity, the absolute value of the transverse momentum, and the energy of t...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article (Journal) |
| Language: | English |
| Published: |
10 August 2023
|
| In: |
Physics letters
Year: 2023, Volume: 843, Pages: 1-9 |
| ISSN: | 1873-2445 |
| DOI: | 10.1016/j.physletb.2023.138053 |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.1016/j.physletb.2023.138053 Verlag, kostenfrei, Volltext: https://www.sciencedirect.com/science/article/pii/S0370269323003878 
|
| Author Notes: | Piotr Lebiedowicz, Otto Nachtmann, Antoni Szczurek |
MARC
| LEADER | 00000caa a2200000 c 4500 | ||
|---|---|---|---|
| 001 | 1869695518 | ||
| 003 | DE-627 | ||
| 005 | 20240307042939.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231108s2023 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1016/j.physletb.2023.138053 |2 doi | |
| 035 | |a (DE-627)1869695518 | ||
| 035 | |a (DE-599)KXP1869695518 | ||
| 035 | |a (OCoLC)1425209755 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rda | ||
| 041 | |a eng | ||
| 084 | |a 29 |2 sdnb | ||
| 100 | 1 | |a Lebiedowicz, Piotr |e VerfasserIn |0 (DE-588)1155970756 |0 (DE-627)101852407X |0 (DE-576)501969187 |4 aut | |
| 245 | 1 | 0 | |a Exclusive diffractive bremsstrahlung of one and two photons at forward rapidities |b possibilities for experimental studies in pp collisions at the LHC |c Piotr Lebiedowicz, Otto Nachtmann, Antoni Szczurek |
| 264 | 1 | |c 10 August 2023 | |
| 300 | |b Illustrationen | ||
| 300 | |a 9 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Online verfügbar: 3. Juli 2023, Artikelversion: 5. Juli 2023 | ||
| 500 | |a Gesehen am 08.11.2023 | ||
| 520 | |a We evaluate the cross section for diffractive bremsstrahlung of a single photon in the pp→ppγ reaction at high energies and at forward photon rapidities. Several differential distributions, for instance, in y, k⊥ and ω, the rapidity, the absolute value of the transverse momentum, and the energy of the photon, respectively, are presented. We compare the results for our standard approach, based on QFT and the tensor-pomeron model, with two versions of soft-photon-approximations, SPA1 and SPA2, where the radiative amplitudes contain only the leading terms proportional to ω−1. The SPA1, which does not have the correct energy-momentum relations, performs surprisingly well in the kinematic range considered. We discuss also azimuthal correlations between outgoing particles. The azimuthal distributions are not isotropic and are different for our standard model and SPAs. We discuss also the possibility of a measurement of two-photon-bremsstrahlung in the pp→ppγγ reaction. In our calculations we impose a cut on the relative energy loss (0.02<ξi<0.1, i=1,2) of the protons where measurements by the ATLAS Forward Proton (AFP) detectors are possible. The AFP requirement for both diffractively scattered protons and one forward photon (measured at LHCf) reduces the cross section for pp→ppγ almost to zero. On the other hand, much less cross-section reduction occurs for pp→ppγγ when photons are emitted in opposite sides of the ATLAS interaction point and can be measured by two different arms of LHCf. For the SPA1 ansatz we find σ(pp→ppγγ)≃0.03 nb at s=13 TeV and with the cuts 0.02<ξi<0.1, 8.5<y3<9, −9<y4<−8.5. Our predictions can be verified by ATLAS and LHCf combined experiments. We discuss also the role of the pp→ppπ0 background for single photon production. | ||
| 700 | 1 | |a Nachtmann, Otto |d 1942- |e VerfasserIn |0 (DE-588)1063321131 |0 (DE-627)811566234 |0 (DE-576)421841877 |4 aut | |
| 700 | 1 | |a Szczurek, Antoni |e VerfasserIn |0 (DE-588)1155970969 |0 (DE-627)101852438X |0 (DE-576)501969128 |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Physics letters |d Amsterdam : North-Holland Publ., 1967 |g 843(2023) vom: Aug., Artikel-ID 138053, Seite 1-9 |h Online-Ressource |w (DE-627)266015360 |w (DE-600)1466612-1 |w (DE-576)07495993X |x 1873-2445 |7 nnas |a Exclusive diffractive bremsstrahlung of one and two photons at forward rapidities possibilities for experimental studies in pp collisions at the LHC |
| 773 | 1 | 8 | |g volume:843 |g year:2023 |g month:08 |g elocationid:138053 |g pages:1-9 |g extent:9 |a Exclusive diffractive bremsstrahlung of one and two photons at forward rapidities possibilities for experimental studies in pp collisions at the LHC |
| 856 | 4 | 0 | |u https://doi.org/10.1016/j.physletb.2023.138053 |x Verlag |x Resolving-System |z kostenfrei |3 Volltext |
| 856 | 4 | 0 | |u https://www.sciencedirect.com/science/article/pii/S0370269323003878 |x Verlag |z kostenfrei |3 Volltext |
| 951 | |a AR | ||
| 992 | |a 20231108 | ||
| 993 | |a Article | ||
| 994 | |a 2023 | ||
| 998 | |g 1063321131 |a Nachtmann, Otto |m 1063321131:Nachtmann, Otto |d 130000 |d 130300 |e 130000PN1063321131 |e 130300PN1063321131 |k 0/130000/ |k 1/130000/130300/ |p 2 | ||
| 999 | |a KXP-PPN1869695518 |e 4404127898 | ||
| BIB | |a Y | ||
| SER | |a journal | ||
| JSO | |a {"person":[{"roleDisplay":"VerfasserIn","display":"Lebiedowicz, Piotr","role":"aut","family":"Lebiedowicz","given":"Piotr"},{"role":"aut","roleDisplay":"VerfasserIn","display":"Nachtmann, Otto","given":"Otto","family":"Nachtmann"},{"display":"Szczurek, Antoni","roleDisplay":"VerfasserIn","role":"aut","family":"Szczurek","given":"Antoni"}],"title":[{"subtitle":"possibilities for experimental studies in pp collisions at the LHC","title":"Exclusive diffractive bremsstrahlung of one and two photons at forward rapidities","title_sort":"Exclusive diffractive bremsstrahlung of one and two photons at forward rapidities"}],"language":["eng"],"recId":"1869695518","type":{"media":"Online-Ressource","bibl":"article-journal"},"note":["Online verfügbar: 3. Juli 2023, Artikelversion: 5. Juli 2023","Gesehen am 08.11.2023"],"name":{"displayForm":["Piotr Lebiedowicz, Otto Nachtmann, Antoni Szczurek"]},"id":{"eki":["1869695518"],"doi":["10.1016/j.physletb.2023.138053"]},"origin":[{"dateIssuedDisp":"10 August 2023","dateIssuedKey":"2023"}],"relHost":[{"pubHistory":["24.1967 - 727.2013; Vol. 728.2014 -"],"titleAlt":[{"title":"Physics letters / B"}],"part":{"text":"843(2023) vom: Aug., Artikel-ID 138053, Seite 1-9","volume":"843","extent":"9","year":"2023","pages":"1-9"},"note":["Gesehen am 24.06.24","Fortsetzung der Druck-Ausgabe","Ab 2014 mit durchgehender Heftzählung, die als Vol. bez. wird"],"disp":"Exclusive diffractive bremsstrahlung of one and two photons at forward rapidities possibilities for experimental studies in pp collisions at the LHCPhysics letters","type":{"bibl":"periodical","media":"Online-Ressource"},"recId":"266015360","language":["eng"],"title":[{"title":"Physics letters","title_sort":"Physics letters"}],"physDesc":[{"extent":"Online-Ressource"}],"origin":[{"dateIssuedKey":"1967","publisher":"North-Holland Publ.","dateIssuedDisp":"1967-","publisherPlace":"Amsterdam"}],"id":{"issn":["1873-2445"],"eki":["266015360"],"zdb":["1466612-1"]}}],"physDesc":[{"noteIll":"Illustrationen","extent":"9 S."}]} | ||
| SRT | |a LEBIEDOWICEXCLUSIVED1020 | ||