Measurement of inclusive $$\varvec{ep}$$ e p cross sections at high $${\varvec{Q}^{2}}$$ Q 2 at $$\varvec{\sqrt{s}}=225$$ s = 225 and 252 GeV and of the longitudinal proton structure function $${\varvec{F}_{\varvec{L}}}$$ F L at HERA

Andreev, V.; Baghdasaryan, A.; Baghdasaryan, S.; Begzsuren, K.; Belousov, A.; Belov, Pavel A.; Boudry, V.; Bradt, G.; Brinkmann, Martin; Brisson, V.; Britzger, D.; Buniatyan, A.; Bylinkin, A.; Bystritskaya, L.; Campbell, A. J.; Avila, K. B. Cantun; Ceccopieri, Federico Alberto; C̆erný, K.; Chekelian, V.; Contreras, J. G.; Dainton, J. B.; Daum, K.; Wolf, E. A. De; Diaconu, C.; Dobre, M.; Dodonov, V.; Dossanov, A.; Dubak, A.; Eckerlin, G.; Egli, S.; Elsen, E.; Favart, L.; Fedotov, A.; Feltesse, J.; Ferencei, J.; Fleischer, M.; Fomenko, A.; Gabathuler, E.; Gayler, J.; Ghazaryan, S.; Glazov, A.; Goerlich, L.; Gogitidze, N.; Gouzevitch, M.; Grab, C.; Grebenyuk, A.; Greenshaw, T.; Grindhammer, G.; Habib, S.; Haidt, D.; Henderson, R. C. W.; Herbst, M.; Hildebrandt, M.; Hladký, J.; Hoffmann, D.; Horisberger, R.; Hreus, T.; Huber, Florian; Jacquet, M.; Janssen, X.; Jung, A. W.; Jung, H.; Kapichine, M.; Kiesling, C.; Klein, Matthew Henry; Kleinwort, C.; Kogler, R.; Kostka, P.; Kretzschmar, J.; Krüger, K.; Landon, M. P. J.; Lange, W.; Laycock, P.; Lebedev, A.; Levonian, S.; Lipka, K.; List, B.; List, Jenny; Łobodziński, B.; Lubimov, V.; Malinovski, E.; Martyn, H. U.; Maxfield, S. J.; Mehta, A.; Meyer, Andreas Bernhard; Meyer, H.; Meyer, J.; Mikocki, S.; Morozov, A.; Müller, K.; Naumann, T.; Newman, P. R.; Niebuhr, C.; Nowak, G.; Nowak, K.; Olivier, B.; Olsson, J. E.; Ozerov, D.; Pahl, P.; Pascaud, C.; Patel, G. D.; Perez, E.; Petrukhin, A.; Pićurić, I.; Pirumov, H.; Pitzl, D.; Plačakytė, R.; Pokorny, B.; Polifka, R.; Radescu, V.; Raičević, N.; Raspereza, A.; Ravdandorj, T.; Reimer, P.; Rizvi, E.; Robmann, P.; Roosen, R.; Rostovtsev, A.; Rotaru, M.; Rusakov, S. V.; Šálek, D.; Sankey, D. P. C.; Sauter, M.; Sauvan, E.; Schmitt, S.; Schoeffel, L.; Schöning, A.; Schultz‐Coulon, H.‐C.; Sefkow, F.; Shushkevich, S.; Soloviev, Y.; Sopicki, P.; South, D.; Spaskov, V.; Specka, A.; Steder, M.; Stella, B.; Straumann, U.; Sýkora, T.; Thompson, P. D.; Traynor, D.; Truöl, P.; Tsakov, I.; Tseepeldorj, B.; Turnau, J.; Valkárová, A.; Vallée, C.; Mechelen, P. Van; Vazdik, Y.; Wegener, D.; Wünsch, E.; Žáček, J.; Zhang, Zhiqing Philippe; Žlebčík, R.; Zohrabyan, H.; Zomer, F.

doi:10.1140/epjc/s10052-014-2814-6

Cited by 97 publications

(71 citation statements)

References 101 publications

Supporting

Mentioning

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Order By: Relevance

“…The structure function F L in the denominator contains contributions involving powers of the strong coupling constant α S at an order that goes beyond the level reached in this analysis; hence, it will be consistently neglected (for measurements and estimates of the F L structure function see, e.g., refs. [28,29] and references therein).…”

Section: ) Wherementioning

confidence: 99%

Extraction of partonic transverse momentum distributions from semi-inclusive deep-inelastic scattering, Drell-Yan and Z-boson production

Bacchetta

Delcarro

Pisano

et al. 2017

J. High Energ. Phys.

217

239

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We present an extraction of unpolarized partonic transverse momentum distributions (TMDs) from a simultaneous fit of available data measured in semi-inclusive deep-inelastic scattering, Drell-Yan and Z boson production. To connect data at different scales, we use TMD evolution at next-to-leading logarithmic accuracy. The analysis is restricted to the low-transverse-momentum region, with no matching to fixed-order calculations at high transverse momentum. We introduce specific choices to deal with TMD evolution at low scales, of the order of 1 GeV 2 . This could be considered as a first attempt at a global fit of TMDs.

show abstract

Section: ) Wherementioning

confidence: 99%

Extraction of partonic transverse momentum distributions from semi-inclusive deep-inelastic scattering, Drell-Yan and Z-boson production

Bacchetta

Delcarro

Pisano

et al. 2017

J. High Energ. Phys.

217

239

View full text Add to dashboard Cite

show abstract

“…These lower-energy measurements are the same ones used to determine the longitudinal structure function F L . Therefore, we exclude the previously used F L [25] data from the present fit to avoid any double counting, and for the same reason we do not include any other of the updated F L extractions at HERA [84,85]. For completeness, in NNPDF3.0 Table 1.…”

Section: New Experimental Data In Nnpdf30mentioning

confidence: 99%

Parton distributions for the LHC run II

Ball

Bertone

Carrazza

et al. 2015

J. High Energ. Phys.

2,002

1,814

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We present NNPDF3.0, the first set of parton distribution functions (PDFs) determined with a methodology validated by a closure test. NNPDF3.0 uses a global dataset including HERA-II deep-inelastic inclusive cross-sections, the combined HERA charm data, jet production from ATLAS and CMS, vector boson rapidity and transverse momentum distributions from ATLAS, CMS and LHCb, W +c data from CMS and top quark pair production total cross sections from ATLAS and CMS. Results are based on LO, NLO and NNLO QCD theory and also include electroweak corrections. To validate our methodology, we show that PDFs determined from pseudo-data generated from a known underlying law correctly reproduce the statistical distributions expected on the basis of JHEP04(2015)040the assumed experimental uncertainties. This closure test ensures that our methodological uncertainties are negligible in comparison to the generic theoretical and experimental uncertainties of PDF determination. This enables us to determine with confidence PDFs at different perturbative orders and using a variety of experimental datasets ranging from HERA-only up to a global set including the latest LHC results, all using precisely the same validated methodology. We explore some of the phenomenological implications of our results for the upcoming 13 TeV Run of the LHC, in particular for Higgs production cross-sections.

show abstract

“…The predictions for F L obtained in our approach are shown in Fig. 6 in comparison to the experimental data from H1 [13]. The F L data are well described down to Q 2 = 1 GeV 2 .…”

Section: Comparison With the Data For σ Red And F Lmentioning

confidence: 64%

“…One of the key goals of the present analysis is to understand the impact of the higher-twist corrections on the parton The predictions for F L from the HTS fit compared to the H1 data [13]. Also shown are twist 2 (dashed green line) and twist 4 (dotted purple line) contributions density functions.…”

Section: Impact Of the Higher-twist Effects On The Pdfsmentioning

confidence: 99%

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Evidence of quasi-partonic higher-twist effects in deep inelastic scattering at HERA at moderate $$Q^2$$ Q 2

et al. 2018

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The combined HERA data for the inclusive deep inelastic scattering (DIS) cross sections for the momentum transfer Q 2 > 1 GeV 2 are fitted within the DokshitzerGribov-Lipatov-Altarelli-Parisi (DGLAP) framework at next-to-leading order (NLO) and next-to-next-to-leading order (NNLO) accuracy, complemented by a QCD-inspired parameterisation of twist 4 corrections. A modified form of the input parton density functions is also included, motivated by parton saturation mechanism at small Bjorken x and at a low scale. These modifications lead to a significant improvement of the data description in the region of low Q 2 . For the whole data sample, the new benchmark NNLO DGLAP fit yields χ 2 /d.o.f.1.19 to be compared to 1.46 resulting from the standard NNLO DGLAP fit. We discuss the results in the context of the parton saturation picture and describe the impact of the higher-twist corrections on the derived parton density functions. The resulting description of the longitudinal proton structure function F L is consistent with the HERA data. Our estimates of higher-twist contributions to the proton structure functions are comparable to the leading-twist contributions at low Q 2 2 GeV 2 and x 10 −5 . The xdependence of the twist 4 corrections obtained from the best fit is consistent with the leading twist 4 quasi-partonic operators, corresponding to an exchange of four interacting gluons in the t-channel.

show abstract

Measurement of inclusive $$\varvec{ep}$$ e p cross sections at high $${\varvec{Q}^{2}}$$ Q 2 at $$\varvec{\sqrt{s}}=225$$ s = 225 and 252 GeV and of the longitudinal proton structure function $${\varvec{F}_{\varvec{L}}}$$ F L at HERA

Cited by 97 publications

References 101 publications

Extraction of partonic transverse momentum distributions from semi-inclusive deep-inelastic scattering, Drell-Yan and Z-boson production

Extraction of partonic transverse momentum distributions from semi-inclusive deep-inelastic scattering, Drell-Yan and Z-boson production

Parton distributions for the LHC run II

Evidence of quasi-partonic higher-twist effects in deep inelastic scattering at HERA at moderate $$Q^2$$ Q 2

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