Combination of differential D∗± cross-section measurements in deep-inelastic ep scattering at HERA

Abramowicz, H.; Abt, I.; Adamczyk, L.; Adamus, M.; Andreev, V.; Antonelli, S.; Aushev, V.; Aushev, Y.; Baghdasaryan, A.; Begzsuren, K.; Behnke, O.; Behrens, U.; Belousov, A.; Bertolin, A.; Bloch, I.; Boos, E.G.; Borras, K.; Boudry, V.; Brandt, G.; Brisson, V.; Britzger, D.; Brock, I.; Brook, N. H.; Brugnera, R.; Bruni, A.; Buniatyan, A.; Bussey, P.; Bylinkin, A.; Bystritskaya, L.; Caldwell, A.; Campbell, A. J.; Avila, K. B. Cantun; Capua, M.; Catterall, C. D.; Ceccopieri, Federico Alberto; C̆erný, K.; Chekelian, V.; Chwastowski, J. J.; Ciborowski, J.; Ciesielski, R.; Contreras, J. G.; Cooper-Sarkar, A. M.; Corradi, M.; Corriveau, F.; Cvach, J.; Dainton, J. B.; Daum, K.; Dementiev, R. K.; Devenish, R. C. E.; Diaconu, C.; Dobre, M.; Dodonov, V.; Dolinska, G.; Dusini, S.; Eckerlin, G.; Egli, S.; Elsen, E.; Favart, L.; Fedotov, A.; Feltesse, J.; Ferencei, J.; Figiel, J.; Fleischer, M.; Fomenko, A.; Foster, B.; Gabathuler, E.; Gach, G. P.; Gallo, E.; Garfagnini, A.; Gayler, J.; Geiser, A.; Ghazaryan, S.; Gizhko, A.; Gladilin, L. K.; Goerlich, L.; Gogitidze, N.; Golubkov, Yu. A.; Gouzevitch, M.; Grab, C.; Grebenyuk, A.; Grebenyuk, J.; Greenshaw, T.; Gregor, I. M.; Grindhammer, G.; Grzelak, G.; Gueta, O.; Guzik, M. P.; Haidt, D.; Hain, W.; Henderson, R. C. W.; Hladký, J.; Hochman, D.; Hoffmann, D.; Hori, R.; Horisberger, R.; Hreus, T.; Huber, Florian; Ibrahim, Z. A.; Iga, Y.; Ishitsuka, M.; Iudin, A.; Jacquet, M.; Janssen, X.; Januschek, F.; Jomhari, N. Z.; Jung, A. W.; Jung, H.; Каденко, І.; Kananov, S.; Kapichine, M.; Karshon, U.; Kaur, M.; Kaur, P.; Kiesling, C.; Kisielewska, D.; Klanner, R.; Klein, M.; Klein, U.; Kleinwort, C.; Kogler, R.; Kondrashova, N.; Kononenko, O.; Korol, Ie.; Korzhavina, I. A.; Kostka, P.; Kotański, A.; Kötz, U.; Kovalchuk, N.; Kowalski, H.; Kretzschmar, J.; Krüger, K.; Krupa, B.; Kuprash, O.; Kuze, M.; Landon, M. P. J.; Lange, W.; Laycock, P.; Lebedev, A.; Levchenko, B. B.; Levonian, S.; Levy, A.; Libov, V.; Limentani, S.; Lipka, K.; Lisovyi, M.; List, B.; List, Jenny; Lobodzinska, E.; Łobodziński, B.; Löhr, B.; Lohrmann, E.; Longhin, A.; Lontkovskyi, D.; Lukina, O. Yu.; Makarenko, I.; Malinovski, E.; Malka, J.; Martyn, H. U.; Maxfield, S. J.; Mehta, A.; Mergelmeyer, S.; Meyer, Andreas Bernhard; Meyer, H.; Meyer, J.; Mikocki, S.; Idris, F. Mohamad; Morozov, A.; Nasir, N. Muhammad; Müller, K.; Myronenko, V.; Nagano, K.; Naumann, T.; Newman, P. R.; Niebuhr, C.; Nobe, T.; Notz, D.; Nowak, G.; Nowak, R. J.; Olsson, J. E.; Onishchuk, Y.; Ozerov, D.; Pahl, P.; Pascaud, C.; Patel, G. D.; Paul, E.; Pérez, E.; Perlański, W.; Petrukhin, A.; Pićurić, I.; Pirumov, H.; Pitzl, D.; Plačakytė, R.; Pokorny, B.; Pokrovskiy, N. S.; Polifka, R.; Przybycień, M.; Radescu, V.; Raičević, N.; Ravdandorj, T.; Reimer, P.; Rizvi, E.; Robmann, P.; Roloff, Philipp; Roosen, R.; Rostovtsev, A.; Rotaru, M.; Rubinsky, I.; Rusakov, S. V.; Ruspa, M.; Šálek, D.; Sankey, D. P. C.; Sauter, M.; Sauvan, E.; Saxon, D. H.; Schioppa, M.; Schmidke, W. B.; Schmitt, S.; Schneekloth, U.; Schoeffel, L.; Schöning, A.; Schörner-Sadenius, T.; Sefkow, F.; Shcheglova, L.M.; Shevchenko, R.; Shkola, O.; Shushkevich, S.; Shyrma, Yu.O.; Singh, Inderpal; Skillicorn, I. O.; Słomiński, W.; Solano, A.; Soloviev, Y.; Sopicki, P.; South, D.; Spaskov, V.; Specka, A.; Stančo, L.; Steder, M.; Stefaniuk, N.; Stern, A.; Stopa, P.; Straumann, U.; Sýkora, T.; Sztuk-Dambietz, J.; Szuba, D.; Szuba, J.; Tassi, E.; Thompson, P. D.; Tokushuku, K.; Tomaszewska, J.; Traynor, D.; Trofymov, A.; Truöl, P.; Tsakov, I.; Tseepeldorj, B.; Tsurugai, T.; Turcato, M.; Turkot, O.; Turnau, J.; Tymieniecka, T.; Valkárová, A.; Vallée, C.; Mechelen, P. Van; Vazdik, Y.; Verbytskyi, A.; Viazlo, O.; Walczak, R.; Abdullah, Wan Ahmad Tajuddin Wan; Wegener, D.; Wichmann, K.; Wing, M.; Wolf, G.; Wünsch, E.; Yamada, S.; Yamazaki, Y.; Žáček, J.; Zakharchuk, N.; Żarnecki, A. F.; Zawiejski, L.; Zenaiev, O.; Zhang, Z.; Zhautykov, B.O.; Zhmak, N.; Žlebčík, R.; Zohrabyan, H.; Zomer, F.; Zotkin, D.S.

doi:10.1007/jhep09(2015)149

Cited by 5 publications

(11 citation statements)

References 64 publications

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“…The generic electron-proton 5 scattering process, ep → l X , where l is the scattered lepton and X is the hadronic final state, is shown in Fig. 3.…”

Section: Kinematics Of Ep Collisions and Heavy-flavour Structure Funcmentioning

confidence: 99%

“…5.4.1; -l XY < 1.5 cm, to ensure that selected secondary vertices were inside the beampipe, thus did not originate from interactions with the beampipe or detector material; 35 GeV, to further reduce combinatorial background while still keeping the detector acceptance at a reasonable level at low p T (D + ); -|η(K , π)| < 1.75, to ensure the selection of wellreconstructed daughter tracks; -each track should have at least two MVD hits in both the Z and the φ directions and pass through at least three CTD superlayers, to improve further the quality of the daughter tracks;…”

Section: Selection Of D + Candidatesmentioning

confidence: 99%

“…All measurements to be combined for the single-and double-differential D * + cross sections are already corrected to the QED Born level with a running fine-structure constant and include both the charm and the beauty contributions to D * + production. The results reported in this section have been published by the H1 and ZEUS Collaborations [5].…”

Section: Combination Of Visible D * + Cross Sectionsmentioning

confidence: 99%

“…51): the main contribution comes from the two separated regions x 1 ≈ 10 −4.5 , x 2 ≈ 10 −1.5 for charm and x 1 ≈ 10 −4.0 , x 2 ≈ 10 −1.2 for beauty; although for charm an additional concentrated region is observed at x 1 ≈ x 2 ≈ 10 −2.0 -10 −1. 5 . The enhancement at medium x comes from a class of O(α 3 s ) corrections, given …”

Section: Kinematics Of Low-p T Regionmentioning

confidence: 99%

“…The physics results presented in detail in Sects. 5-8 were part of the work for the thesis, and later on most of them were published [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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Charm production and QCD analysis at HERA and LHC

Zenaiev

2017

Eur. Phys. J. C

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This review is devoted to the study of charm production in ep and pp collisions. The total set of measurements obtained by the two collaborations H1 and ZEUS from HERA and their combination is outlined, as well as complementary data obtained by the LHCb Collaboration at the LHC. After fitting the parton distribution functions the charm-production cross sections are predicted within perturbative QCD at next-to-leading order using the fixed-flavournumber scheme. Agreement with the data is found. The combined HERA charm data are sensitive to the c-quark mass and enabled its accurate determination. The predictions crucially depend upon the knowledge of the gluon distribution function. It is shown that the shape of the gluon distribution based on the HERA data is considerably improved by adding the measurements from LHCb and applicable down to values x of about 10 −6 , where x is the proton momentum fraction carried by a parton.

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“…The generic electron-proton 5 scattering process, ep → l X , where l is the scattered lepton and X is the hadronic final state, is shown in Fig. 3.…”

Section: Kinematics Of Ep Collisions and Heavy-flavour Structure Funcmentioning

confidence: 99%

Section: Selection Of D + Candidatesmentioning

confidence: 99%

Section: Combination Of Visible D * + Cross Sectionsmentioning

confidence: 99%

Section: Kinematics Of Low-p T Regionmentioning

confidence: 99%

“…The physics results presented in detail in Sects. 5-8 were part of the work for the thesis, and later on most of them were published [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Charm production and QCD analysis at HERA and LHC

Zenaiev

2017

Eur. Phys. J. C

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The Large Hadron–Electron Collider at the HL-LHC

Agostini

Aksakal

Alekhin

et al. 2021

J. Phys. G: Nucl. Part. Phys.

144

129

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The Large Hadron–Electron Collider (LHeC) is designed to move the field of deep inelastic scattering (DIS) to the energy and intensity frontier of particle physics. Exploiting energy-recovery technology, it collides a novel, intense electron beam with a proton or ion beam from the High-Luminosity Large Hadron Collider (HL-LHC). The accelerator and interaction region are designed for concurrent electron–proton and proton–proton operations. This report represents an update to the LHeC’s conceptual design report (CDR), published in 2012. It comprises new results on the parton structure of the proton and heavier nuclei, QCD dynamics, and electroweak and top-quark physics. It is shown how the LHeC will open a new chapter of nuclear particle physics by extending the accessible kinematic range of lepton–nucleus scattering by several orders of magnitude. Due to its enhanced luminosity and large energy and the cleanliness of the final hadronic states, the LHeC has a strong Higgs physics programme and its own discovery potential for new physics. Building on the 2012 CDR, this report contains a detailed updated design for the energy-recovery electron linac (ERL), including a new lattice, magnet and superconducting radio-frequency technology, and further components. Challenges of energy recovery are described, and the lower-energy, high-current, three-turn ERL facility, PERLE at Orsay, is presented, which uses the LHeC characteristics serving as a development facility for the design and operation of the LHeC. An updated detector design is presented corresponding to the acceptance, resolution, and calibration goals that arise from the Higgs and parton-density-function physics programmes. This paper also presents novel results for the Future Circular Collider in electron–hadron (FCC-eh) mode, which utilises the same ERL technology to further extend the reach of DIS to even higher centre-of-mass energies.

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Using hadron-in-jet data in a global analysis of D* fragmentation functions

et al. 2017

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We present a novel global QCD analysis of charged D Ã -meson fragmentation functions at next-toleading order accuracy. This is achieved by making use of the available data for single-inclusive D Ã -meson production in electron-positron annihilation, hadron-hadron collisions, and, for the first time, in-jet fragmentation in proton-proton scattering. It is shown how to include all relevant processes efficiently and without approximations within the Mellin moment technique, specifically for the in-jet fragmentation cross section. The presented technical framework is generic and can be straightforwardly applied to future analyses of fragmentation functions for other hadron species, as soon as more in-jet fragmentation data become available. We choose to work within the zero mass variable flavor number scheme which is applicable for sufficiently high energies and transverse momenta. The obtained optimum set of parton-to-D Ã fragmentation functions is accompanied by Hessian uncertainty sets which allow one to propagate hadronization uncertainties to other processes of interest.

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Combination of differential D∗± cross-section measurements in deep-inelastic ep scattering at HERA

Cited by 5 publications

References 64 publications

Charm production and QCD analysis at HERA and LHC

Charm production and QCD analysis at HERA and LHC

The Large Hadron–Electron Collider at the HL-LHC

Using hadron-in-jet data in a global analysis of D* fragmentation functions

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