Measurement of Jet Production Cross Sections in Deep-inelastic $ep$ Scattering at HERA

The H1 collaboration Collaboration, H1 ; Andreev, Vladimir ; Baghdasaryan, Artem ; et al.
Eur.Phys.J.C 77 (2017) 215, 2017.
Inspire Record 1496981 DOI 10.17182/hepdata.86390

A precision measurement of jet cross sections in neutral current deep-inelastic scattering for photon virtualities $5.5<Q^2<80\,{\rm GeV}^2$ and inelasticities $0.2<y<0.6$ is presented, using data taken with the H1 detector at HERA, corresponding to an integrated luminosity of $290\,{\rm pb}^{-1}$. Double-differential inclusive jet, dijet and trijet cross sections are measured simultaneously and are presented as a function of jet transverse momentum observables and as a function of $Q^2$. Jet cross sections normalised to the inclusive neutral current DIS cross section in the respective $Q^2$-interval are also determined. Previous results of inclusive jet cross sections in the range $150<Q^2<15\,000\,{\rm GeV}^2$ are extended to low transverse jet momenta $5<P_{T}^{\rm jet}<7\,{\rm GeV}$. The data are compared to predictions from perturbative QCD in next-to-leading order in the strong coupling, in approximate next-to-next-to-leading order and in full next-to-next-to-leading order. Using also the recently published H1 jet data at high values of $Q^2$, the strong coupling constant $\alpha_s(M_Z)$ is determined in next-to-leading order.

55 data tables

Inclusive jet cross sections measured as a function of $P_T^{\rm jet}$ for $Q^2$ = 5.5-8.0 GeV$^2$. The correction factors on the theoretical cross sections $c^{\rm had}$ are listed together with their uncertainties. The radiative correction factors $c^{\rm rad}$ are already included in the quoted cross sections. Note that the uncertainties labelled $\delta^{E_{e^\prime}}$ and $\delta^{\theta_{e^\prime}}$ in Table 6 of the paper (arXiv:1611.03421v3) should be swapped. See Table 5 of arXiv:1406.4709v2 for details of the correlation model.

Inclusive jet cross sections measured as a function of $P_T^{\rm jet}$ for $Q^2$ = 8.0-11.0 GeV$^2$. The correction factors on the theoretical cross sections $c^{\rm had}$ are listed together with their uncertainties. The radiative correction factors $c^{\rm rad}$ are already included in the quoted cross sections. Note that the uncertainties labelled $\delta^{E_{e^\prime}}$ and $\delta^{\theta_{e^\prime}}$ in Table 6 of the paper (arXiv:1611.03421v3) should be swapped. See Table 5 of arXiv:1406.4709v2 for details of the correlation model.

Inclusive jet cross sections measured as a function of $P_T^{\rm jet}$ for $Q^2$ = 11.0-16.0 GeV$^2$. The correction factors on the theoretical cross sections $c^{\rm had}$ are listed together with their uncertainties. The radiative correction factors $c^{\rm rad}$ are already included in the quoted cross sections. Note that the uncertainties labelled $\delta^{E_{e^\prime}}$ and $\delta^{\theta_{e^\prime}}$ in Table 6 of the paper (arXiv:1611.03421v3) should be swapped. See Table 5 of arXiv:1406.4709v2 for details of the correlation model.

More…

Measurement of observables sensitive to coherence effects in hadronic Z decays with the OPAL detector at LEP

The OPAL collaboration Fischer, Nadine ; Gieseke, Stefan ; Kluth, Stefan ; et al.
Eur.Phys.J.C 75 (2015) 571, 2015.
Inspire Record 1367303 DOI 10.17182/hepdata.73695

A study of QCD coherence is presented based on a sample of about 397000 $e^+e^-$ hadronic annihilation events collected at $\sqrt{s}=91$ GeV with the OPAL detector at LEP. The study is based on four recently proposed observables that are sensitive to coherence effects in the perturbative regime. The measurement of these observables is presented, along with a comparison with the predictions of different parton shower models. The models include both conventional parton shower models and dipole antenna models. Different ordering variables are used to investigate their influence on the predictions.

14 data tables

The normalized corrected data at the hadron level for the emission angle $\theta_{14}$.

The correlation matrix of the normalized corrected data at the hadron level for the emission angle $\theta_{14}$.

The normalized corrected data at the hadron level for the mass ratio $\rho=M_L^2/M_H^2$.

More…

A Measurement of the strong coupling constant alpha-s in W boson production at the CERN proton - anti-proton collider

Lindgren, M. ; Ikeda, M. ; Joyce, D. ; et al.
Phys.Rev.D 45 (1992) 3038-3041, 1992.
Inspire Record 317667 DOI 10.17182/hepdata.6542

The strong coupling constant αs has been determined from a study of the reaction p¯p→W±X, W→eν at s of 630 GeV in the UA1 experiment at CERN. The measurement is based upon a study of jet production in association with W bosons. The result obtained is αs(MW2)=0.127±0.026(stat)±0.034(syst).

2 data tables

Systematic error not given.

No description provided.


COMPARISON OF THE PARTICLE FLOW IN q anti-q g AND q anti-q gamma EVENTS IN e+ e- ANNIHILATION

The TPC/Two Gamma collaboration Aihara, H. ; Alston-Garnjost, M. ; Avery, R.E. ; et al.
Phys.Rev.Lett. 57 (1986) 945, 1986.
Inspire Record 230224 DOI 10.17182/hepdata.38183

We compare the particle flow in the event plane of three-jet qq¯g (quark-antiquark-gluon) events with the particle flow in radiative annihilation events qq¯γ (quark-antiquark-photon) for similar kinematic configurations. In the angular region between quark and antiquark jet, we find a significant decrease in particle density for qq¯g as compared to qq¯γ. This effect is predicted in QCD as a result of destructive interference between soft-gluon radiation from quark, antiquark, and hard gluon.

2 data tables

No description provided.

No description provided.


ANALYSIS OF HADRON JET BEHAVIOR IN pi- C INTERACTIONS AT 40-GeV/c

Grishin, V.G. ; Didenko, L.A. ; Eliseev, S.M. ; et al.
Sov.J.Nucl.Phys. 38 (1983) 410, 1983.
Inspire Record 179980 DOI 10.17182/hepdata.9639

None

2 data tables

FOR Q(P=3 4)=ALL,1,2,3,4 MASSES OF NUCLEON, 2NUCLEONS, 3NUCLENOS AN SO ON WERE USED TO CALCULATE C.M. ANGLE.

No description provided.


COMPARISON OF THE JET BEHAVIOR OF HADRONS IN pi- p INTERACTIONS AT 40-GeV/c WITH HADRON PRODUCTION IN e+ e- ANNIHILATION

Grishin, V.G. ; Didenko, L.A. ; Kanarek, T. ;
JINR-P1-81-542, 1981.
Inspire Record 168221 DOI 10.17182/hepdata.39140

None

8 data tables

No description provided.

NON DIFFRACTION EVENTS.

No description provided.

More…