Measurement of the Tensor Structure Function<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>b</mml:mi><mml:mn>1</mml:mn></mml:msub></mml:math>of the Deuteron

Airapetian, A.; Акопов, Н.; Akopov, Z.; Amarian, M.; Vv, Ammosov; Andrus, A.; Ec, Aschenauer; Augustyniak, W.; Avakian, R.; Avetissian, A.; Avetissian, E.; Bailey, P.; Balin, D. V.; Baturin,; Beckmann, M.; Belostotski, S.; Bernreuther, S.; Bianchi, N.; Hp, Blok; Böttcher, H.; Borissov, A.; Borysenko, A.; Bouwhuis, M.; Brack, J.; Brüll, A.; Bryzgalov,; Gp, Capitani; Chen, T; Hc, Chiang; Ciullo, G.; Contalbrigo, M.; Pf, Dalpiaz; R, De Leo; Demey, M.; L, De Nardo; E, De Sanctis; Devitsin, E.; Nezza, P. Di; Dreschler, J.; Düren, M.; Ehrenfried, M.; Elalaoui-Moulay, A.; Elbakian, G.; Ellinghaus, F.; Elschenbroich, U.; Fabbri, R.; Fantoni, A.; Fechtchenko, A.; Felawka, L.; Fox, B. D.; Frullani, S.; Gapienko, G.; Gapienko,; Garibaldi, F.; Garrow, K.; Garutti, E.; Gaskell, D.; Gavrilov, G.; Gharibyan,; Graw, G.; Grebeniouk, O.; Lg, Greeniaus; Im, Gregor; Hafidi, K.; Hartig, M.; Hasch, D.; Heesbeen, D.; Henoch, M.; Hertenberger, R.; Wh, Hesselink; Hillenbrand, A.; Hoek, M.; Holler, Y.; Hommez, B.; Iarygin, G.; Ivanilov, A.; Izotov, A.; He, Jackson; Jgoun, A.; Kaiser, R.; Kinney, E.; Kisselev, A.; Kopytin, M.; Korotkov,; Kozlov,; Krauß, Bernhard; Vg, Krivokhijine; Lagamba, L.; Lapikás, L.; Laziev, A.; Lenisa, P.; Liebing, P.; La, Linden-Levy; Lipka, K.; Lorenzon, W.; Lu, Hanqing; J, Lu; Lü, Shaozhe; Ma, Bo-Qiang; Maiheu, B.; Nc, Makins; Mao, Y.; Mariański, B.; Marukyan, H.; Masoli, F.; Mexner,; Meyners, N.; Mikloukho, O.; Ca, Miller; Miyachi, Y.; Muccifora,; Нагайцев, А.; Nappi, E.; Naryshkin, Y.; Nass, A.; Negodaev, M.; Wd, Nowak; Oganessyan, K.; Ohsuga, H.; Pickert, N.; Potashov, S.; Dh, Potterveld; Raithel, Martin; Reggiani, D.; Reimer, P. E.; Reischl, A.; Ar, Reolon; Riedl, C.; Rith, Klaus; Rosner, G.; Rostomyan, A.; Rubáček, L.; Rubin, J.; Ryckbosch, D.; Salomatin, Y.; Sanjiev, I.; Savin, I.; Schäfer, Andreas; Schill, C.; Schnell, G.; Kp, Schüler; Seele, J.; Seidl, R.; Seitz, B.; Shanidze, R.; Shearer, C.; Ta, Shibata; Shutov,; Mc, Simani; Sinram, K.; Stancari, M.; Statera, M.; Steffens, E.; Jj, Steijger; Stenzel, H.; Stewart, J.; Stinzing, F.; Stößlein, U.; Tait, P.; Tanaka, Hiroki; Taroian, S.; Tchuiko, B.; Terkulov, A.; Tkabladze, A.; Trzciński, A.; Tytgat, M.; Vandenbroucke, A.; Pb, van der Nat; Steenhoven, G. van der; Vetterli, M. C.; Vikhrov,; Vincter, M. G.; Vogel, Christian; Vogt, Meike; Volmer, J.; Weiskopf, C.; Wendland, J.; Wilbert, Jürgen; Y, Ye; Z, Ye; Yen, S.; Zihlmann, B.; Żuprański, P.

doi:10.1103/physrevlett.95.242001

Cited by 90 publications

(61 citation statements)

References 26 publications

(19 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It indicates that high-momentum components of the deuteron wave functions play an important role in the standard convolution description for b 1 . TABLE I. Theory-2 calculations of the four tensor-polarized structure functions for kinematics of the HERMES b 1 data [20]. Furthermore, the overall sign of the SD term is opposite to the previous estimate in Ref.…”

Section: Resultsmentioning

confidence: 73%

“…In the unpolarized charged-lepton DIS from the polarized deuteron like the HERMES experiment [20], the cross section with target polarization along the beam direction is written as…”

Section: B Theory 2: Virtual Nucleon Approximationmentioning

confidence: 99%

“…The first measurement of b 1 was reported by the HERMES Collaboration in 2005 [20], and possible tensorpolarized parton distribution functions (PDFs) were extracted from the data [21]. The HERMES data are much larger in magnitude compared to the conventional convolution calculation of Refs.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Tensor-polarized structure function b1 in the standard convolution description of the deuteron

et al. 2017

View full text Add to dashboard Cite

Tensor-polarized structure functions of a spin-1 hadron are additional observables, which do not exist for the spin-1=2 nucleon. They could probe novel aspects of the internal hadron structure. Twist-2 tensor-polarized structure functions are b 1 and b 2 , and they are related by the Callan-Gross-like relation in the Bjorken scaling limit. In this work, we theoretically calculate b 1 in the standard convolution description for the deuteron. Two different theoretical models, a basic convolution description and a virtual nucleon approximation, are used for calculating b 1 , and their results are compared with the HERMES measurement. We found large differences between our theoretical results and the data. Although there is still room to improve by considering higher-twist effects and in the experimental extraction of b 1 from the spin asymmetry A zz , there is a possibility that the large differences require physics beyond the standard deuteron model for their interpretation. Future b 1 studies could shed light on a new field of hadron physics. In particular, detailed experimental studies of b 1 will start soon at the Thomas Jefferson National Accelerator Facility. In addition, there are possibilities to investigate tensorpolarized parton distribution functions and b 1 at Fermi National Accelerator Laboratory and a future electron-ion collider. Therefore, further theoretical studies are needed for understanding the tensor structure of the spin-1 deuteron, including a new mechanism to explain the large differences between the current data and our theoretical results.

show abstract

Section: Resultsmentioning

confidence: 73%

“…In the unpolarized charged-lepton DIS from the polarized deuteron like the HERMES experiment [20], the cross section with target polarization along the beam direction is written as…”

Section: B Theory 2: Virtual Nucleon Approximationmentioning

confidence: 99%

See 1 more Smart Citation

Tensor-polarized structure function b1 in the standard convolution description of the deuteron

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The available data on the deuteron tensor spin structure function [37] provide just the required singlet combination for quarks and indicate that the second moment is more compatible with zero than the first one. This means that collective gluons in the deuteron are suppressed in comparison to the collective sea, and the ExEP explains this fact.…”

Section: Ep For Deuterons and Vector Mesonsmentioning

confidence: 99%

Gravitational form factors and nucleon spin structure

Teryaev¹

2016

Front. Phys.

View full text Add to dashboard Cite

Nucleon scattering by the classical gravitational field is described by the gravitational (energymomentum tensor) form factors (GFFs), which also control the partition of nucleon spin between the total angular momenta of quarks and gluons. The equivalence principle (EP) for spin dynamics results in the identically zero anomalous gravitomagnetic moment, which is the straightforward analog of its electromagnetic counterpart. The extended EP (ExEP) describes its (approximate) validity separately for quarks and gluons and, in turn, results in equal partition of the momentum and total angular momentum. It is violated in quantum electrodynamics and perturbative quantum chromodynamics (QCD), but may be restored in nonperturbative QCD because of confinement and spontaneous chiral symmetry breaking, which is supported by models and lattice QCD calculations. It may, in principle, be checked by extracting the generalized parton distributions from hard exclusive processes. The EP for spin-1 hadrons is also manifested in inclusive processes (deep inelastic scattering and the Drell-Yan process) in sum rules for tensor structure functions and parton distributions. The ExEP may originate in either gravity-proof confinement or in the closeness of the GFF to its asymptotic values in relation to the mediocrity principle. The GFFs in time-like regions reveal some similarity between inflation and annihilation.

show abstract

“…The Hermes collaboration [11] made an initial measurement of the b 1 tensor structure function, with intriguing results but limited precision. This motivated Jefferson Lab experiment E12-13-011 [12] which received an A − physics rating and c 1 approval 1 for 30 days to measure the deuteron tensor structure function b 1 via deep inelastic scattering from a tensor polarized target.…”

Section: Tensor Structurementioning

confidence: 99%