Measurement of the Bc- meson production fraction and asymmetry in 7 and 13 TeV pp collisions

被引：28

作者：

Aaij, R. ^{[28
]}

Beteta, C. Abellan ^{[46
]}

Adeva, B. ^{[43
]}

Adinolfi, M. ^{[50
]}

Aidala, C. A. ^{[77
]}

Ajaltouni, Z. ^{[6
]}

Akar, S. ^{[61
]}

Albicocco, P. ^{[19
]}

Albrecht, J. ^{[11
]}

Alessio, F. ^{[44
]}

Alexander, M. ^{[55
]}

Albero, A. Alfonso ^{[42
]}

Alkhazov, G. ^{[34
]}

Cartelle, P. Alvarez ^{[57
]}

Alves, A. A., Jr. ^{[43
]}

Amato, S. ^{[2
]}

Amerio, S. ^{[24
]}

Amhis, Y. ^{[8
]}

An, L. ^{[18
]}

Anderlini, L. ^{[18
]}

Andreassi, G. ^{[45
]}

Andreotti, M. ^{[17
]}

Andrews, J. E. ^{[62
]}

Archilli, F. ^{[28
]}

d'Argent, P. ^{[13
]}

Romeu, J. Arnau ^{[7
]}

Artamonov, A. ^{[41
]}

Artuso, M. ^{[63
]}

Arzymatov, K. ^{[38
]}

Aslanides, E. ^{[7
]}

Atzeni, M. ^{[46
]}

Audurier, B. ^{[23
]}

Bachmann, S. ^{[13
]}

Back, J. J. ^{[52
]}

Baker, S. ^{[57
]}

Balagura, V. ^{[8
,80
]}

Baldini, W. ^{[17
]}

Baranov, A. ^{[38
]}

Barlow, R. J. ^{[58
]}

Barrand, G. C. ^{[8
]}

Barsuk, S. ^{[8
]}

Barter, W. ^{[58
]}

Bartolini, M. ^{[20
]}

baryshnikov, F. ^{[74
]}

Batozskaya, V. ^{[32
]}

Batsukh, B. ^{[63
]}

Battig, A. ^{[11
]}

Battista, V. ^{[45
]}

Bay, A. ^{[45
]}

Beddow, J. ^{[55
]}

机构：

[1] CBPF, Rio De Janeiro, Brazil

[2] Univ Fed Rio de Janeiro UFRJ, Rio De Janeiro, Brazil

[3] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China

[4] Ihep, Beijing, Peoples R China

[5] Univ Savoie Mont Blanc, Univ Grenoble Alpes, CNRS, IN2P3,LAPP, Annecy, France

[6] Univ Blaise Pascal, Clermont Univ, LPC, CNRS,IN2P3, Clermont Ferrand, France

[7] Aix Marseille Univ, CPPM, CNRS, IN2P3, Marseille, France

[8] Univ Paris Saclay, Univ Paris Sud, LAL, CNRS,IN2P3, Orsay, France

[9] Sorbonne Univ, Paris Diderot Sorbonne Paris Cite, LPNHE, CNRS,IN2P3, Paris, France

[10] Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany

[11] Tech Univ Dortmund, Fak Phys, Dortmund, Germany

[12] Max Planck Inst Kernphys, Heidelberg, Germany

[13] Heidelberg Univ, Phys Inst, Heidelberg, Germany

[14] Univ Coll Dublin, Sch Phys, Dublin, Ireland

[15] INFN, Sez Bari, Bari, Italy

[16] INFN, Sez Bologna, Bologna, Italy

[17] INFN, Sez Ferrara, Ferrara, Italy

[18] INFN, Sez Firenze, Florence, Italy

[19] INFN, Lab Nazl Frascati, Frascati, Italy

[20] INFN, Sez Genova, Genoa, Italy

[21] INFN, Sez Milano Bicocca, Milan, Italy

[22] INFN, Sez Milano, Milan, Italy

[23] INFN, Sez Cagliari, Monserrato, Italy

[24] INFN, Sez Padova, Padua, Italy

[25] INFN, Sez Pisa, Pisa, Italy

[26] INFN, Sez Roma Tor Vergata, Rome, Italy

[27] INFN, Sez Roma La Sapienza, Rome, Italy

[28] Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands

[29] Vrije Univ Amsterdam, Amsterdam, Netherlands

[30] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Krakow, Poland

[31] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Krakow, Poland

[32] Natl Ctr Nucl Res NCBJ, Warsaw, Poland

[33] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania

[34] PNPI, Gatchina, Russia

[35] ITEP, Moscow, Russia

[36] Moscow State Univ SINP MSU, Inst Nucl Phys, Moscow, Russia

[37] Russian Acad Sci, Inst Nucl Res, Moscow, Russia

[38] Yandex Sch Data Anal, Moscow, Russia

[39] Natl Res Univ Higher Sch Econ, Moscow, Russia

[40] RAS, SB, Budker Inst Nucl Phys, Novosibirsk, Russia

[41] IHEP, Protvino, Russia

[42] Univ Barcelona, ICCUB, Barcelona, Spain

[43] Univ Santiago de Compostela, IGFAE, Santiago De Compostela, Spain

[44] European Org Nucl Res CERN, Geneva, Switzerland

[45] Ecole Polytech Fed Lausanne, Inst Phys, Lausanne, Switzerland

[46] Univ Zurich, Phys Inst, Zurich, Switzerland

[47] NSC KIPT, Kharkov, Ukraine

[48] Natl Acad Sci KINR, Inst Nucl Res, Kiev, Ukraine

[49] Univ Birmingham, Birmingham, W Midlands, England

[50] Univ Bristol, HH Wills Phys Lab, Bristol, Avon, England

来源：

PHYSICAL REVIEW D | 2019年 / 100卷 / 11期

关键词：

B-C MESON; DECAYS;

D O I：

10.1103/PhysRevD.100.112006

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The production fraction of the B-c(-) meson with respect to the sum of B- and (B) over bar (0) mesons is measured in both 7 and 13 TeV center-of-mass (c.m.) energy pp collisions produced by the Large Hadron Collider (LHC), using the LHCb detector. The rate, approximately 3.7 per mine, does not change with energy, but shows a transverse momentum dependence. The B-c(-) - B-c(+) production asymmetry is also measured and is consistent with zero within the determined statistical and systematic uncertainties of a few percent.

引用

页数：17

共 57 条

[31] Some of semileptonic and nonleptonic decays of Bc meson in a Bethe-Salpeter relativistic quark model [J].