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Title: Feasibility Studies for Single Transverse-Spin Asymmetry Measurements at a Fixed-Target Experiment Using the LHC Proton and Lead Beams (AFTER@LHC)

Abstract

Measurement of Single Transverse-Spin Asymmetry $$A_N$$ for various quarkonia states and Drell-Yan lepton pairs can shed light on the orbital angular momentum of quarks and gluons, a fundamental ingredient of the spin puzzle of the proton. The AFTER@LHC experiment combines a unique kinematic coverage and large luminosities of the Large Hadron Collider beams to deliver precise measurements, complementary to the knowledge provided by collider experiments such as RHIC. Here, we report on sensitivity studies for $$J/\Psi$$, $$\Upsilon$$ and Drell-Yan $$A_N$$ done using the performance of a LHCb-like and ALICE-like detectors, combined with a polarised hydrogen and $^3$He target. Particularly, such research will provide new insights and knowledge about transverse-momentum-dependent parton distribution functions for quarks and gluons and on twist-3 collinear matrix elements in a proton and a neutron.

Authors:
ORCiD logo [1];  [2];  [3]; ORCiD logo [3];  [4];  [3];  [5];  [6];  [7]
  1. Warsaw Univ. of Technology (Poland). Faculty of Physics
  2. Univ. of Barcelona (Spain). Dept. of Quantitative Physics (FQA) and Inst. of Cosmos Sciences (ICCUB)
  3. Univ. of Paris-Sud, Saclay (France). IPNO and CNRS/IN2P3
  4. Univ. of Paris-Sud, Palaiseau (France). CPhT, Ecole Polytechnique, and CNRS
  5. Lab. of Instrumentation and Experimental Particle Physics (LIP), Lisbon (Portugal)
  6. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States). Theory Center
  7. Univ. of Utrecht (Netherlands). Inst. for Subatomic Physics
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1357274
Alternate Identifier(s):
OSTI ID: 1374993
Report Number(s):
JLAB-THY-17-2401; DOE/OR/23177-4052
Journal ID: ISSN 0177-7963; PII: 1299
Grant/Contract Number:
AC05-06OR23177; FCPPL-Quarkonium4AFTER; TMD@NLO; FPA2013-46570-C2-1-P
Resource Type:
Journal Article: Published Article
Journal Name:
Few-Body Systems
Additional Journal Information:
Journal Volume: 58; Journal Issue: 4; Journal ID: ISSN 0177-7963
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Kikoła, Daniel, Echevarria, Miguel García, Hadjidakis, Cynthia, Lansberg, Jean-Philippe, Lorcé, Cédric, Massacrier, Laure, Quintans, Catarina, Signori, Andrea, and Trzeciak, Barbara. Feasibility Studies for Single Transverse-Spin Asymmetry Measurements at a Fixed-Target Experiment Using the LHC Proton and Lead Beams (AFTER@LHC). United States: N. p., 2017. Web. doi:10.1007/s00601-017-1299-x.
Kikoła, Daniel, Echevarria, Miguel García, Hadjidakis, Cynthia, Lansberg, Jean-Philippe, Lorcé, Cédric, Massacrier, Laure, Quintans, Catarina, Signori, Andrea, & Trzeciak, Barbara. Feasibility Studies for Single Transverse-Spin Asymmetry Measurements at a Fixed-Target Experiment Using the LHC Proton and Lead Beams (AFTER@LHC). United States. doi:10.1007/s00601-017-1299-x.
Kikoła, Daniel, Echevarria, Miguel García, Hadjidakis, Cynthia, Lansberg, Jean-Philippe, Lorcé, Cédric, Massacrier, Laure, Quintans, Catarina, Signori, Andrea, and Trzeciak, Barbara. Wed . "Feasibility Studies for Single Transverse-Spin Asymmetry Measurements at a Fixed-Target Experiment Using the LHC Proton and Lead Beams (AFTER@LHC)". United States. doi:10.1007/s00601-017-1299-x.
@article{osti_1357274,
title = {Feasibility Studies for Single Transverse-Spin Asymmetry Measurements at a Fixed-Target Experiment Using the LHC Proton and Lead Beams (AFTER@LHC)},
author = {Kikoła, Daniel and Echevarria, Miguel García and Hadjidakis, Cynthia and Lansberg, Jean-Philippe and Lorcé, Cédric and Massacrier, Laure and Quintans, Catarina and Signori, Andrea and Trzeciak, Barbara},
abstractNote = {Measurement of Single Transverse-Spin Asymmetry $A_N$ for various quarkonia states and Drell-Yan lepton pairs can shed light on the orbital angular momentum of quarks and gluons, a fundamental ingredient of the spin puzzle of the proton. The AFTER@LHC experiment combines a unique kinematic coverage and large luminosities of the Large Hadron Collider beams to deliver precise measurements, complementary to the knowledge provided by collider experiments such as RHIC. Here, we report on sensitivity studies for $J/\Psi$, $\Upsilon$ and Drell-Yan $A_N$ done using the performance of a LHCb-like and ALICE-like detectors, combined with a polarised hydrogen and $^3$He target. Particularly, such research will provide new insights and knowledge about transverse-momentum-dependent parton distribution functions for quarks and gluons and on twist-3 collinear matrix elements in a proton and a neutron.},
doi = {10.1007/s00601-017-1299-x},
journal = {Few-Body Systems},
number = 4,
volume = 58,
place = {United States},
year = {Wed May 17 00:00:00 EDT 2017},
month = {Wed May 17 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1007/s00601-017-1299-x

Citation Metrics:
Cited by: 4works
Citation information provided by
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  • Measurement of Single Transverse-Spin Asymmetrymore » $$A_N$$ for various quarkonia states and Drell-Yan lepton pairs can shed light on the orbital angular momentum of quarks and gluons, a fundamental ingredient of the spin puzzle of the proton. The AFTER@LHC experiment combines a unique kinematic coverage and large luminosities of the Large Hadron Collider beams to deliver precise measurements, complementary to the knowledge provided by collider experiments such as RHIC. Here, we report on sensitivity studies for $$J/\Psi$$, $$\Upsilon$$ and Drell-Yan $$A_N$$ done using the performance of a LHCb-like and ALICE-like detectors, combined with a polarised hydrogen and $^3$He target. Particularly, such research will provide new insights and knowledge about transverse-momentum-dependent parton distribution functions for quarks and gluons and on twist-3 collinear matrix elements in a proton and a neutron.« less
  • Here we discuss the potential of AFTER@LHC to measure single-transverse-spin asymmetries in open-charm and bottomonium production. With a HERMES-like hydrogen polarised target, such measurements over a year can reach precisions close to the per cent level. This is particularly remarkable since these analyses can probably not be carried out anywhere else.
  • We report on the spin and diffractive physics at a future multi-purpose f xed-target experiment with proton and lead LHC beams extracted by a bent crystal. The LHC multi-TeV beams allow for the most energetic f xed-target experiments ever performed, opening new domains of particle and nuclear physics and complementing that of collider physics, in particular that of RHIC and the EIC projects. The luminosity achievable with AFTER using typical targets would surpass that of RHIC by more than 3 orders of magnitude. The f xed-target mode has the advantage to allow for measurements of single-spin asymmetries with polarized targetmore » as well as of single-diffractive processes in the target region.« less
  • We outline the many physics opportunities offered by a multi-purpose fixed-target experiment using the proton and lead-ion beams of the LHC extracted by a bent crystal. In a proton run with the LHC 7-TeV beam, one can analyze pp, pd and pA collisions at center-of-mass energy {radical}s{sub NN} {approx_equal} 115 GeV and even higher using the Fermi motion of the nucleons in a nuclear target. In a lead run with a 2.76 TeV-per-nucleon beam, {radical}s{sub NN} is as high as 72 GeV. Bent crystals can be used to extract about 5 x 10{sup 8} protons/sec; the integrated luminosity over amore » year reaches 0.5 fb{sup -1} on a typical 1 cm-long target without nuclear species limitation. We emphasize that such an extraction mode does not alter the performance of the collider experiments at the LHC. By instrumenting the target-rapidity region, gluon and heavy-quark distributions of the proton and the neutron can be accessed at large x and even at x larger than unity in the nuclear case. Single diffractive physics and, for the first time, the large negative-xF domain can be accessed. The nuclear target-species versatility provides a unique opportunity to study nuclear matter versus the features of the hot and dense matter formed in heavy-ion collisions, including the formation of the quark-gluon plasma, which can be studied in PbA collisions over the full range of target-rapidity domain with a large variety of nuclei. The polarization of hydrogen and nuclear targets allows an ambitious spin program, including measurements of the QCD lensing effects which underlie the Sivers single-spin asymmetry, the study of transversity distributions and possibly of polarized parton distributions. We also emphasize the potential offered by pA ultra-peripheral collisions where the nucleus target A is used as a coherent photon source, mimicking photoproduction processes in ep collisions. Finally, we note that W and Z bosons can be produced and detected in a fixed-target experiment and in their threshold domain for the first time, providing new ways to probe the partonic content of the proton and the nucleus.« less